ASTM Material Grades for Cast Steel Castings in China Foundry

These ASTM standards and material grades are for cast steel castings. These grades could be made by China foundries.

The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code makes extensive use of the ASTM specifications with slight modifications. For the sake of comparison, the ASME specifications use the preface SA so that SA 216 is related to ASTM A 216/A 216M. However, while ASTM A 216/A 216M could be used for the sake of comparison of grades, ASME SA 216 contained in Section II, must be used when complying with the code.

The American Iron and Steel Institute (AISI) and the Society of Automotive Engineers (SAE) developed a four number wrought alloy designation system, which is used extensively. These steels have been identified in the AISI classification by a numerical index system that is partially descriptive of the composition. The first digit indicates the type to which the steel belongs. A “1” indicates a carbon steel, a “2” indicates a nickel steel, and a digit greater than “2” indicates alloys other than nickel or alloy combinations. For low alloy steels, the second digit indicates the approximate percentage of the predominant alloy element. Usually the last two or three digits indicate the average carbon content in “points”, or hundredths of a percent. Thus, “2340” indicates a nickel steel of approximately 3% nickel (3.25 to 3.75) and 0.40% carbon (0.38 to 0.43). The basic numerals for the various types of AISI steels (including plain-carbon steels) are listed in the table below. The basic numbering system adopted by the Society of Automotive Engineers is quite similar, differing only in minor details. The SAE Handbook should be consulted for comparison.

AISI Classification System

Series Designation Type
10xx Nonresulphurized carbon steel grades
11xx Resulphurized carbon steel grades
12xx Rephosphorized and resulphurized carbon steel grades
13xx Manganese 1.75%
15xx Manganese over 1.00 to 1.65%
23xx Nickel 3.50%
25xx Nickel 5.00%
31xx Nickel 1.25% - Chromium 0.65%
33xx Nickel 3.50% - Chromium 1.55%
40xx Molybdenum 0.25%
41xx Chromium 0.50 or 0.95% - Molybdenum 0.12 or 0.20%
43xx Nickel 1.80% - Chromium 0.50 to 0.80% - Molybdenum 0.25%
44xx Molybdenum 0.40 or 0.53%
46xx Nickel 1.55 or 1.80% - Molybdenum 0.20 or 0.25%
47xx Nickel 1.05% - Chromium 0.45% - Molybdenum 0.20%
48xx Nickel 3.50% - Molybdenum 0.25%
50xx Chromium 0.28 or 0.40%
51xx Chromium 0.80, 0.90, 0.95, 1.00 or 1.05%
5xxxx Carbon 1.00% - Chromium 0.50, 1.00 or 1.45%
61xx Chromium 0.80 or 0.95% - Vanadium 0.10% or 0.15% min.
81xx Nickel 0.30 – Chromium 0.40 - Molybdenum 0.12
86xx Nickel 0.55% - Chromium 0.50 or 0.65% - Molybdenum 0.20%
87xx Nickel 0.55% - Chromium 0.50% - Molybdenum 0.25%
88xx Nickel 0.55% - Chromium 0.50% - Molybdenum 0.35%
92xx Manganese 0.85% - Silicon 2.00%
93xx Nickel 3.25% - Chromium 1.20% - Molybdenum 0.12%
B Denotes boron steel (e.g. 51B60)
BV Denotes boron-vanadium steel (e.g. TS 43BV12 or TS 43BV14)
L Denotes leaded steel (e.g. 10L18)

Needless to say, this list representing as it does, a standardization and simplification of thousands of alloy-steel compositions, is a very valuable aid to the specification and choice of alloy steels for various applications. Many of these steels were developed for specific applications, and their continual satisfactory performance has resulted

in a considerable degree of standardization of application among these compositions. These designations can be ordered in castings through the use of ASTM A 148/A 148M, A 915/A 915M, or A 958 but care must be used to select a grade with compatible mechanical properties. Also the wrought composition must be modified, especially the silicon and manganese content to allow for casting.

Below is a list of carbon and alloy cast steel specifications, with summary details on the following pages. Note that the values given in the summary of the specifications are stated with either U.S. Conventional Units (USCS) or Metric (SI) units, and are to be regarded separately. Units given in brackets are SI units. The values stated in each system are not exact equivalents (soft conversion); therefore, each system must be used independently of the other. Combining values from the two systems, by using conversion equations (hard conversion), may result in nonconformance with the specification. Also note that the values in the table are given in a minimum over maximum format. This means that if the value is a minimum it will be listed in the upper portion of the specification’s table row and in the lower portion of the row if it is a maximum value. Finally, note that tables and their footnotes may be split across two or more pages.

ASTM A 27 /A 27M – 08 STEEL CASTINGS, CARBON, FOR GENERAL APPLICATION

This specification covers carbon steel castings for general applications that require up to 70 ksi (485 Mpa) minimum tensile -strength.

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given)
GradeA Heat Treatment Tensile Strength Yield Strength ElongC Red A SPECIFIED RESIDUAL ELEMENTS (maximum percent)
and UNS ksi MPa ksi MPa % % CB MnB P S Si Ni Cr Mo Cu Total max % E
N-1 N-2(J03500) U-60-30 [415-205] (J02500) 60-30 [415-205] (J03000) 65-35 [450-240] (J03001) 70-36 [485-250] (J03501) 70-40 [485-275] (J02501)D A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT 60 60 65 70 70 415 415 450 485 485 30 30 35 36 40 205 205 240 250 275 22 24 24 22 22 30 35 35 30 30 0.25 0.35 0.25 0.30 0.30 0.35 0.25 0.75 0.60 0.75 0.60 0.70 0.70 1.20 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.50 0.50 0.50 0.50 0.50 0.50 0.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00

A Specify Class 1 or Class 2 in addition to grade designation (see 9.2)
B For each reduction of 0.01% carbon below the maximum specified, an increase of 0.04% manganese above the maximum specified will be permitted to a maximum of 1.40% for grades 70-40 [485-275]and 1.00% for the other grades C When ICI test bars are used in tensile testing as provided for in this specification, the gage length to reduced section diameter ratio shall be 4-1.
D Grade 70-40 [485-275] may be used to meet the requirement of Grade 70-36 [485-250] , when agreed upon between the manufacturer and the purchaser.
E Total content of residual elements. Supplementary requirement, not required unless stipulated by customer.

ASTM A 148 /A 148M – 08 STEEL CASTINGS, HIGH STRENGTH, FOR STRUCTURAL PURPOSES

This specification covers carbon steel and alloy steel castings that are to be subjected to higher mechanical stresses than those covered in Specification A 27/A 27M.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat Treatment Tensile Strength Yield Strength Elong %A Red A % Other Tests A Impact P S
and UNS ksi MPa ksi MPa
80-40 [550-275] (D50400) 80-50 [550-345] (D50500) 90-60 [620-415] (D50600) 105-85 [725-585] (D50850) 115-95 [795-655] (D50950) 130-115 [895-795] (D51150) 135-125 [930-860] (D51250) 150-135 [1035-930] (D51350) 160-145 [1105-1000] (D51450) 165-150 [1140-1035] (D51500) 165-150L [1140-1035L] (D51501) 210-180 [1450-1240] (D51800) 210-180L [1450-1240L] B (D51801) 260-210 [1795-1450] B (D52100) 260-210L [1795-1450L] B (D52101) A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT A, N, NT, or QT 80 80 90 105 115 130 135 150 160 165 165 210 210 260 260 550 550 620 725 795 895 930 1035 1105 1140 1140 1450 1450 1795 1795 40 50 60 85 95 115 125 135 145 150 150 180 180 210 210 275 345 415 585 655 795 860 930 1000 1035 1035 1240 1240 1450 1450 18 22 20 17 14 11 9 7 6 5 5 4 4 3 3 30 35 40 35 30 25 22 18 12 20 20 15 15 6 6 20 ft-lb [27 J] 15 ft-lb [20 J] 6 ft-lb [8 J] 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.020 0.020 0.020 0.020 0.020 0.020 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.020 0.020 0.020 0.020 0.020 0.020

A When ICI test bars are used in tensile testing as provided for in this specification, the gage length to reduced section diameter ratio shall be 4-1. B These grades must be charpy tested as prescribed in Section 9, and with minimum values as shown in Table 3.

ASTM A 216 /A 216M – 07STEEL CASTINGS, CARBON, SUITABLE FOR FUSION WELDING, FOR HIGH TEMPERATURE SERVICE

This specification covers carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat TreatmentA Tensile Strength Yield Strength Elong% Red A % C Mn P S Si SPECIFIED RESIDUAL ELEMENTS (maximum percent) E
ksi MPa Ksi F Mpa G Ni Cr Mo Cu V Total Content max %
WCA J02502 A, N, NT 60 85 415 585 30 205 24 35 0.25B 0.70B 0.04 0.045 0.60 0.50 0.50 0.20 0.30 0.03 1.00
WCB J03002 A, N, NT 70 95 485 655 36 250 22 35 0.30C 1.00C 0.04 0.045 0.60 0.50 0.50 0.20 0.30 0.03 1.00
WCC J02503 A, N, NT 70 95 485 655 40 275 22 35 0.25D 1.20D 0.04 0.045 0.60 0.50 0.50 0.20 0.30 0.03 1.00

A Quench and temper may only be applied if supplemental requirement S15 is specified
B For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.04% manganese above the specified maximum will be permitted up to a maximum of 1.10%
C For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.04% manganese above the specified maximum will be permitted up to a maximum of 1.28%
D For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.04% manganese above the specified maximum will be permitted up to a maximum of 1.40%
E Not applicable when Supplementary Requirement S11 is specified
F Determine by either 0.2% offset method or 0.55 extension-under-load method.
G When ICI test bars are used in tensile testing as provided for in Specification A 703/A 703M, the gage length to reduced section diameter ratio shall be 4-1.

ASTM A 217 /A 217M – 07STEEL CASTINGS, MARTENSITIC STAINLESS AND ALLOY, FOR PRESSURE-CONTAINING PARTS, SUITABLE FOR HIGH-TEMPERATURE SERVICE

This specification covers martensitic stainless steel and alloy steel castings for values, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service.

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength A Elong Red A C Mn P S Si Ni Cr Mo Cb N V SPECIFIED RESIDUAL ELEMENTS (maximum percent)
ksi MPa ksi MPa % B % Al Cu Ni Cr Ti W V Zr Total Content max.
WC1 J12524 NT 65 90 450 620 35 240 24 35 0.25 0.50 0.80 0.04 0.045 0.60 0.45 0.65 0.50 0.50 0.35 0.10 1.00
WC4 70 485 40 275 20 35 0.05 0.50 0.70 0.50 0.45
NT
J12082 95 655 0.20 0.80 0.04 0.045 0.60 1.10 0.80 0.65 0.50 0.10 0.60

WC5 J22000 NT 70 95 485 655 40 275 20 35 0.05 0.20 0.40 0.70 0.04 0.045 0.60 0.60 1.00 0.50 0.90 0.90 1.20 0.50 0.10 0.60
WC6 70 485 40 275 20 35 0.05 0.50 1.00 0.45
NT
J12072 95 655 0.20 0.80 0.04 0.045 0.60 1.50 0.65 0.50 0.50 0.10 1.00

WC9 J21890 NT 70 95 485 655 40 275 20 35 0.05 0.18 0.40 0.70 0.04 0.045 0.60 2.00 2.75 0.90 1.20 0.50 0.50 0.10 1.00
GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength A Elong Red A C Mn P S Si Ni Cr Mo Cb N V SPECIFIED RESIDUAL ELEMENTS (maximum percent)
ksi MPa ksi MPa % B % Al Cu Ni Cr Ti W V Zr Total Content max.
WC11 80 550 50 345 18 45 0.15 0.50 0.30 1.00 0.45
NT
J11872 105 725 0.21 0.80 0.020 0.015 0.60 1.50 0.65 0.01 0.35 0.50 0.03 1.00

C5 J42045 NT 90 115 620 795 60 415 18 35 0.20 0.40 0.70 0.04 0.045 0.75 4.00 6.50 0.45 0.65 0.50 0.50 0.10 1.00
C12 90 620 60 415 18 35 0.35 8.00 0.90
NT
J82090 115 795 0.20 0.65 0.04 0.045 1.00 10.00 1.20 0.50 0.50 0.10 1.00

C12A J84090 NT 85 110 585 760 60 415 18 45 0.08 0.12 0.30 0.60 0.030 0.010 0.20 0.50 0.40 8.0 9.5 0.85 1.05 0.060 0.10 0.030 0.070 0.18 0.25 0.02 0.01 0.01
CA15 90 620 65 450 18 30 11.5
NT
J91156 115 795 0.15 1.00 0.040 0.040 1.50 1.00 14.0 0.50

A Determine by either 0.2% offset method or 0.5% extension-under-load method.
B When ICI test bars are used in tensile testing as provided for in Specification A 703/A 703M, the gage length to reduced section diameter ratio shall be 4-1.

ASTM A 352 /A 352M – 06STEEL CASTINGS, FERRITIC AND MARTENSITIC, FOR PRESSURE-CONTAINING PARTS, SUITABLE FOR LOW-TEMPERATURE SERVICE

This specification covers steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat Treatment Tensile StrengthC Yield StrengthD ElongE Red. Area Impact Tests C,F SPECIFIED RESIDUAL ELEMENTS (maximum percent) B
and UNS ksi MPa ksi MPa % % AverageA Single C Si Mn P S Ni Cr Mo Cu V Ni Cr Mo Cu V Total Content Max
LCA J02504 LCB A J03003 LCC J02505 LC1 J12522 LC2 J22500 LC2-1 J42215 LC3 J31550 LC4 J41500 LC9 J31300 CA6NM J91540 NT or QT NT or QT NT or QT NT or QT NT or QT NT or QT NT or QT NT or QT QT NT 60 85 65 90 70 95 65 90 70 95 105 130 70 95 70 95 85 110 135 415 585 450 620 485 655 450 620 485 655 725 895 485 655 485 655 585 760 930 30 35 40 35 40 80 40 40 75 80 205 240 275 240 275 550 275 275 515 550 24 24 22 24 24 18 24 24 20 15 35 35 35 35 35 30 35 35 30 35 13(-25) [18(-32)] 13(-50) [18(-46)] 15(-50) [20(-46)] 13(-75) [18(-59)] 15(-100) [20(-73)] 30(-100) [41(-73)] 15(-150) [20(-101)] 15(-175) [20(-115)] 20(-320) [27(-196)] 20(-100) [27(-73)] 10[14] 10[14] 10[16] 10[14] 12[16] 25[34] 12[16] 12[16] 15[20] 15[20] 0.25 A 0.30 0.25 A 0.25 0.25 0.22 0.15 0.15 0.13 0.06 0.60 0.60 0.60 0.60 0.60 0.50 0.60 0.60 0.45 1.00 0.70 A 1.00 1.20 A 0.50 0.80 0.50 0.80 0.55 0.75 0.50 0.80 0.50 0.80 0.90 1.00 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.03 2.00 3.00 2.50 3.50 3.00 4.00 4.00 5.00 8.50 10.0 3.5 4.5 1.35 1.85 0.50 11.5 14.0 0.20 0.45 0.65 0.30 0.60 0.20 0.4 1.0 0.30 0.30 0.03 0.50 0.50 0.50 0.50 0.50 0.50 0.20 0.20 0.30 0.30 0.03 0.03 0.03 1.00 1.00 1.00

A For each reduction of 0.01% carbon below the maximum specified, an increase of 0.04% manganese above the maximum specified will be permitted up to a maximum of 1.10% for LCA), 1.28%doe LCB), and 1.40% for LCC).

B Specified Residual Elements-The total content of these elements is 1.00% maximum. See 1.2

Determine by either 0.2% offset method or 0.5% extension-under-load method.

When ICI test bars are used in tensile testing as provided for in Specification A 703/A 703M, the gage length to reduced section diameter ratio shall be 4-1.

See Appendix X1

ASTM A 356 /A 356M – 07 STEEL CASTINGS, CARBON, LOW ALLOY AND STAINLESS STEEL, HEAVY WALLED FOR STEAM TURBINES

This specification covers one grade of martensitic stainless steel and several grades of ferritic steel castings for cylinders (shells), value chests, throttle valves, and other heavy-walled castings for steam turbine applications.

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % A (maximum percent unless range given)
Grade Heat Treatment Tensile Strength Yield Strength Elong % Red A % C Mn Si P S Mo Cr Ni V Cb N Al Ti Zr
and UNS Ksi MPa Ksi MPa
1 J03502 NT 70 485 36 250 20 35 0.35 B 0.70 B 0.60 0.035 0.030 ..... ..... ..... ..... ..... ..... ..... ..... .....
2 J12523 NT 65 450 35 240 22 35 0.25 B 0.70 B 0.60 0.035 0.030 0.45 0.65 ..... ..... ..... ..... ..... ..... ..... .....
5 J12540 NT 70 485 40 275 22 35 0.25 B 0.70 B 0.60 0.035 0.030 0.40 0.60 0.40 0.70 ..... ..... ..... ..... ..... ..... .....
6 J12073 NT 70 485 45 310 22 35 0.20 0.50 0.80 0.60 0.035 0.030 0.45 0.65 1.00 1.50 ..... ..... ..... ..... ..... ..... .....
8 J12073 NT 80 550 50 345 18 45 0.20 0.50 0.90 0.20 0.60 0.035 0.030 0.90 1.20 1.00 1.50 ..... 0.05 0.15 ..... ..... ..... ..... .....
9 J21610 NT 85 585 60 415 15 45 0.20 0.50 0.90 0.20 0.60 0.035 0.030 0.90 1.20 1.00 1.50 ..... 0.20 0.35 ..... ..... ..... ..... .....
10 J22090 NT 85 585 55 380 20 35 0.20 0.50 0.80 0.60 0.035 0.030 0.90 1.20 2.00 2.75 ..... ..... ..... ..... ..... ..... .....
12A C J80490 NT 85 585 60 415 20 ..... 0.08 0.12 0.30 0.60 0.20 0.50 0.30 0.010 0.85 1.05 8.0 9.5 0.40 0.18 0.25 0.060 0.10 0.030 0.070 0.02 0.01 0.01
CA6NM J91540 NT 110 760 80 550 15 35 0.06 1.00 1.00 0.040 0.030 0.4 1.0 11.5 14.0 3.5 4.5 ..... ..... ..... ..... ..... .....

A Where ellipses appear in this table, there is no requirement.
B For each 0.01% reduction in carbon below the maximum specified, an increase of 0.04% points of manganese over the maximum specified for that element may be permitted up to 1.00%
C The designation of Grade 12, formerly covered by this specification has been changed to Grade 12A.

ASTM A 389 /A 389M – 08STEEL CASTINGS, ALLOY, SPECIALLY HEAT-TREATED, FOR PRESSURE-CONTAINING PARTS, SUITABLE FOR HIGH-TEMPERATURE SERVICE

This specification covers alloy steel castings, which have been subjected to special heat treatment, for valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature service.

A Determine by either 0.2% offset method or 0.5% extension-under-load method.
B When ICI test bars are used in tensile testing as provided for in Specification A 703/A 703M, the gage length to reduced section diameter ratio shall be 4-1.

ASTM A 487 /A 487M – 07STEEL CASTINGS, SUITABLE FOR PRESSURE SERVICE

This specification covers low-alloy steels, and martenistic stainless steels in the normalized and tempered, or quenched and tempered condition suitable for pressure-containing parts. The weldability of the classes in the specification varies from readily weldable to weldable only with adequate precautions, and the weldability of each class should be considered prior to assembly by fusion welding.

A A = air, L = liquid B Minimum temperature unless range is specified C Double austenitize D Double temper with the final temper at a lower temperature than the intermediate temper E Air cool to below 200F [95C] after first temper F Intermediate G Final H Minimum ksi, unless range is given I Test methods and definitions A 370, Table 3a does not apply to CA6NM – the conversion given is based on CA6NM test coupons (for example, see ASTM STP 756) J Proprietary steel composition K For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.40% manganese above the specified maximum will be permitted up to a maximum of 2.30%

ASTM A 597 – 99 CAST TOOL STEEL

This specification covers tool steel compositions for usable shapes cast by pouring directly into suitable molds and for master heats for remelting and casting.

GRADE CHEMICAL COMPOSITION, %
(maximum percent unless range given)
Grade and UNS C Mn P S Si Ni Cr Mo V Co W
CA-2 0.95 4.75 0.90 0.20
T90102 1.05 0.75 0.03 0.03 1.50 5.50 1.40 0.50A
CD-2 1.40 11.00 0.70 0.04 0.70
T90402 1.60 1.00 0.03 0.03 1.50 13.00 1.20 1.00A 1.00A
CD-5 1.35 0.40 11.00 0.70 0.35 2.50
T90405 1.60 0.75 0.03 0.03 1.50 0.60A 13.00 1.20 0.55 3.50
CS-5 0.50 0.60 1.75 0.20
T91905 0.65 1.00 0.03 0.03 2.25 0.35 0.80 0.35
CM-2 0.78 3.75 4.50 1.25 5.50
T11302 0.88 0.75 0.03 0.03 1.00 0.25 4.50 5.50 2.20 .25 6.75
CS-7 0.45 0.40 0.60 3.00 1.20
T41907 0.55 0.80 0.03 0.03 1.00 3.50 1.60
CH-12 0.30 4.75 1.25 0.20 1.00
T90812 0.40 0.75 0.03 0.03 1.50 5.75 1.75 0.50 1.70
CH-13 0.30 4.75 1.25 0.75
T90813 0.42 0.75 0.03 0.03 1.50 5.75 1.75 1.20
CO-1 0.85 1.00 0.40 0.40
T91501 1.00 3.00 0.03 0.03 1.50 1.00 0.30 0.60

A Optional element – tool steels have found satisfactory application, either with or without the element present; if desired they should be specified with order

ASTM A 732 /A 732M – 05CASTINGS, INVESTMENT, CARBON AND LOW ALLOY, FOR GENERAL APPLICATION, AND COBALT ALLOY FOR HIGH STRENGTH AT ELEVATED TEMPERATURES

This specification covers carbon and low-alloy steel castings made by the investment casting process.

GRADE & MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
HEAT TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Tests Stress RuptureB C Mn P S Si Ni Cr Mo V Co W Fe B SPECIFIED RESIDUAL ELEMENTS (maximum percent)
ksi MPa Ksi MPa Cu Ni Cr Mo+ W W Total Content
1A J02002 AC 60 414 40 276 24 0.15 0.25 0.20 0.60 0.04 0.045 0.20 1.00 0.50 0.50 0.35 0.25 1.00
2A J03011 A 65 448 45 310 25 0.25 0.35 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.50 0.35 0.10 1.00
2Q J03011 QTD 85 586 60 414 10 0.25 0.35 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.50 0.35 0.10 1.00
3A J04002 A 75 517 48 331 25 0.35 0.45 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.50 0.35 0.10 1.00
GRADE & MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
HEAT TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Tests Stress RuptureB C Mn P S Si Ni Cr Mo V Co W Fe B SPECIFIED RESIDUAL ELEMENTS (maximum percent)
ksi MPa Ksi MPa Cu Ni Cr Mo+ W W Total Content
3Q J04002 QT 100 689 90 621 10 0.35 0.45 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.50 0.35 0.10 1.00
4A A 90 621 50 345 20 0.45 0.55 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.10 0.60
4Q QT 125 862 100 689 5 0.45 0.55 0.70 1.00 0.04 0.045 0.20 1.00 0.50 0.10 0.60
5N J13052 NTE 85 586 55 379 22 0.30 0.70 1.00 0.04 0.045 0.20 0.80 0.05 0.15 0.50 0.50 0.35 0.25 1.00
6N J13512 NT 90 621 60 414 20 0.35 1.35 1.75 0.04 0.045 0.20 0.80 0.25 0.55 0.50 0.50 0.35 0.25 1.00
7Q J13045 QT 150 1030 115 793 7 0.25 0.35 0.40 0.70 0.04 0.045 0.20 0.80 0.80 1.10 0.15 0.25 0.50 0.50 0.10 0.60
8Q J14049 QT 180 1241 145 1000 5 0.35 0.45 0.70 1.00 0.04 0.045 0.20 0.80 0.80 1.10 0.15 0.25 0.50 0.50 0.10 1.00
9Q J23055 QT 150 1030 115 793 7 0.25 0.35 0.40 0.70 0.04 0.045 0.20 0.80 1.65 2.00 0.70 0.90 0.20 0.30 0.50 0.10 0.60
10Q J24054 QT 180 1241 145 1000 5 0.35 0.45 0.70 1.00 0.04 0.045 0.20 0.80 1.65 2.00 0.70 0.90 0.20 0.30 0.50 0.35 0.10 1.00
11Q J12094 QT 120 827 100 689 10 0.15 0.25 0.40 0.70 0.04 0.045 0.20 0.80 1.65 2.00 0.20 0.30 0.50 0.10 1.00
12Q J15048 QT 190 1310 170 1172 4 0.45 0.55 0.65 0.95 0.04 0.045 0.20 0.80 0.80 1.10 0.15 0.50 0.50 0.10 1.00
13Q J12048 QT 105 724 85 586 10 0.15 0.25 0.65 0.95 0.04 0.045 0.20 0.80 0.40 0.70 0.40 0.70 0.15 0.25 0.50 0.10 1.00
14Q J13051 QT 150 1030 115 793 7 0.25 0.35 0.65 0.95 0.04 0.045 0.20 0.80 0.40 0.70 0.40 0.70 0.15 0.25 0.50 0.10 0.60
15AF J19966 A HRB 100 max. 0.95 1.10 0.25 0.55 0.04 0.045 0.20 0.80 1.30 1.60 0.50 0.50 0.10 0.60
21 As cast 52A 360A 10 23.0 [160] 0.20 0.30 1.00 0.040 0.040 1.00 1.7 3.8 25 29 5 6 remainder 3.00 0.007
31 As cast 55A 380A 10 30.0 [205] 0.45 0.55 1.00 0.040 0.040 1.00 9.5 11.5 24.5 26.5 remainder 7.0 8.0 2.00 0.005 0.015

A Test at elevated temperature, 1500F [820C]
B Stress rupture test at 1500F [820C], stress units in ksi [MPa], the minimum rupture life is 15 hours with a minimum elongation in 4D of 5%
C Annealed.
D Quenched and tempered.
E Normalized and tempered
F Hardness Rockwell B, 100Max.

ASTM A 757 /A 757M – 04STEEL CASTINGS, FERRITIC AND MARTENISTIC FOR PRESSURE-CONTAINING AND OTHER APPLICATIONS, FOR LOW-TEMPERATURE SERVICE

This specification covers carbon and low-alloy steel castings for pressure-containing and other applications intended primarily for petroleum and gas pipelines in areas subject to low-ambient temperatures. Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. All classes are weldable under proper conditions. Hardenability of some grades may limit useable section size.

GRADE & MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
HEAT TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Tensile Strength Yield Strength Elong Red Other TestsA SPECIFIED RESIDUAL ELEMENTS Maximum %
And UNS Heat Treatment Ksi MPa Ksi MPa % A % ImpactB C Mn P S Si Ni Cr Mo V Cu Ni Cr Mo W Total Content % E
A1Q J03002 QT 65 450 35 240 24 35 13(-50) [17(-46)] 0.30 1.00 0.025 0.25 0.60 0.30 0.50 0.50 0.40 0.25 1.00
A2Q J02503 QT 70 485 40 275 22 35 15(-50) [20(-46)] 0.25D 1.20D 0.025 0.25 0.60 0.30 0.50 0.50 0.40 0.25 1.00
B2N, B2Q J22501 NT or QT 70 485 40 275 24 35 15(-100) [20(-73)] 0.25 0.50 0.80 0.025 0.25 0.60 2.0 3.0 0.30 0.50 0.40 0.25 1.00
B3N, B3Q J31500 NT or QT 70 485 40 275 24 35 15(-150) [20(-101)] 0.15 0.50 0.80 0.025 0.25 0.60 3.0 4.0 0.30 0.50 0.40 0.25 1.00
B4N, B4Q J41501 NT or QT 70 485 40 275 24 35 15(-175) [20(-115)] 0.15 0.50 0.80 0.025 0.25 0.60 4.0 5.0 0.30 0.50 0.40 0.25 1.00
C1Q J12582 QT 1100F 75 515 55 380 22 35 15(-50) [20(-46)] 0.25 1.20 0.025 0.25 0.60 1.5 2.0 0.15 0.30 0.30 0.50 0.40 1.00
D1N1, D1Q1 J22092 NT or QT 85 115 585 795 55 380 20 35 C 0.20 0.40 0.80 0.025 0.25 0.60 2.0 2.75 0.90 1.20 0.03 0.50 0.50 0.10 1.00
D1N2, D1Q2 J22092 NT or QT 95 125 655 860 75 515 18 35 C 0.20 0.40 0.80 0.025 0.25 0.60 2.0 2.75 0.90 1.20 0.03 0.50 0.50 0.10 1.00
D1N3, D1Q3 J22092 NT or QT 105 135 725 930 85 585 15 30 C 0.20 0.40 0.80 0.025 0.25 0.60 2.0 2.75 0.90 1.20 0.03 0.50 0.50 0.10 1.00
E1Q J42220 QT 1100F 90 620 65 450 22 40 30(-100) [41(-73)] 0.22 0.50 0.80 0.025 0.25 0.60 2.5 3.5 1.35 1.85 0.35 0.60 0.03 0.50 0.70
E2N1, E2Q1 NT or QT 90 120 620 825 70 485 18 35 30(-100) [41(-73)] 0.20 0.40 0.70 0.020 0.020 0.60 2.75 3.90 1.50 2.0 0.40 0.60 0.30 0.50 0.10 0.70
E2N2, E2Q2 NT or QT 105 135 725 930 85 585 15 30 20(-100) [27(-73)] 0.20 0.40 0.70 0.020 0.020 0.60 2.75 3.90 1.50 2.0 0.40 0.60 0.30 0.50 0.10 0.70
E2N3, E2Q3 NT QT 115 145 795 1000 100 690 13 30 15(-100) [20(-73)] 0.20 0.40 0.70 0.020 0.020 0.60 2.75 3.90 1.50 2.0 0.40 0.60 0.30 0.50 0.10 0.70
E3N J91550 NT 110 760 80 550 15 35 20(-100) [27(-73)] 0.06 1.00 0.030 0.030 1.00 3.5 4.5 11.5 14.0 0.40 1.0 0.50 0.10 0.50

A Refer to the original specification for additional information on toughness requirements and effective section size information
B See original specification for full details – units are in ft-lbs @ (F) and [J @ (C)]
C Requirements shall be subject to agreements between the manufacturer and the purchaser
D For each 0.01% carbon below the maximum specified, an increase of 0.04% manganese over the maximum specified will be permitted up to 1.40%
E Total residuals includes phosphorus and sulfur.

ASTM A 915 /A 915M – 08 STEEL CASTINGS, CARBON, AND ALLOY, CHEMICAL REQUIREMENTS SIMILAR TO STANDARD WROUGHT GRADES

This specification covers carbon and low-alloy steel castings having chemical analyses similar to that of the standard wrought grades.

GRADE & HEAT CHEMICAL COMPOSITION, %
TREATMENT (maximum percent unless range given)
Grade and UNS Heat Treatment C Mn P S Si Ni Cr Mo
SC 1020 J02003 As cast, A, N, NT, or QT 0.18 0.23 0.40 0.80 0.040 0.040 0.30 0.60
SC 1025 J02508 As cast, A, N, NT, or QT 0.22 0.28 0.40 0.80 0.040 0.040 0.30 0.60
SC 1030 J03012 A, N, NT, or QT 0.28 0.34 0.50 0.90 0.040 0.040 0.30 0.60
SC 1040 J04003 A, N, NT, or QT 0.37 0.44 0.50 0.90 0.040 0.040 0.30 0.60
SC 1045 J04502 A, N, NT, or QT 0.43 0.50 0.50 0.90 0.040 0.040 0.30 0.60
SC 4130 J13502 A, N, NT, or QT 0.28 0.33 0.40 0.80 0.035 0.040 0.30 0.60 0.80 1.10 0.15 0.25
SC 4140 J14045 A, N, NT, or QT 0.38 0.43 0.70 1.10 0.035 0.040 0.30 0.60 0.80 1.10 0.15 0.25
SC 4330 J23259 A, N, NT, or QT 0.28 0.33 0.60 0.90 0.035 0.040 0.30 0.60 1.65 2.00 0.70 0.90 0.20 0.30
SC 4340 J24053 A, N, NT, or QT 0.38 0.43 0.60 0.90 0.035 0.040 0.30 0.60 1.65 2.00 0.70 0.90 0.20 0.30
SC 8620 J12095 A, N, NT, or QT 0.18 0.23 0.60 1.00 0.035 0.040 0.30 0.60 0.40 0.70 0.40 0.60 0.15 0.25
SC 8625 J12595 A, N, NT, or QT 0.23 0.28 0.60 1.00 0.035 0.040 0.30 0.60 0.40 0.70 0.40 0.60 0.15 0.25
SC 8630 J13095 A, N, NT, or QT 0.28 0.33 0.60 1.00 0.035 0.040 0.30 0.60 0.40 0.70 0.40 0.60 0.15 0.25

ASTM A 958 – 06STEEL CASTINGS, CARBON, AND ALLOY, WITH TENSILE REQUIREMENTS, CHEMICAL REQUIREMENTS SIMILAR TO STANDARD WROUGHT GRADES

This specification covers carbon and low-alloy steel castings having chemical analyses similar to that of the standard wrought grades.

A X denotes that the properties may be achieved by at least one of the heat treatments referenced in 5. The effect of section thickness should be considered in making greade selections. The heat treatment requirements do not imply that all section thicknesses will be through hardened. B These grades are likely to significantly exceed the minimum strength levels; therefore, problems may be experienced when trying to produce castings to low hardness values C Tensile requirements for the different classes given in the table below

TENSILE REQUIREMENTS
Class 65/35 70/36 80/40 80/50 90/60 105/85 115/95 130/115 135/125 150/135 160/145 165/150 210/180
Tensile (ksi) 65 70 80 80 90 105 115 130 135 150 160 165 210
Tensile [MPa] 450 485 550 550 620 725 795 895 930 1035 1105 1140 1450
Yield (ksi) 35 36 40 50 60 85 95 115 125 135 145 150 180
Yield [MPa] 240 250 275 345 415 585 655 795 860 930 1000 1035 1240
Elong. (%) 24 22 18 22 18 17 14 11 9 7 6 5 4
Red. A (%) 35 30 30 35 35 35 30 25 22 18 12 10 8

FEDERAL QQ-S-681F STEEL CASTINGS

This specification covers mild-to-medium-strength carbon steel castings for general application as described in ASTM A 27 and high-strength steel castings for structural purposes as described in ASTM A 148.

Canceled May 20, 1985 – use ASTM A 27 and ASTM A 148

ISO 3755 CAST CARBON STEELS FOR GENERAL ENGINEERING

This International Standard specifies requirements for eight grades of heat-treated cast carbon steels for general engineering purposes. Four of the grades have a restricted chemical composition to ensure uniform weldability.

GRADE & HEAT MECHANICAL PROPERTIESA CHEMICAL COMPOSITIONH, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat TreatmentB Tensile Strength Yield StrengthD ElongG % Red A % Other TestsG Impact (J) CI Mn P S Si SPECIFIED RESIDUAL ELEMENTS Maximum %
ksi MPa ksi Mpa NiJ CrJ MoJ Cu V Total Content %J
200-400 400 200 25 25 30
200-400WC 550 400 200 25 25 45 0.035 0.035
550 0.25 1.00 0.035 0.035 0.60 0.40 0.35 0.15 0.40 0.05 1.00
230-450 450 230 22 22 25
230-450WC 600 450 230 22 22 45 0.035 0.035
270-480 600 480 270E 18 18 22 0.25 1.20 0.035 0.035 0.60 0.40 0.35 0.15 0.40 0.05 1.00
270-480WC 630 480 270E 18 18 22 0.035 0.035
340-550 630 550 340F 15 15 20 0.25 1.20 0.035 0.035 0.60 0.40 0.35 0.15 0.40 0.05 1.00
340-550WC 700 550 340F 15 15 20 0.035 0.035
700 0.25 1.50 0.035 0.035 0.60 0.40 0.35 0.15 0.40 0.05 1.00

A See original specification for additional details on mechanical properties B The type of heat-treatment is left to the discretion of the manufacturer, unless specifically agreed upon at the time of ordering C The W-grades restrict the chemical composition and may be ordered to ensure uniform weldability D If measurable, the upper yield stress, otherwise the 0.2% proof stress E The casting will have an upper yield stress of [260 Mpa] and a tensile strength of [500-650 MPa] in sections from [28 mm] up to [40 mm] F The casting will have an upper yield stress of [300 Mpa] and a tensile strength of [570-720 MPa] in sections from [28 mm] up to [40 mm] G By choice, according to the order H The choice of chemical composition in the non-weldable grades shall be left to the discretion of the manufacturer I For each 0.01% reduction of carbon below 0.25%, an increase of 0.04% manganese above the maximum specified will be permitted, to a maximum of 1.20% for grade 200-400W and to 1.40% for grade 270-480W J Maximum content of residual elements, the sum of which shall not exceed 1.00%

ISO 4991 STEEL CASTINGS FOR PRESSURE PURPOSES

This International Standard covers steel castings used for pressure purposes. It includes materials which are used for the manufacture of components subject to pressure vessel codes (see ISO/R831, ISO 2694 and ISO 5730) and for other pressure containing components not subject to codal requirements

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES AT ROOM TEMPERATURE 3) (minimum unless range given) CHEMICAL COMPOSITION, % (m/m)1),2) (maximum percent unless range given)
Grade and UNS Heat Treatment5) Re 6) Min N/mm2 Rm N/mm2 A Min % Z7) Min % KV7), 4) Min J KV3), 4) C Si Mn P S Cr Mo Ni V Nb
at °C Min J
Unalloyed steels
C23-45A 240 450 22 35 27
600 0.25 0.60 1.20 0.035 0.035
C23-45AH 240 150 22 35 27
300 0.25 0.60 1.20 0.035 0.035
C23-45B 240 450 22 35 45 1.00
600 0.20 0.60 1.60 0.035 0.035
C23-45BH 240 450 22 35 45 1.00
600 0.20 0.60 1.60 0.035 0.035
C23-45BL 240 450 22 -40 27 1.00
C26-52 C26-52H C26-52L 280 280 280 300 52010) 670 52010) 670 52010) 670 18 18 18 30 30 35 35 -35 27 0.20 0.258),9) 0.258),9) 0.258) 0.60 0.60 0.60 0.60 1.60 1.208),9) 1.208),9) 1.208) 0.030 0.035 0.035 0.03 0.030 0.035 0.035 0.03
Alloyed ferritic and martensitic steels
C28H 250 450 600 21 25 25 0.15 0.23 0.30 0.60 0.50 1.00 0.035 0.035 0.30 0.40 0.60
C31L 370 550 700 16 30 -45 27 0.29 0.30 0.60 0.50 0.80 0.030 0.030 0.90 1.20 0.15 1.30
C32H 290 490 640 18 35 27 0.10 0.2010) 0.30 0.60 0.50 0.80 0.035 0.035 1.00 1.50 0.45 0.65
C33H 320 500 650 17 30 13 0.10 0.17 0.30 0.60 0.40 0.70 0.035 0.035 0.30 0.60 0.40 0.60 0.40 0.22 0.32
C34AH 280 510 660 18 35 25 0.08 0.15 0.30 0.60 0.50 0.80 0.035 0.035 2.00 2.50 0.90 1.20
C34BH 390 600 750 18 35 40 0.13 0.20 0.30 0.60 0.50 0.80 0.035 0.035 2.00 2.50 0.90 1.20
C34BL 390 600 750 18 50 27 0.20 0.30 0.60 0.50 0.80 0.030 0.030 2.00 2.50 0.90 1.20
C35BH 420 590 740 15 35 24 0.13 0.20 0.30 0.60 0.50 0.80 0.035 0.035 1.20 1.6011) 0.90 1.20 12) 0.15 0.35
C37H 420 630 780 16 35 25 0.12 0.19 0.80 0.50 0.80 0.035 0.035 4.00 6.00 0.45 0.65
C38H 420 630 780 16 35 20 0.10 0.17 0.80 0.50 0.80 0.035 0.035 8.00 10.0 1.00 1.30
C39CH 450 620 770 14 30 20 0.10 0.17 0.80 1.00 0.035 0.035 11.5 13.5 0.50 1.00
C39CNiH 360 540 690 18 35 35 0.05 0.10 0.80 0.40 0.80 0.035 0.035 11.5 13.0 0.20 0.50 0.80 1.80
GRADE & HEAT TREATMENT MECHANICAL PROPERTIES AT ROOM TEMPERATURE 3) (minimum unless range given) CHEMICAL COMPOSITION, % (m/m)1),2) (maximum percent unless range given)
Grade and UNS Heat Treatment5) Re 6) Min N/mm2 Rm N/mm2 A Min % Z7) Min % KV7), 4) Min J KV3), 4) C Si Mn P S Cr Mo Ni V Nb
at °C Min J
C39NiH 550 750 900 15 35 45 0.08 1.00 1.50 0.035 0.035 11.5 13.5 1.00 3.50 5.00
C39NiL 550 750 15 35 -80 27 11.5 3.50
900 0.08 1.00 1.50 0.030 0.030 13.5 1.00 5.00
C40H 540 740 15 20 2113) 0.20 0.20 0.50 11.3 1.00 0.70 0.25
880 0.26 0.40 0.70 0.035 0.035 12.3 1.20 1.00 0.35
C43L 300 460 610 20 -70 27 0.14 0.30 0.60 0.50 0.80 0.030 0.030 3.00 4.00
C43C1L 380 520 670 20 -35 27 0.24 0.30 0.60 0.80 1.20 0.030 0.030 0.15 0.30 1.50 2.00
C43E2aL 450 620 800 16 -80 27 0.22 0.60 0.40 0.80 0.030 0.030 1.35 2.00 0.35 0.60 2.50 3.50
C43E2bL 655 800 950 13 -60 27 0.22 0.60 0.40 0.80 0.030 0.030 1.50 2.00 0.35 0.60 2.75 3.90
Austenitic stainless steels

C46 210 440 640 30 14) 0.03 2.00 2.00 0.045 0.035 17.0 19.0 9.0 12.0
C47 210 440 640 30 14) 0.07 2.00 2.00 0.045 0.035 18.0 21.0 8.0 11.0
C47H 230 470 670 30 14) 0.04 0.10 2.00 2.00 0.045 0.035 18.0 21.0 8.0 12.0
C47L 210 440 30 -19515) 45 17.0. 9.0
640 0.07 2.00 2.00 0.045 0.035 20.0 12.0
C50 210 440 640 25 14) 0.08 2.00 2.00 0.045 0.035 18.0 21.0 9.0 12.0 8x%C 1.0
C57 210 440 620 30 14) 0.03 2.00 2.00 0.045 0.035 17.0 21.0 2.0 2.5 9.0 13.0
C60 210 440 640 30 14) 0.07 2.00 2.00 0.045 0.035 17.0 21.0 2.0 2.5 9.0 13.0
C60H 230 470 670 30 14) 0.04 0.10 2.00 2.00 0.045 0.035 17.0 21.0 2.0 2.5 9.0 13.0
C60Nb 210 440 640 25 14) 0.08 2.00 2.00 0.045 0.035 17.0 21.0 2.0 2.5 9.0 13.0 8x%C 1.0
C61LC 210 440 640 30 14) 0.03 2.00 2.00 0.045 0.035 17.0 21.0 2.5 3.0 9.0 13.0
C61 210 440 640 30 14) 0.07 2.00 2.00 0.045 0.035 17.0 21.0 2.5 3.0 9.0 13.0

Elements not quoted in this table shall not be intentionally added without the purchaser’s agreement, other than for the purpose of finishing the heat treatment. For unalloyed steels, if not otherwise agreed, the following maximum values, in percentage, are applicable: Cr/0.40, Mo/0.15, Ni/0.40, V/0.03, Cu/0.40, (Cr+Mo+Ni+V Cu)/100

The permissible deviatons for the results of check-analysis on test blocks shall be as specified in ISO 4990.

Re: yield strength (see footnote 5); Rm: tensile strength; A percentage elongation after fracture on original gage length Lo=5.65 √So (Where So is the original cross-sectional area); Z:reduction of area; KV: ISO V-notch impact strength.

The given minimum values apply for the average of three individual test results. One of the individual values may be below the specified minimum average value, provided it is not less than 70% of that value.

Refer to specifications for heat treatment requirements

The values of Re shall be regarded as complied with if, in the case of non-austentic steels, the upper yield stress (ReH), the total 0.5% total elongation proof stress(Rt0.5) or the 0.2% proof test (Rp0.2) satisfy the specified values.

The minimum values for either Z or KV apply. Unless otherwise specified, the choice is lift to the manufacturer. However, the purchaser shall note that some national or ISO codes require the testing of impact specimens.

For each 0.0.01 % (m/m) C below the maximum carbon content, an increase of 0.04 % (m/m) Mn will be permitted up to a maximum manganese content of 1.40 % (m/m).

For certain applications and upon agreement at the time of the enquiry and order, this grade of steel can be supplied with a maximum carbon content of 0.30% (m/m) and a maximum manganese content of 0.90% (m/m).

If the minimum yield strength Re is met, tensile strength (Rm) values down to 500 N/mm2 should be regarded as acceptable.

For castings with thin sections, a minimum value of 1.00 % (m/m) Cr may be agreed upon.

Depending on the wall thickness, a nickel content of less than 1.00% (m/m) is permitted.

This type of steel is usually applied only at temperatures above 525° C.

Austenitic steels normally have a high toughness because of their structure.

Valid for an impact value of 45J. Normally, this value is also to be expected for the room temperature grade. If, however, the low temperature grade is ordered, the value has to be verified by testing.

ISO 9477 HIGH STRENGTH CAST STEELS FOR GENERAL ENGINEERING AND STRUCTURAL PURPOSES

This International Standard specifies requirements for four grades of heat-treated cast carbon and alloy steels for general engineering and structural purposes.

GRADE & HEAT MECHANICAL PROPERTIESA CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentB Tensile Strength Yield Strength Elong % Red A % Other Tests Impact (J) P S Si
and UNS ksi MPa ksi MPa
410-620 620 410 16 40 20
770 0.035 0.035 0.60
540-720 720 540 14 35 20
870 0.035 0.035 0.60
620-820 820 620 11 30 18
970 0.035 0.035 0.60
840-1030 1030 840 7 22 15
1180 0.035 0.035 0.60

A See original specification for additional details on mechanical properties B The type of heat-treatment is left to the discretion of the manufacturer, unless specifically agreed upon at the time of ordering

ISO 13521 AUSTENITIC MANGANESE STEEL CASTINGS

This International Standard specifies austenitic manganese cast steels for wear resistant service. The grades covered by this International Standard will experience maximum service life in applications where the surface of the castings is subject to impact.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Testsc C Mn P S Si Ni Cr Mo
ksi MPa ksi MPa
GX120MnMo7-1 ST & WQ 1.05 1.35 6.0 8.0 0.060 0.045 0.30 0.90 0.90 1.20
GX110MnMo12-1 GX100Mn13A GX120Mn13A ST & WQ ST & WQ ST & WQ 0.75 1.35 0.90 1.05 1.05 1.35 11.0 14.0 11.0 14.0 11.0 14.0 0.060 0.060 0.060 0.045 0.045 0.045 0.30 0.90 0.30 0.90 0.30 0.90 0.90 1.20
GX120MnCr13-2 ST & WQ 1.05 1.35 11.0 14.0 0.060 0.045 0.30 0.90 1.50 2.50
GX120MnCr13-3 & WQ 1.05 1.35 11.0 14.0 0.060 0.045 0.30 0.90 3.0 4.0
GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Testsc C Mn P S Si Ni Cr Mo
ksi MPa ksi MPa
GX120Mn17A GX90MnMo14 GX120MnCr17-2 ST & WQ B as cast ST & WQ 1.05 1.35 0.70 1.00 1.05 1.35 16.0 19.0 13.0 15.0 16.0 19.0 0.060 0.070 0.060 0.045 0.045 0.045 0.30 0.90 0.30 0.60 0.30 0.90 1.50 2.50 1.00 1.80

A These grades are sometimes used for non-magnetic service B For castings with thicknesses less than [45 mm] and containing less than 0.8% carbon, heat treatment is not required C Bend test, hardness test, and microstructure shall be performed when agreed upon between the purchaser and the manufacturer – see original specification for more details

ISO 14737 CAST CARBON AND LOW ALLOY STEELS FOR GENERAL USE

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES AT ROOM TEMPERATURE (minimum unless range given) CHEMICAL COMPOSITION, % (m/m) (maximum percent unless range given)
Grade and UNS Heat Treatment Thickness t mm Tensile test Impact Test KV Min J C Si Mn P S Cr Mo Ni V Nb
Rp0.2 min MPa Rm MPa A Min %
GS200 +N 100 200 400 550 25 45 0.18 0.60 1.20 0.030 0.025 0.30A 0.12 A 0.40 A 0.03 A 0.30 A
GS230 +N 100 230 450 600 22 45 0.22 0.60 1.20 0.030 0.025 0.30 A 0.12 A 0.40 A 0.03 A 0.30 A
GS270 +N 100 270 480 630 18 27 0.24 0.60 1.30 0.030 0.025 0.30 A 0.12 A 0.40 A 0.03 A 0.30 A
GS340 +N 100 340 550 700 15 20 0.30 0.60 1.50 0.030 0.025 0.30 A 0.12 A 0.40 A 0.03 A 0.30 A
G20Mn5 +N 30 300 480 620 20 50 0.17 0.23 0.60 1.00 1.60 0.030 0.020B 0.30 0.15 0.80 0.05 0.30
+QT 100 300 500 650 22 60 0.17 0.23 0.60 1.00 1.60 0.030 0.020B 0.30 0.15 0.80 0.05 0.30
G28Mn6 +N 250 260 520 670 18 31 0.25 0.32 0.60 1.20 1.80 0.030 0.025 0.30 0.15 0.40 0.05 0.30
+QT1 100 450 600 750 14 35 0.25 0.32 0.60 1.20 1.80 0.030 0.025 0.30 0.15 0.40 0.05 0.30
+QT2 50 550 700 850 10 31 0.25 0.32 0.60 1.20 1.80 0.030 0.025 0.30 0.15 0.40 0.05 0.30
G28MnMo6 +QT1 50 500 700 850 12 35 0.25 0.32 0.60 1.20 1.60 0.025 0.025 0.30 0.20 0.40 0.40 0.05 0.30
+QT1 100 480 670 830 10 31 0.25 0.32 0.60 1.20 1.60 0.025 0.025 0.30 0.20 0.40 0.40 0.05 0.30
+QT2 100 590 850 1000 8 27 0.25 0.32 0.60 1.20 1.60 0.025 0.025 0.30 0.20 0.40 0.40 0.05 0.30
G20Mo5 +QT2 100 245 440 590 22 27 0.15 0.23 0.60 0.50 1.00 0.025 0.020 B 0.30 0.40 0.60 0.40 0.05 0.30
G10MnMoV6-3 +NT 50 380 500 650 22 60 0.12 0.60 1.20 1.80 0.025 0.020 0.30 0.20 0.40 0.40 0.05 0.10 0.30

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES AT ROOM TEMPERATURE (minimum unless range given) CHEMICAL COMPOSITION, % (m/m) (maximum percent unless range given)
Grade and UNS Heat Treatment Thickness t mm Tensile test Impact Test KV Min J C Si Mn P S Cr Mo Ni V Nb
Rp0.2 min MPa Rm MPa A Min %
+QT1 150 250 330 620 770 10 16 0.28 0.35 0.60 0.50 0.80 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
+QT2 100 350 800 950 10 18 0.28 0.35 0.60 0.50 0.80 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
G42CrMo4 NT 100 300 700 850 15 10 0.38 0.45 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
+QT1 100 600 780 930 12 31 0.38 0.45 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
+QT1 100 150 550 700 850 10 27 0.38 0.45 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
+QT1 150 250 350 650 800 10 16 0.38 0.45 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
+QT2 100 700 850 1000 10 18 0.38 0.45 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
G50CrMo4 +QT 100 750 900 1050 10 18 0.46 0.53 0.60 0.60 1.00 0.025 0.020 B 0.80 1.20 0.15 0.25 0.40 0.05 0.30
G30CrMoV6-4 +QT1 100 700 850 1000 14 45 0.27 0.34 0.60 0.60 1.00 0.025 0.020 B 1.30 1.70 0.30 0.50 0.40 0.05 0.15 0.30
+QT1 100 150 550 750 900 12 27 0.27 0.34 0.60 0.60 1.00 0.025 0.020 B 1.30 1.70 0.30 0.50 0.40 0.05 0.15 0.30
+QT1 150 250 350 650 800 12 20 0.27 0.34 0.60 0.60 1.00 0.025 0.020 B 1.30 1.70 0.30 0.50 0.40 0.05 0.15 0.30
+QT2 100 750 900 1100 12 31 0.27 0.34 0.60 0.60 1.00 0.025 0.020 B 1.30 1.70 0.30 0.50 0.40 0.05 0.15 0.30
G35CrNiMo6-6 +N 150 550 800 950 12 31 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
+N 150 250 500 750 900 12 31 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
+QT1 100 700 850 1000 12 45 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
+QT1 100 150 650 800 950 12 35 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
+QT1 150 250 650 800 950 12 30 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
+QT2 100 800 900 1050 10 35 0.32 0.38 0.60 0.60 1.00 0.025 0.020 B 1.40 1.70 0.15 0.35 1.40 1.70 0.05 0.30
G30NiCrMo7-3 +NT 100 550 760 900 12 10 0.28 0.33 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
+QT1 100 690 930 1100 10 25 0.28 0.33 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
+QT2 100 795 1030 1200 8 25 0.28 0.33 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
G40NiCrMo7-3 +NT 100 585 860 1100 10 10 0.38 0.43 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
+QT1 100 760 1000 1140 8 25 0.38 0.43 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
+QT2 100 795 1030 1200 8 25 0.38 0.43 0.60 0.60 0.90 0.035 0.030 0.70 0.90 0.20 0.30 1.65 2.00 0.05 0.30
GRADE & HEAT TREATMENT MECHANICAL PROPERTIES AT ROOM TEMPERATURE (minimum unless range given) CHEMICAL COMPOSITION, % (m/m) (maximum percent unless range given)
Grade and UNS Heat Treatment Thickness t mm Tensile test Impact Test KV Min J C Si Mn P S Cr Mo Ni V Nb
Rp0.2 min MPa Rm MPa A Min %
G32NiCrMo8-5-4 +QT1 100 700 850 1000 16 50 0.28 0.35 0.60 0.60 1.00 0.020 0.015 1.00 1.40 0.30 0.50 1.60 2.10 0.05 0.30
+QT1 100 250 650 820 970 14 35 0.28 0.35 0.60 0.60 1.00 0.020 0.015 1.00 1.40 0.30 0.50 1.60 2.10 0.05 0.30
+QT2 100 980 1050 1200 10 35 0.28 0.35 0.60 0.60 1.00 0.020 0.015 1.00 1.40 0.30 0.50 1.60 2.10 0.05 0.30

A Cr+Mo+Ni+V+Cu max. 100%
B For castings of ruling thickness<28 mm, S≤0.030% is permitted.C Cooling in liquid

MIL-C-24707 /1 CASTINGS, FERROUS, FOR MACHINERY AND STRUCTURAL APPLICATIONS

This specification covers steel castings for machinery and structural applications below 775 F where impact strength may be a consideration.

PREVIOUS SPECIFICATION REPLACEMENT SPECIFICATION FEDERAL GRADE EQUIVALENT GRADE
MIL-S-15083B (grade) MIL-C-24707/1 ASTM specification (grade) QQ-S-681F ASTM specification (grade) MIL-C-24707/1 ASTM specification (grade)
(CW) (B) (65-35) (70-36) (80-40) (80-50) (90-60) (100-70) (105-85) (120-95) (150-125) A 757 (A1Q) or A 216 (WCA) A 757 (A1Q) or A 216 (WCA) A 757 (A1Q) or A 216 (WCB) A 757 (A2Q) or A 216 (WCB, WCC) A 757 (A2Q) or A 487 (2 class A, B, C) A 757 (C1Q) or A 487 (2 class A, B, C) A 757 (E1Q) or A 487 (4 class A) A 757 (E2N1/E2Q1) A 757 (E2N2/E2Q2) or A 487 (4 class B) A 757 (E2N3/E2Q3) or A 487 (14 class A) Special application only A 27 (N-1) A 27 (N-2) A 27 (U60-30) A 27 (60-30) A 27 (65-35) A 27 (70-36) A 27 (70-40) A 148 (80-40) A 148 (80-50) A 148 (90-60) A 148 (105-85) A 148 (120-95) A 757 (A1Q) or A 216 (WCA) or A 217 (WC1) A 757 (A1Q) or A 216 (WCA) or A 217 (WC1) A 757 (A1Q) or A 216 (WCB) or A 217 (WC1) A 757 (A1Q) or A 216 (WCB) or A 217 (WC1) A 757 (A1Q) or A 216 (WCB) or A 217 (WC1) A 757 (A2Q) or A 216 (WCB, WCC) A 757 (A2Q) or A 216 (WCC) A 757 (A2Q) or A 487 (2 class A, B, C) A 757 (C1Q) or A 487 (2 class A, B, C) A 757 (E1Q) or A 487 (4 class A) A 757 (E2N2/E2Q2) or A 487 (4 class B) A 757 (E2N3/E2Q3) or A 487 (14 class A)

Additional notes for specification are as follows; see original military specification booklet for further information, including Quality Assurance Provisions. The specified residual elements shall be determined for carbon steels. When no impact requirement is given, there shall be a requirement of 20 ft-lbs @ 10 F; except for deck applications, which shall meet a requirement of 20 ft-lbs @ -20 F. When specified, the stress relieving temperature shall be 50 F [30 C] but not more than 100 F [60 C] below the tempering temperature; mechanical properties shall be determined after the stress relief heat treatment.

MIL-C-24707 /2 CASTINGS, FOR PRESSURE CONTAINING PARTS SUITABLE FOR HIGH TEMPERATURE SERVICE

This specification covers alloy steel castings for machinery, structural, and pressure containing parts for high temperature applications.

Additional notes for specification are as follows; see original military specification booklet for further information, including Quality Assurance Provisions. When specified, the stress relieving temperature shall be 50 F [30 C] but not more than 100 F [60 C] below the tempering temperature; mechanical properties shall be determined after the stress relief heat treatment.

MIL-S-870B STEEL CASTINGS, MOLYBDENUM ALLOY

Canceled January 27, 1989 – use MIL-C-24707/2, grade WC1

MIL-S-15083B(NAVY) STEEL CASTINGS

Canceled January 27, 1989 – use MIL-C-24707/1, ASTM A757, A216, A487

MIL-S-15464B(SHIPS) STEEL ALLOY, CHROMIUM-MOLYBDENUM; CASTINGS

Canceled January 27, 1989 – use MIL-C-24707/2, ASTM A217, A389

MIL-S-23008D(SH) STEEL CASTINGS, ALLOY, HIGH YIELD STRENGTH (HY-80 AND HY-100)

Canceled June 5, 2003

MIL-S-46052A(MR) STEEL CASTINGS, HIGH STRENGTH, LOW ALLOY This specification covers high strength, low alloy, steel castings.

Canceled May 31, 1983 – use ASTM A 148 / A148M

SAE J435c AUTOMOTIVE STEEL CASTING

These specifications cover steel castings used in the automotive and allied industries (last revised Oct 2002).

GRADE & HEAT CHEMICAL COMPOSITION, % MECHANICAL PROPERTIES
TREATMENT (maximum percent unless range given) (minimum unless range given)
New Old C Mn Si P S Tensile Strength Yield Strength Elong % Red A % Other Tests Hardness (BHN)
Grade Grade ksi MPa Ksi MPa
0000 415 450 585 690 550 620 725 830 1035 1205 0022 0025 0030 0050A 0050B 080 090 0105 0120 0150 0175 0.12 0.22 0.25 0.30 0.40 0.50 0.40 0.50 0.50 0.90 0.75A 0.70A 0.50 0.90 0.50 0.90 0.60 0.80 0.80 0.80 0.80 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 60 65 85 100 80 90 105 120 150 175 415 450 585 690 550 620 725 830 1035 1205 30 35 45 70 50 60 85 95 125 145 205 240 310 485 345 415 585 655 860 999.7 22 24 16 10 22 20 17 14 9 6 30 35 24 15 35 40 35 30 22 21 187 187 131 187 170 229 207 255 163 207 187 241 217 248 248 311 311 363 363 415

A For each reduction of 0.01% carbon below the maximum specified, an increase of 0.04% manganese above the maximum specified will be permitted to a maximum of 1% manganese

SUMMARY OF MATERIAL SPECIFICATIONS FOR HIGH ALLOY CAST STEELS
The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code makes extensive use of ASTM specifications with slight modifications. For the sake of comparison the ASME specifications use the preface SA so that SA 351 is related to ASTM A 351/A 351M. However, while ASTM A 351/A 351M could be used for comparison of grades, the ASME SA 351 contained in Section II must be used when complying with the code.

Cast stainless steels are most often specified on the basis of composition using the alloy designation system adopted by the Alloy Casting Institute (ACI). These ACI alloy designations, e.g. CF-8M, have been adopted by ASTM and are preferred for cast alloy over the corresponding wrought steel designation of the American Iron and Steel Institute (AISI). The reason for this is that the grades intentionally have different compositions than their wrought counterparts.

The ranges of iron, chromium, and nickel for the cast alloy compositions most widely used are identified with a letter which is part of the ACI grade designation. The initial letter of the grade designation, C or H, indicates whether the alloy is intended primarily for aqueous corrosion service (C) or elevated temperature, i.e. heat-resistant, service (H). The second letter of the ACI designation denotes the nominal chromium-nickel type. As the nickel content of the grade increases, the letter in the ACI designation increases from A (lowest) to Z (highest). Numerals following the letters relate to the maximum carbon content of the corrosion-resistant (C) alloys. When used with heat resistant grades (H), the numerals are the midpoint of a 0.10 carbon range. If additional alloying elements are included in the grade, they are denoted by the addition of a letter to the ACI designation. Thus, CF-8M is an alloy for corrosion resistant service of the 19% Cr and 9% Ni type with a maximum carbon content of 0.08% and which contains molybdenum.

The CF grade alloys constitute the most technologically important and highest tonnage segment of corrosion-resistant casting production. These 19Cr-9Ni alloys are the cast counterparts of the 18Cr-8Ni or AISI 300 series wrought stainless steels. In general, the cast and wrought alloys possess equivalent resistance to corrosive media and they are frequently used in conjunction with each other.

Important differences do exist, however, between the cast CF grade alloys and their wrought AISI counterparts. Most significant among these is the difference in alloy microstructure in the end-use condition. The CF grade cast alloys are duplex ferrite-in-austenite and usually contain from 5 to 40% ferrite, depending on the particular alloy, whereas their wrought counterparts are fully austenitic. The ferrite in cast stainless with duplex structures is magnetic, a point that is often confusing when cast stainless steels are compared to their wrought counterparts by checking their attraction to a magnet. This difference in microstructures is attributable to the fact that the chemical compositions of the cast and wrought alloys are different by intent. Ferrite is present by intent in cast CF grade stainless steels for three reasons: to provide strength, to improve weldability, and to maximize resistance to corrosion in specific environments.

Below is a list of high alloy cast steel specifications, with summary details on the following pages. Note that the values given in the summary of the specifications are stated with either U.S. Conventional Units (USCS) or Metric (SI) units, and are to be regarded separately. Units given in brackets are SI units. The values stated in each system are not exact equivalents (soft conversion); therefore, each system must be used independently of the other. Combining values from the two systems, by using conversion equations (hard conversion), may result in nonconformance with the specification. Also note that the values in the table are given in a minimum over maximum format. This means that if the value is a minimum it will be listed in the upper portion of the specification’s table row and in the lower portion of the row if it is a maximum value. Finally, note that tables and their footnotes may be split across two or more pages.

ASTM A 128 /A128M – 07Steel Castings, Austenitic Manganese

ASTM A 297 /A 297M – 08Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application

ASTM A 351 /A 351M – 06Castings, Austenitic, Austenitic-Ferritic, For Pressure-Containing Parts

ASTM A 447 /A 447M – 07Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

ASTM A 494 /A 494M – 08Castings, Nickel and Nickel Alloy

ASTM A 560 /A 560M – 05Castings, Chromium-Nickel Alloy

ASTM A 743 /A 743M – 06Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

ASTM A 744 /A 744M – 06Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

ASTM A 747 /A 747M – 07Steel Castings, Stainless, Precipitation Hardening

ASTM A 890 /A 890M – 07Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

ASTM A 990 – 08Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service

ISO 11972 Corrosion-resistant cast steels for general applications

ISO DIS 11973 Heat-resistant cast steels for general purposes

ISO 12725 Nickel and nickel alloy castings

ISO 19960 Cast Steels and alloys with special physical properties.

MIL-C-24707 /3Castings, Ferrous, Corrosion-Resistant, Austenitic, Chromium-Nickel

MIL-C-24707 /6Castings, Ferrous, Chromium Steel, for Pressure-Containing Parts Suitable for High-Temperature

ASTM A 128 /A128M – 07 STEEL CASTINGS, AUSTENITIC MANGANESEThis specification covers Hadfield austenitic manganese steel castings and alloy modifications.

GRADE & HEAT TREATMENTA CHEMICAL COMPOSITION, % (maximum percent unless range given)
GradeB and UNS Heat Treatment C Mn P S Si Ni Cr Mo
A Q 1.05 11.0 min
J91109 1.35 0.07 1.00
B-1 Q 0.9 11.5
J91119 1.05 14.0 0.07 1.00
B-2 Q 1.05 11.5
J91129 1.2 14.0 0.07 1.00
B-3 Q 1.12 11.5
J91139 1.28 14.0 0.07 1.00
B-4 Q 1.2 11.5
J91149 1.35 14.0 0.07 1.00
C Q 1.05 11.5 1.5
J91309 1.35 14.0 0.07 1.00 2.5
D Q 0.7 11.5 3.0
J91459 1.3 14.0 0.07 1.00 4.0
E-1 Q 0.7 11.5 0.9
J91249 1.3 14.0 0.07 1.00 1.2
E-2 Q 1.05 11.5 1.8
J91339 1.45 14.0 0.07 1.00 2.1
F Q 1.05 6.0 0.9
J91340 1.35 8.0 0.07 1.00 1.2

A Section size precludes the use of all grades and the producer should be consulted as to grades practically obtainable for a particular design required. Final selection shall be by mutual agreement between manufacturer and purchaser. B Unless otherwise specified, Grade A will be supplied.

ASTM A 297 /A 297M – 08 STEEL CASTINGS, IRON-CHROMIUM AND IRON-CHROMIUM-NICKEL, HEAT RESISTANT, FOR GENERAL APPLICATION

This specification covers iron-chromium and iron-chromium-nickel alloy castings for heat-resistant service. The grades covered by this specification are general purpose alloys and no attempt has been made to include heat-resisting alloys used for special production application.

GRADE MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
(minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongB % C Mn P S Si Ni Cr MoC
and UNS ksi MPa ksi MPa
HF 70 485 35 240 25 0.20 8.00 18.0
J92603 0.40 2.00 0.04 0.04 2.00 12.0 23.0 0.50
HH 75 515 35 240 10 0.20 11.0 24.0
J93503 0.50 2.00 0.04 0.04 2.00 14.0 28.0 0.50
HI 70 485 35 240 10 0.20 14.0 26.0
J94003 0.50 2.00 0.04 0.04 2.00 18.0 30.0 0.50
HK 65 450 35 240 10 0.20 18.0 24.0
J94224 0.60 2.00 0.04 0.04 2.00 22.0 28.0 0.50
HE 85 585 40 275 9 0.20 8.00 26.0
J93403 0.50 2.00 0.04 0.04 2.00 11.0 30.0 0.50

GRADE MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
(minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongB % C Mn P S Si Ni Cr MoC
and UNS ksi MPa ksi MPa
HT 65 450 4 0.35 33.0 15.0
N08605 0.75 2.00 0.04 0.04 2.50 37.0 19.0 0.50
HU 65 450 4 0.35 37.0 17.0
N08004 0.75 2.00 0.04 0.04 2.50 41.0 21.0 0.50
HW 60 415 0.35 58.0 10.0
N08001 0.75 2.00 0.04 0.04 2.50 62.0 14.0 0.50
HX 60 415 0.35 64.0 15.0
N06006 0.75 2.00 0.04 0.04 2.50 68.0 19.0 0.50
HC 55 380 26.0
J92605 0.50 1.00 0.04 0.04 2.00 4.00 30.0 0.50
HD 75 515 35 240 8 4.00 26.0
J93005 0.50 1.50 0.04 0.04 2.00 7.00 30.0 0.50
HL 65 450 35 240 10 0.20 18.0 28.0
N08604 0.60 2.00 0.04 0.04 2.00 22.0 32.0 0.50
HN 63 435 8 0.20 23.0 19.0
J94213 0.60 2.00 0.04 0.04 2.00 27.0 23.0 0.50
HP 62.5 430 34 235 4.5 0.35 33 24
N08705 0.75 2.00 0.04 0.04 2.50 37 28 0.50

A As-cast or as agreed upon by the manufacturer and purchaser B When ICI test bars are used in tensile tests as provided for in this specification, the gage length to reduced section diameter ratio shall be 4:1 C Castings having a specified molybdenum range agreed upon by the manufacturer and the purchaser may also be furnished under these specifications

ASTM A 351 /A 351M – 06 CASTINGS, AUSTENITIC, AUSTENITIC-FERRITIC, FOR PRESSURE-CONTAINING PARTS

This specification covers austenitic and austenitic-ferritic (duplex) steel castings for valves, flanges, fittings, and other pressure-containing parts.

GRADE & MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
HEAT TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentB Tensile Strength Yield StrengthH ElongD % C Mn P S Si Ni Cr Mo N Cb Cu V
and UNS ksi MPa ksi MPa
CF3 J92700 ST 70 485 30 205 35.0 0.03 1.50 0.040 0.040 2.00 8.0 12.0 17.0 21.0 0.50
CF3AA J92700 ST 77 530 35 240 35.0 0.03 1.50 0.040 0.040 2.00 8.0 12.0 17.0 21.0 0.50
CF8 J92600 ST 70 485 30 205 35.0 0.08 1.50 0.040 0.040 2.00 8.0 11.0 18.0 21.0 0.50
CF8AA J92600 ST 77 530 35 240 35.0 0.08 1.50 0.040 0.040 2.00 8.0 11.0 18.0 21.0 0.50
CF3M J92800 ST 70 485 30 205 30.0 0.03 1.50 0.040 0.040 1.50 9.0 13.0 17.0 21.0 2.00 3.00
CF3MAA J92800 ST 80 550 37 255 30.0 0.03 1.50 0.040 0.040 1.50 9.0 13.0 17.0 21.0 2.00 3.00
CF8M J92900 ST 70 485 30 205 30.0 0.08 1.50 0.040 0.040 1.50 9.0 12.0 18.0 21.0 2.00 3.00
CF3MN J92804 ST 75 515 37 255 35.0 0.03 1.50 0.040 0.040 1.50 9.0 13.0 17.0 21.0 2.00 3.00 0.10 0.20

GRADE & MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
HEAT TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentB Tensile Strength Yield StrengthH ElongD % C Mn P S Si Ni Cr Mo N Cb Cu V
and UNS ksi MPa ksi MPa
CF8C J92710 ST 70 485 30 205 30.0 0.08 1.50 0.040 0.040 2.00 9.0 12.0 18.0 21.0 0.50 E
CF-10 J92590 ST 70 485 30 205 35.0 0.04 0.10 1.50 0.040 0.040 2.00 8.0 11.0 18.0 21.0 0.50
CF-10M J92901 ST 70 485 30 205 30.0 0.04 0.10 1.50 0.040 0.040 1.50 9.0 12.0 18.0 21.0 2.00 3.00
CH8 J93400 ST 65 450 28 195 30.0 0.08 1.50 0.040 0.040 1.50 12.0 15.0 22.0 26.0 0.50
CH10 J93401 ST 70 485 30 205 30.0 0.04 0.10 1.50 0.040 0.040 2.00 12.0 15.0 22.0 26.0 0.50
CH20 J93402 ST 70 485 30 205 30.0 0.04 0.20 1.50 0.040 0.040 2.00 12.0 15.0 22.0 26.0 0.50
CK20 J94202 ST 65 450 28 195 30.0 0.04 0.20 1.50 0.040 0.040 1.75 19.0 22.0 23.0 27.0 0.50
HK30 J94203 As cast 65 450 30 240 10.0 0.25 0.35 1.50 0.040 0.040 1.75 19.0 22.0 23.0 27.0 0.50
HK40 J94204 As cast 62 425 30 240 10.0 0.35 0.45 1.50 0.040 0.040 1.75 19.0 22.0 23.0 27.0 0.50
HT30 N08030 As cast 65 450 28 195 15.0 0.25 0.35 2.00 0.040 0.040 2.50 33.0 37.0 13.0 17.0 0.50
CF10MC J92971 ST 70 485 30 205 20.0 0.10 1.50 0.040 0.040 1.50 13.0 16.0 15.0 18.0 1.75 2.25 F
CN7M N08007 ST 62 425 25 170 35.0 0.07 1.50 0.040 0.040 1.50 27.5 30.5 19.0 22.0 2.00 3.00 3.0 4.0
CN3MN J94651 ST 80 550 38 260 35.0 0.03 2.00 0.040 0.010 1.00 23.5 25.5 20.0 22.0 6.0 7.0 0.18 0.26 0.75
CE8MN ST C 95 655 65 450 25.0 0.08 1.00 0.040 0.040 1.50 8.0 11.0 22.5 25.5 3.0 4.5 0.10 0.30
CG6MMN J93790 ST 85 585 42.5 295 30.0 0.06 4.00 6.00 0.040 0.030 1.00 11.50 13.50 20.50 23.50 1.50 3.00 0.20 0.40 0.10 0.30 0.10 0.30
CG8M J93000 ST 75 515 35 240 25.0 0.08 1.50 0.04 0.04 1.50 9.0 13.0 18.0 21.0 3.0 4.0
CF10SMnN J92972 ST 85 585 42.5 295 30.0 0.10 7.00 9.00 0.060 0.03 3.50 4.50 8.0 9.0 16.0 18.0 0.08 0.18
CT15C N08151 As cast 63 435 25 170 20.0 0.05 0.15 0.15 1.50 0.03 0.03 0.15 1.50 31.0 34.0 19.0 21.0 0.50 1.50
CK3MCuN J93254 ST C 80 550 38 260 35.0 0.025 1.20 0.045 0.010 1.00 17.5 19.5 19.5 20.5 6.0 7.0 0.18 0.24 0.50 1.00
CE20NA,G J92802 ST C 85 550 40 275 30.0 0.20 1.50 0.040 0.040 1.50 8.0 11.0 23.0 26.0 0.50 0.08 0.20
CG3M 75 515 35 240 25.0 9.0 18.0 3.0
J92999 ST 0.03 1.50 0.04 0.04 1.50 13.0 21.0 4.0

A Because of thermal instability of Grades CF3A, CF3MA, CF8A, and CE20N they are not recommended for service at temperatures above 800 F [425 C]
B ST = to be solution treated
C Refer to original specification for additional information on heat treatment requirements
D When ICI test bars are used in tensile tests as provided for in Specification A 985/A 985M, the gage length to reduced section diameter ratio shall be 4:1
E Grade CF8C shall have a columbium content of not less than 8 times the carbon content but not over 1.00%
F Grade CF10MC shall have a columbium content of not less than 10 times the carbon content but not over 1.20%
GGrade shall be quenched in water or the castings may be furnace cooled to 2050°F(1120°C) minimum, held for 15 minutes minimum and then quenched in water or rapidly cooled by other means. H Determine by the 0.2% offset method.

ASTM A 447 /A 447M – 07 STEEL CASTINGS, CHROMIUM-NICKEL-IRON ALLOY (25-12 CLASS), FOR HIGH-TEMPERATURE SERVICE

This specification covers iron-base, heat-resisting alloy castings of the 25% chromium, 12% nickel class, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications up to 2000 F [1095 C]. The purchaser should inform the manufacturer when the service temperatures are to exceed 1800 F [980 C].

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade And UNS Heat TreatmentA Tensile StrengthBC Red A % Other TestsDE Magnetic Permeability C Mn P S Si NiF Cr N FeG
ksi MPa
I J93303 As cast 80 550 9 1.70 0.20 0.45 2.50 0.05 0.05 1.75 10.00 14.00 23.00 28.00 0.20
II J93303 As cast 80 550 4 1.05 0.20 0.45 2.50 0.05 0.05 1.75 10.00 14.00 23.00 28.00 0.20

A As agreed upon by manufacturer and purchaser B Properties after aging C Short term, high temperature tensile property requirements for the grades are as follows: Type I is to be agreed upon by manufacturer and producer, and Type II is to have a minimum of 20 ksi [140 MPa] tensile strength and a minimum elongation of 8%D The stress rupture test for the grades is as follows with the tensile stress being sustained for at least 16h: Type I at 5 ksi [34 MPa] and Type II at 8 ksi [55 MPa] E Refer to original specification for details; note that out of the four tests (tension after aging, magnetic permeability, stress rupture, and short time high-temperature) the purchaser shall specify no more than two testsF Commercial nickel usually carries a small amount of cobalt, and within the usual limits cobalt shall be counted as nickel G The manufacturer and purchaser may agree upon allowable limits of iron and other elements

ASTM A 494 /A 494M – 08 CASTINGS, NICKEL AND NICKEL ALLOY

This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel chromium, and nickel-molybdenum-chromium alloy castings for corrosion resistant service.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat Tensile Strength Yield Strength Elong E % C Mn Si P S Cu Mo Fe Ni Cr Cb W V Bi Sn
And UNS Treatment ksi MPa ksi MPa
CZ-100 N02100 As cast 50 345 18 125 10.0 1.00 1.50 2.00 0.03 0.03 1.25 3.00 95.0 min
M-35-1A N24135 As cast 65 450 25 170 25.0 0.35 1.50 1.25 0.03 0.03 26.0 33.0 3.50 bal. 0.5
M-35-2 N04020 As cast 65 450 30 205 25.0 0.35 1.50 2.00 0.03 0.03 26.0 33.0 3.50 bal. 0.5
M-30H N24030 As cast 100 690 60 415 10 0.30 1.50 2.7 3.7 0.03 0.03 27.0 33.0 3.50 bal. B
M-25SC,D N24025 As cast or age-hardenedF 0.25 1.50 3.5 4.5 0.03 0.03 27.0 33.0 3.50 bal.
M-30CA N24130 As cast 65 450 32.5 225 25 0.30 1.50 1.0 2.0 0.03 0.03 26.0 33.0 3.50 bal. 1.0 3.0
N3M J30003 ST 76 525 40 275 20.0 0.30 1.00 0.50 0.040 0.300 30.0 33.0 3.00 bal. 1.0 B
N-7M J30007 ST 76 525 40 275 20.0 0.07 1.00 1.00 0.040 0.030 30.0 33.0 3.0 bal. 1.0 B
N-12MV N30012 ST 76 525 40 275 6.0 0.12 1.00 1.00 0.040 0.030 26.0 30.0 4.0 6.0 bal. 1.00 0.20 0.60
CY-40 N06040 As cast or ST 70 485 28 195 30.0 0.40 1.50 3.00 0.03 0.03 11.0 bal. 14.0 17.0 B B B
CW-12MW N30002 ST 72 495 40 275 4.0 0.12 1.00 1.00 0.040 0.030 B 16.0 18.0 4.5 7.5 bal. 15.5 17.5 B 3.75 5.25 0.20 0.40
CW-6M N30107 ST 72 495 40 275 25.0 0.07 1.00 1.00 0.040 0.030 B 17.0 20.0 3.0 bal. 17.0 20.0 B B B
CW-2M N26455 ST 72 495 40 275 20.0 0.02 1.00 0.80 0.03 0.03 B 15.0 17.5 2.0 bal. 15.0 17.5 B 1.0 B
CW-6MC N26625 ST 70 485 40 275 25.0 0.06 1.00 1.00 0.015 0.015 B 8.0 10.0 5.0 bal. 20.0 23.0 3.15 4.50 B B
CY5SnBiM N26055 As cast 0.05 1.5 0.5 0.03 0.03 2.0 3.5 2.0 bal. 11.0 14.0 3.0 5.0 3.0 5.0
CX2M N260022 ST 72 495 39 270 40 0.02 1.00 0.50 0.20 0.20 B 15.0 16.5 1.5 bal. 22.0 24.0 B B B
CX2MW N26022 ST 80 550 45 280 30.0 0.02 1.00 0.08 0.025 0.025 B 12.5 14.5 2.0 6.0 bal. 20.0 22.5 B 2.5 3.5 0.35
CU5MCuC N28820 ST F 75 520 35 240 20.0 0.050 1.0 1.0 0.030 0.030 1.50 3.50 2.5 3.5 bal. 38.0 44.0 19.5 23.5 0.60 1.20 B

A When weldability is needed, Grade M-35-1 or M-30C should be ordered B For information only C Minimum age-hardened 300 BHN 38

D M-25S, while machinable in the “as cast” condition is capable of being solution treated for improved machinability; it may be subsequently age-hardened to the specified hardness and finished machined or groundE When ICI test bars are used in tensile tests as provided for per Specification A 732/A 732M, the gage length to reduced section diameter ratio shall be 4:1 F Refer to original specification for additional information on heat treatment requirements

ASTM A 560 /A 560M – 05 CASTINGS, CHROMIUM-NICKEL ALLOY

This specification covers chromium-nickel alloy castings intended for heat resisting and elevated-temperature corrosion applications such as structural members, containers, supports, hangers, spacers and the like in corrosive environments up to 2000 F [1090 C].

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given)D
Grade Heat TreatmentA Tensile Strength Yield Strength Elong % Other Tests C Mn Si S P N N+C Fe Ti Al Cb Cr Ni
And UNS ksi MPa ksi MPa
50 Cr-50 Ni As cast 80 550 50 340 5.0 B 48.0
R20500 0.10 0.30 1.00 0.02 0.02 0.30 1.00 0.50 0.25 52.0 bal
60 Cr-40 Ni As cast 110 760 85 590 C 58.0
R20600 0.10 0.30 1.00 0.02 0.02 0.30 1.00 0.50 0.25 62.0 bal
50 Cr-50 Ni-Cb As cast 80 550 50 345 5.0 1.4 47.0
R20501 0.10 0.30 0.50 0.02 0.02 0.16 0.20 1.00 0.50 0.25 1.7 52.0 bal

A Heat treatment as agreed upon by manufacturer and purchaser B Impact, unnotched Charpy, 50 ft-lbs [78J] minimum C Impact, unnotched Charpy, 10 ft-lbs [14J] minimum D The total of the Cr, Ni, and Cb contents must exceed 97.5%

ASTM A 743 /A 743M – 06CASTINGS, IRON-CHROMIUM, IRON-CHROMIUM-NICKEL, CORROSION RESISTANT, FOR GENERAL APPLICATION

This specification covers iron-chromium and iron-chromium-nickel-alloy castings for general corrosion-resistant application. The grades covered by this specification represent types of alloy castings suitable for broad ranges of application which are intended for a wide variety of corrosion environments.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongD % Red A % Other Tests C Mn Si P S Cr Ni Mo Cb Se Cu W V N
and UNS ksi Mpa Ksi Mpa
CF-8 ST 70E 485E 30E 205E 35 B 18.0 8.0
J92600 0.08 1.50 2.00 0.04 0.04 21.0 11.0
CG-12 ST 70 485 28 195 35 20.0 10.0
J93001 0.12 1.50 2.00 0.04 0.04 23.0 13.0
CF-20 ST 70 485 30 205 30 18.0 8.0
J92602 0.20 1.50 2.00 0.04 0.04 21.0 11.0
CF-8M ST 70 485 30 205 30 B 18.0 9.0 2.0
J92900 0.08 1.50 2.00 0.04 0.04 21.0 12.0 3.0
CF-8C ST 70 485 30 205 30 B 18.0 9.0 G 0.2
J92710 0.08 1.50 2.00 0.04 0.04 21.0 12.0 0.35
CF-16F ST 70 485 30 205 25 18.0 9.0
J92701 0.16 1.50 2.00 0.17 0.04 21.0 12.0 1.50

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongD % Red A % Other Tests C Mn Si P S Cr Ni Mo Cb Se Cu W V N
and UNS ksi Mpa Ksi Mpa
CF-16Fa ST 70 485 30 205 25 0.20 18.0 9.0 0.4
0.16 1.50 2.00 0.04 0.40 21.0 12.0 0.8
CH-10 ST 70 485 30 205 30 22.0 12.0
J93401 0.10 1.50 2.00 0.04 0.04 26.0 15.0
CH-20 70 485 30 205 3 22.0 12.0
J93402 ST 0 0.20 1.50 2.00 0.04 0.04 26.0 15.0
CK-20 ST 65 450 28 195 30 23.0 19.0
J94202 0.20 2.00 2.00 0.04 0.04 27.0 22.0
CE-30 ST 80 550 40 275 10 26.0 8.0
J93423 0.30 1.50 2.00 0.04 0.04 30.0 11.0
CA-15 NT or A 90 620 65 450 18 30 C 11.5
J91150 0.15 1.00 1.50 0.04 0.04 14.0 1.00 0.50
CA-15M NT or A 90 620 65 450 18 30 C 11.5 0.15
J91151 0.15 1.00 0.65 0.040 0.040 14.0 1.0 1.00
CB-30 N or A 65 450 30 205 C 18.0 H
J91803 0.30 1.00 1.50 0.04 0.04 21.0 2.00
CC-50 N or A 55 380 C 26.0
J92615 0.50 1.00 1.50 0.04 0.04 30.0 4.00
CA-40 NT or A 100 690 70 485 15 25 C 0.20 11.5
J91153 0.40 1.00 1.50 0.04 0.04 14.0 1.0 0.50
CA-40F NT or A 100 690 70 485 12 C 0.20 0.20 11.5
J91154 0.40 1.00 1.50 0.04 0.40 14.0 1.0 0.5
CF-3 As cast or ST 70 485 30 205 35 B 17.0 8.0
J92500 0.03 1.50 2.00 0.04 0.04 21.0 12.0
CF10SMnN ST 85 585 42 290 30 7.0 3.50 16.0 8.0 0.08
J92972 0.10 9.0 4.50 0.060 0.030 18.0 9.0 0.18
CF-3M As cast or ST 70 485 30 205 30 B 17.0 9.0 2.0
J92800 0.03 1.50 1.50 0.04 0.04 21.0 13.0 3.0
CF3MN As cast or ST 75 515 37 255 35 17.0 9.0 0.10
J92804 0.03 1.50 1.50 0.040 0.040 21.0 13.0 0.20
CG6MMN ST 85 585 42 290 30 4.0 20.5 11.5 1.50 0.10 0.10 0.20
J93790 0.006 6.0 1.00 0.04 0.03 23.5 13.5 3.00 0.30 0.30 0.40
CG-3M ST 75 515 35 240 25 B 18.0 9.0 3.0
J92999 0.03 1.50 1.50 0.04 0.04 21.0 13.0 4.0
CG-8M ST 75 520 35 240 25 18.0 9.0 3.0
J93000 0.08 1.50 1.50 0.04 0.04 21.0 13.0 4.0
CN3M ST 63 435 25 170 30 20.0 23.0 4.5
J94652 0.03 2.0 1.0 0.03 0.03 22.0 27.0 5.5
CN-3MN ST 80 550 38 260 35 20.0 23.5 6.0 0.18
J94651 0.03 2.00 1.00 0.040 0.010 22.0 15.5 7.0 0.75 0.26
CN-7M ST 62 425 25 170 35 19.0 27.5 2.0 3.0
N08007 0.07 1.50 1.50 0.04 0.04 22.0 30.5 3.0 4.0
CN-7MS ST 70 485 30 205 35 2.50 18.0 22.0 2.5 1.5
J94650 0.07 1.00 3.50 0.04 0.03 20.0 25.0 3.0 2.0
CA-6NM NT 110 755 80 550 15 35 C 11.5 3.5 0.40
J91540 0.06 1.00 1.00 0.04 0.03 14.0 4.5 1.0

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongD % Red A % Other Tests C Mn Si P S Cr Ni Mo Cb Se Cu W V N
and UNS ksi Mpa Ksi Mpa
CA-6N J91650 CA-28MWVF J91422 CK-3MCuN J93254 CK-35MN CB-6 J91804 NT QT or A ST ST NT 140 140 80 83 115 965 965 550 570 790 135 110 38 41 85 930 760 260 280 580 15 10 35 35 16 50 24 35 C 0.06 0.20 0.28 0.025 0.035 0.06 0.50 0.50 1.00 1.20 2.0 1.00 1.00 1.0 1.00 1.00 1.00 0.02 0.030 0.045 0.035 0.04 0.02 0.030 0.010 0.020 0.03 10.5 12.5 11.0 12.5 19.5 20.5 22.0 24.0 15.5 17.5 6.0 8.0 0.50 1.00 17.5 19.5 20.0 22.0 3.5 5.5 0.90 1.25 6.0 7.0 6.0 6.8 0.5 0.50 1.00 0.40 0.90 1.25 0.20 0.30 0.18 0.24 0.21 0.32

A Refer to original specification for additional heat treatment information B Supplementary intergranular corrosion test if specified by the customer C Supplementary requirement for hardness tests when desired by the purchaser D When ICI test bars are used in tensile tests as provided for in this specification, the gage length to reduced section diameter ratio shall be 4:1 E For low ferrite or nonmagnetic castings of this grade, the following values shall apply: tensile strength, min, 65 ksi [450 MPa]; yield point, min, 28 ksi [195 MPa] F These mechanical properties apply only when heat-treatment (1) has been used G Grade CF-8C shall have a columbium content of not less than 8 times the carbon content and not more than 1.0% -if a columbium plus tantalum alloy in the approximate Cb:Ta ratio of 3:1 is used for stabilizing this grade, the total columbium-plus-tantalum content shall not be less than nine times the carbon content and shall not exceed 1.1%H For Grade CB-30 a copper content of 0.90 to 1.20% is optional

ASTM A 744 /A 744M – 06 CASTINGS, IRON-CHROMIUM-NICKEL, CORROSION RESISTANT, FOR SEVERE SERVICE

This specification covers iron-chromium-nickel-alloy, stainless steel castings intended for particularly corrosive applications.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength ElongB % Red A % Other TestsC C Mn P S Si Ni Cr Mo Cb Cu N
and UNS ksi MPa ksi MPa
CF-8 J92600 ST 70E 485E 30E 205E 35 0.08 1.50 0.04 0.04 2.00 8.0 11.0 18.0 21.0
CF-8M J92900 ST D 70 485 30 205 30 0.08 1.50 0.04 0.04 2.00 9.0 12.0 18.0 21.0 2.0 3.0
CF-8C J92710 ST 70 485 30 205 30 0.08 1.50 0.04 0.04 2.00 9.0 12.0 18.0 21.0 F
CF-3 J92500 ST 70 485 30 205 35 0.03G 1.50 0.04 0.04 2.00 8.0 12.0 17.0 21.0
CF-3M J92800 ST D 70 485 30 205 30 0.03G 1.50 0.04 0.04 1.50 9.0 13.0 17.0 21.0 2.0 3.0
CG-3M J92999 ST 75 515 35 240 25 0.03 1.50 0.04 0.04 1.50 9.0 13.0 18.0 21.0 3.0 4.0
CG-8M J93000 ST D 75 520 35 240 25 0.08 1.50 0.04 0.04 1.50 9.0 13.0 18.0 21.0 3.0 4.0
CN-7M N08007 ST 62 425 25 170 35 0.04 1.50 0.04 0.04 1.50 27.5 30.5 19.0 22.0 2.0 3.0 3.0 4.0
CN-7MS J94650 ST 70 485 30 205 35 0.07 1.00 0.04 0.03 2.50 3.50 22.0 25.0 18.0 20.0 2.5 3.0 1.5 2.0
CN-3MN J94651 ST 80 550 38 260 35 0.03 2.00 0.040 0.010 1.00 23.5 25.5 20.0 22.0 6.00 7.00 0.75 0.18 0.26
CK3MCuN J93254 ST 80 550 38 260 35 0.025 1.20 0.045 0.010 1.0 17.5 19.5 19.5 20.5 6.0 7.0 0.50 1.00 0.180 0.240

A Refer to original specification for additional heat treatment information B When ICI test bars are used in tensile tests as provided for in this specification, the gage length to reduced section diameter ratio shall be 4:1 C Supplementary intergranular corrosion test if specified by the customer D For optimum tensile strength, ductility and corrosion resistance, the solution annealing temperature should be in excess of 1900 F [1040 C] E For low ferrite or nonmagnetic castings of this grade, the following values shall apply: tensile strength, min, 65 ksi [450 MPa]; yield point, min, 28 ksi [195 MPa] F Grade CF-8C shall have a columbium content of not less than 8 times the carbon content and not more than 1.0% -if a columbium-plus-tantalum alloy in the approximate Cb:Ta ration of 3:1 is used for stabilizing this grade, the total columbium-plus-tantalum content shall not be less than 9 times the carbon content sand shall not exceed 1.1%G For purposes of determining conformance with this specification, the observed or calculated value for carbon content shall be rounded to the nearest 0.01% in accordance with rounding method of Recommended Practice E29

ASTM A 747 /A 747M – 07 STEEL CASTINGS, STAINLESS, PRECIPITATION HARDENING

This specification covers iron-chromium-nickel-copper corrosion-resistant steel castings, capable of being strengthened by precipitation hardening heat treatment.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong% Red A % Other Tests Hardness (HBN) C Mn P S Si Ni Cr Cu Cb N
ksi MPa ksi MPa
CB7Cu-1 J92180 H-900A H-925A 170 175 1170 1205 145 150 1000 1035 5 5 375 375 0.07 0.70 0.035 0.03 1.00 3.60 4.60 15.50 17.70 2.50 3.20 0.15B 0.35B 0.05C
H-1025A 150 1035 140 965 9 311
H-1075A 145 1000 115 795 9 277
H-1100A 135 930 110 760 9 269
H-1150A 125 860 97 670 10 269
CB7Cu-2 J92110 H-1150M H-1150DBL H-900A H-925A 170 175 1170 1205 145 150 1000 1035 5 5 310 Max 310 Max 375 375 0.07 0.70 0.035 0.03 1.00 4.50 5.50 14.0 15.50 2.50 3.20 0.15B 0.35B 0.05C
H-1025A 150 1035 140 965 9 311
H-1075A 145 1000 115 795 9 277
H-1100A 135 930 110 760 9 269
H-1150A 125 860 97 670 10 269
H-1150M H-1150DBL 310 Max 310 Max

A All mechanical properties are supplementary and are not required unless stipulated by the customer, see original specification for additional information B When the H900 condition is ordered, the minimum Cb shall not apply C To be determined and reported when specified by the order or contract

ASTM A 890 /A 890M – 07 CASTINGS, IRON-CHROMIUM-NICKEL-MOLYBDENUM CORROSION-RESISTANT, DUPLEX (AUSTENITIC/FERRITIC) FOR GENERAL APPLICATION

This specification covers a group of cast duplex stainless steels (austenitic/ferritic).

GRADE & HEAT MECHANICAL PROPERTIESB CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat TreatmentA Tensile Strength Yield Strength Elong % Red A % Other Tests C Mn P S Si Ni Cr Mo Cu N W
ksi MPa ksi Mpa
1A 100 690 70 485 16 4.75 24.5 1.75 2.75
CD4MCu ST 0.04 1.00 0.040 0.040 1.00 6.00 26.5 2.25 3.25
J93370
1B 100 690 70 485 16 4.7 24.5 1.7 2.7 0.10
CD4MCuN ST 0.04 1.0 0.04 0.04 1.0 6.0 26.5 2.3 3.3 0.25
J93372
1CC 100 690 65 450 25 5.6 24.0 2.9 1.40 0.22
CD3MCuN ST 0.030 1.20 0.030 0.030 1.10 6.7 26.7 3.8 1.90 0.33
J93373
2A 95 655 65 450 25 8.00 22.5 3.00 0.10
CE8MN ST 0.08 1.00 0.04 0.04 1.50 11.00 25.5 4.50 0.30
J93345
3A 95 655 65 450 25 4.00 24.0 1.75 0.15
CD6MN ST 0.06 1.00 0.040 0.040 1.00 6.00 27.0 2.50 1.00 0.25
J93371
4A 90 620 60 415 25 4.5 21.0 2.5 0.10
CD3MN ST 0.03 1.50 0.04 0.020 1.00 6.5 23.5 3.5 0.30
J92205
5AC J93404 ST 100 690 75 515 18 0.03 1.50 0.04 0.04 1.00 6.0 8.0 24.0 26.0 4.0 5.0 0.10 0.30
6AC J93380 ST 100 690 65 450 25 0.03 1.00 0.030 0.025 1.00 6.5 8.5 24.0 26.0 3.0 4.0 0.5 1.0 0.20 0.30 0.5 1.0

A See original specification for additional details on heat treatment B Tensile requirement is a supplementary requirement, see original specification for additional details C %Cr + 3.3% Mo +16% N ≥40

ASTM A 990 – 08CASTINGS, IRON-NICKEL-CHROMIUM AND NICKEL ALLOYS, SPECIALLY CONTROLLED FOR PRESSURE RETAINING PARTS FOR CORROSIVE SERVICE

This specification covers iron-nickel-chromium and nickel alloy castings specially processed with restricted melt practices, weldability testing and nondestructive examination (NDE) requirements.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat TreatmentA Tensile Strength Yield Strength Elong % Red A % Other TestsB C Mn P S Si Ni Cr Mo Fe W Cu
and UNS ksi MPa ksi MPa

CW-2M ST 72 495 40 275 20.0 0.020 1.00 0.030 0.015 0.80 Bal. 15.0 17.5 15.0 17.5 2.00 1.00
CN3MCu ST 62 425 25 170 35 0.030 1.50 0.030 0.015 1.00 19.0 22.0 2.0 3.0 Bal 3.0 3.5
M35-1 As cast 65 450 25 170 25 0.35 1.50 0.030 0.015 1.25 3.5 26.0 33.0

A See original specification for additional details on heat treatment B See original specification for additional details on Nondestructive Examination Requirements

ISO 11972 CORROSION-RESISTANT CAST STEELS FOR GENERAL APPLICATIONS

This International Standard specifies cast steels for general corrosion-resistant applications. The grades covered by this International Standard represent types of alloy steel castings suitable for broad ranges of application which are intended for a wide variety of corrosion applications.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat Tensile Strength Yield Strength Elong Red A Other Tests C Mn P S Si Ni Cr Mo N Nb Cu
and UNS TreatmentA ksi Mpa ksi Mpa % % Impact (J) Ruling Thickness (mm)
GX 12 Cr 12 GX 8 CrNiMo 12 1 GX 4 CrNi 12 4 (QT 1) GX 4 CrNi 12 4 (QT 2) GX 4 CrNiMo 16 5 1 GX 2 CrNi 18 10 GX 2 CrNiN 18 10 GX 5 CrNi 19 9 GX 6 CrNiNb 19 10 A & T A & T A & T A & T A & T ST ST ST ST 620 590 750 900 760 440 510 440 440 450 440 550 830 540 180 230 180 180 14 15 15 12 15 30 30 30 25 20 27 45 35 60 80 80 60 40 150 300 300 300 300 150 150 150 150 0.15 0.10 0.06 0.06 0.06 0.03 0.03 0.07 0.08 0.8 0.8 1.5 1.5 0.8 1.5 1.5 1.5 1.5 0.035 0.035 0.035 0.035 0.035 0.040 0.040 0.040 0.040 0.025 0.025 0.025 0.025 0.025 0.030 0.030 0.030 0.030 0.8 0.8 1.0 1.0 0.8 1.5 1.5 1.5 1.5 1.0 0.8 1.8 3.5 5.0 3.5 5.0 4.0 6.0 9.0 12.0 9.0 12.0 8.0 11.0 9.0 12.0 11.5 13.5 11.5 13.0 11.5 13.0 11.5 13.0 15.0 17.0 17.0 19.0 17.0 19.0 18.0 21.0 18.0 21.0 0.5 0.2 0.5 1.0 1.0 0.7 1.5 0.10 0.20 8xC 1.00
GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade Heat Tensile Strength Yield Strength Elong Red A Other Tests C Mn P S Si Ni Cr Mo N Nb Cu
and UNS TreatmentA ksi Mpa ksi Mpa % % Impact (J) Ruling Thickness (mm)
GX 2 CrNiMo 19 11 2 GX 2 CrNiMoN 19 11 2 GX 5 CrNiMo 19 11 2 GX 6 CrNiMoNb 19 11 2 GX 2 CrNiMo 19 11 3 GX 2 CrNiMoN 19 11 3 GX 5 CrNiMo 19 11 3 GX 2 CrNiCuMoN 26 5 3 3 GX 2 CrNiMoN 26 5 3 ST ST ST ST ST ST ST ST ST 440 510 440 440 440 510 440 650 650 180 230 180 180 180 230 180 450 450 30 30 30 25 30 30 30 18 18 80 80 60 40 80 80 60 50 50 150 150 150 150 150 150 150 150 150 0.03 0.03 0.07 0.08 0.03 0.03 0.07 0.03 0.03 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.035 0.035 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.025 0.025 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.0 1.0 9.0 12.0 9.0 12.0 9.0 12.0 9.0 12.0 9.0 12.0 9.0 12.0 9.0 12.0 4.5 6.5 4.5 6.5 17.0 20.0 17.0 20.0 17.0 20.0 17.0 20.0 17.0 20.0 17.0 20.0 17.0 20.0 25.0 27.0 25.0 27.0 2.0 2.5 2.0 2.5 2.0 2.5 2.0 2.5 3.0 3.5 3.0 3.5 3.0 3.5 2.5 3.5 2.5 3.5 0.10 0.20 0.10 0.20 0.12 0.25 0.12 0.25 8xC 1.00 2.5 3.5

A See original specifications for additional information

ISO 11973 HEAT-RESISTANT CAST STEELS FOR GENERAL PURPOSES This International Standard covers cast steels for heat resistant service.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Tests C Mn P S Si Ni Cr Mo Nb Co W N N+C W Fe

ksi MPa ksi MPa Hardness (HBN) Use Temp. (C)C
GX 30 CrSi 7 GX 40 CrSi 13 GX 40 CrSi 17 GX 40 CrSi 24 GX 40 CrSi 28 GX 130 CrSi 29 A or as cast A A A A A 300B 300B 300B 320B 400B 750 850 900 1050 1100 1100 0.20 0.35 0.30 0.50 0.30 0.50 0.30 0.50 0.30 0.50 1.20 1.40 0.50 1.00 0.50 1.00 0.50 1.00 0.50 1.00 0.50 1.00 0.50 1.00 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.030 0.030 0.030 0.030 0.030 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 0.50 1.00 1.00 1.00 1.00 1.00 6.00 8.00 12.00 14.00 16.00 19.00 23.00 26.00 27.00 30.00 27.00 30.00 0.50 0.50 0.50 0.50 0.50 0.50
GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Other Tests C Mn P S Si Ni Cr Mo Nb Co W N N+C W Fe

ksi MPa ksi MPa Hardness (HBN) Use Temp. (C)C
GX 25 CrNiSi 18-9 GX 25 CrNiSi 20-14 GX 40 CrNiSi 22-10 GX 40 CrNiSiNb 24-24 GX 40 CrNiSi 25-12 GX 40 CrNiSi 25-20 GX 40 CrNiSi 27-4 GX 40 NiCrCo 20-20-20 GX 10 NiCrNb 31-20 GX 40 NiCrSi 35-17 GX 40 NiCrSi 35-26 GX 40 NiCrSiNb 35-26 GX 40 NiCrSi 38-19 GX 40 NiCrSiNb 38-19 GX 45 NiCrWSi 48-28-5 GX 10 NiCrNb 50-50 GX 50 NiCr 52-19 GX 50 NiCr 65-15 GX 45 NiCrCoW 35-25-15-5 GX 30 CoCr 50-28 As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast As cast 450 450 450 400 450 450 400 400 440 420 440 440 420 420 400 540 440 400 480 A 230 230 230 220 220 220 250 320 170 220 220 220 220 220 220 230 220 200 270 A 15 10 8 4 6 6 3 6 20 6 6 4 6 4 3 8 5 3 5 A 400 Max A 900 900 950 1050 1050 1100 1100 1150 1000 980 1050 1050 1050 1000 1200 1050 1100 1100 1200 1200 0.15 0.35 0.15 0.35 0.30 0.50 0.25 0.50 0.30 0.50 0.30 0.50 0.30 0.50 0.35 0.60 0.05 0.12 0.30 0.50 0.30 0.50 0.30 0.50 0.30 0.50 0.30 0.50 0.35 0.55 0.10 0.40 0.60 0.35 0.65 0.44 0.48 0.50 2.00 2.00 2.00 2.00 2.00 2.00 1.50 2.00 1.20 2.00 2.00 2.00 2.00 2.00 1.50 0.50 1.50 1.30 2.00 1.00 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.020 0.040 0.040 0.040 0.040 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.030 0.020 0.030 0.030 0.030 0.030 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 1.20 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 1.00 2.50 0.50 0.50 2.00 2.00 1.00 2.00 1.00 8.00 10.00 13.00 15.00 9.00 11.00 23.00 25.00 11.00 14.00 19.00 22.00 3.00 6.00 18.00 22.00 30.00 34.00 34.00 36.00 33.00 36.00 33.00 36.00 36.00 39.00 36.00 39.00 47.00 50.00 bal. 50.00 55.00 64.00 69.00 33.00 37.00 1.00 17.00 19.00 19.00 21.00 21.00 23.00 23.00 25.00 24.00 27.00 24.00 27.00 25.00 28.00 19.00 22.00 19.00 23.00 16.00 18.00 24.00 27.00 24.00 27.00 18.00 21.00 18.00 21.00 27.00 30.00 47.00 52.00 16.00 21.00 13.00 19.00 24.00 26.00 25.00 30.00 0.50 0.50 0.50 0.50 0.50 0.50 0.50 2.50 3.00 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 1.20 1.80 0.80 1.50 0.80 1.80 1.20 1.80 1.4 1.7 18.00 22.00 14.0 16.0 48.0 52.0 2.0 3.0 4.00 6.00 0.16 0.20 4.0 6.0 20.0

A Properties as agreed upon by manufacturer and purchaser B Maximum hardness in annealed condition – castings may also be supplied in the “as cast” condition, in which case hardness limits will not apply

C Maximum use temperature depends upon the actual use conditions and these values are being given only to aid the user; these are given for oxidising environments, the actual alloy composition will also affect performance

ISO 12725 NICKEL AND NICKEL ALLOY CASTINGS

This International Standard specifies requirements for nickel and nickel alloy castings. The grades covered represent types of alloys suitable for a broad range of application in a wide variety of corrosive and high temperature environments.

GRADE & HEAT TREATMENT MECHANICAL PROPERTIES (minimum unless range given) CHEMICAL COMPOSITION, % (maximum percent unless range given) B
Grade and UNS Heat TreatmentA Tensile Strength Yield Strength Elong % Red A % Other Tests Hardness (HBN) C Co Cr Cu Fe Mn Mo Ni P S Si W Nb V Nb+Ta
ksi MPa ksi MPa
C-Ni99, HC As cast 345 545 125 10 1.00 1.25 3.0 1.50 95.0 0.030 0.030 2.00
C-NiCu30Si As cast 450 650 205 25 0.35 26.0 33.0 3.5 1.50 bal. 0.030 0.030 2.00 0.5
C-NiCu30 As cast 450 170 25 0.35 26.0 33.0 3.5 1.50 bal. 0.030 0.030 1.25 0.5
C-NiCu30Si3 As cast 690 890 415 10 0.30 27.0 33.0 3.5 1.50 bal. 0.030 0.030 2.7 3.7
C-NiCu30Nb2Si2 As cast 450 225 25 0.30 26.0 33.0 .5 1.50 bal. 0.030 0.030 1.0 2.0 1.0 3.0
C-NiMo31 WQ 525 725 275 6 0.03 1.0 3.0 1.00 30.0 33.0 bal. 0.030 0.030 1.00
C-NiMo30Fe5 WQ 525 725 275 20 0.05 1.0 4.0 6.0 1.00 26.0 33.0 bal. 0.030 0.030 1.00 0.20 0.60
-NiCr22Fe20Mo7Cu2 WQ 550 750 220 30 0.02 5.0 21.5 23.5 1.5 2.5 18.0 21.0 1.00 6.0 8.0 bal. 0.025 0.030 1.00 1.50 0.5
C-NiCr22Mo9Nb4 WQ 485 685 275 25 0.06 20.0 23.0 5.0 1.00 8.0 10.0 bal. 0.030 0.030 1.00 3.2 4.5
C-NiCr16Mo16 WQ 495 695 275 20 0.02 15.0 17.5 2.0 1.00 15.0 17.5 bal. 0.030 0.030 0.80 1.00
C-NiMo17Cr16Fe6W4 WQ 495 695 275 4 0.06 15.5 17.5 4.5 7.5 1.00 16.0 18.0 bal. 0.030 0.030 1.00 3.8 5.3 0.20 0.40
C-NiCr21Mo14Fe4W3 WQ 550 280 30 0.02 20.0 22.5 2.0 6.0 1.00 12.5 14.5 bal. 0.025 0.025 0.80 2.5 3.5 0.35
C-NiCr18Mo18 WQ 495 695 275 25 0.03 17.0 20.0 3.0 1.00 17.0 20.0 bal. 0.030 0.030 1.00
C-NiCr15Fe WQ 485 685 195 30 0.40 14.0 17.0 11.0 1.50 bal. 0.030 0.030 3.00
C-NiFe30Cr20Mo3CuNb AC 450 650 170 25 0.05 19.5 23.5 1.5 3.0 28.0 32.0 1.00 2.5 3.5 bal. 0.030 0.030 0.75 1.20 0.70 1.00
C-NiSi9Cu3 AC 300 0.12 1.0 2.4 4.0 1.50 bal. 0.030 0.030 8.5 10.0

A See original specification for full details
BSingle values are maximum limits, except for nickel for which single values are minimum.

ISO 19960 CAST STEELS AND ALLOYS WITH SPECIAL PHYSICAL PROPERTIES

The cast steel and alloy grades covered by this international standard are used in applications which require low linear thermal expansion, or low ferromagnetic responses, or low galling properties.

GRADE & HEAT MECHANICAL PROPERTIES CHEMICAL COMPOSITION, %
TREATMENT (minimum unless range given) (maximum percent unless range given)
Grade and UNS Heat Treatment Tensile Strength Yield Strength Elong % Red A % Charpy J. min C Si Mn P S Cr Mo Ni N Co Cu Nb V Al Fe Bi Sn
ksi MPa ksi MPa
GX12CrNi18-11 GX2CrNiN18-13 GX2CrNiMoN18-14 GX2CrNiN19-11 GX3CrNiMnSi17-9-8 GX4CrNiMnN22-12-5 ST ST ST ST ST ST 440 590 440 640 490 690 440 580 580 195 210 240 180 290 290 20 30 30 30 24 24 80 115 80 0.15 0.030 0.030 0.030 0.05 0.06 1.50 1.50 1.50 1.50 3.5 4.5 1.00 2.00 2.00 2.00 2.00 7.0 9.0 4.0 6.0 0.045 0.035 0.035 0.035 0.045 0.040 0.030 0.020 0.020 0.020 0.030 0.030 16.5 18.5 16.5 18.5 16.5 18.5 18.0 20.0 16.0 18.0 20.5 23.5 0.75 1.00 2.50 3.00 1.00 1.00 1.50 3.00 10.0 12.0 12.0 14.0 13.0 15.0 10.0 12.0 8.0 9.0 11.5 13.5 0.10 0.20 0.15 0.25 0.10 0.20 0.08 0.18 0.20 0.40 0.50 0.50 0.50 0.50 0.50 0.50 0.10 0.30 0.10 0.30
GX2CrNiMnMoNNb21-16-5-3 GX3NiCo32 GX3NiCo29-17 GX3Ni36 GX3NiS36 G-NiCr13SnBiMo ST ST + T ST + T ST + T ST + T As cast 570 800 425 260 260 315 250 175 175 20 15 20 20 65 0.030 0.05 0.05 0.05 0.05 0.05 1.00 .50 .50 .50 .50 .50 4.0 6.0 0.60 0.50 0.50 0.50 1.50 0.025 0.030 0.030 0.030 0.030 0.030 0.010 0.020 0.020 0.020 0.10 0.20 0.030 20.0 21.5 0.25 0.25 0.25 0.25 11.0 14.0 3.0 3.5 1.00 1.00 1.00 1.00 2.00 3.50 15.0 17.0 30.5 33.5 28.0 30.0 35.0 37.0 35.0 37.0 Bal. 0.20 0.35 4.0 6.5 16.0 18.0 0.50 0.50 0.50 0.50 0.50 0.50 0.25 0.10 2.0 3.0 5.0 3.0 5.0

MIL-C-24707/3 CASTINGS, FERROUS, CORROSION-RESISTANT, AUSTENITIC, CHROMIUM-NICKEL

This specification covers austenitic chromium-nickel alloy castings for corrosion-resistant and low magnetic permeability applications.

PREVIOUS SPECIFICATION MIL specification (class) REPLACEMENT SPECIFICATION MIL-C-24707/3 ASTM specification (grade)
MIL-S-17509 (I) MIL-S-17509 (II) MIL-S-17509 (III) MIL-S-867 (I) MIL-S-867 (II) MIL-S-867 (III) A 744 (CF-8) A 744 (CF-8C) A 744 (CF-8M) A 744 (CF-8) A 744 (CF-8C) A 744 (CF-8M)

Additional notes for specification are as follows; see original military specification booklet for further information, including Quality Assurance Provisions. Two different levels may be specified; level I has no magnetic restrictions and level II has low relative magnetic permeability. For all grades, supplementary requirements SZ1 (intergranular corrosion test) and SZ2 (tension test) of ASTM A 744 shall be mandatory. When type II is specified, the relative magnetic permeability of the castings shall not exceed 1.3 for first article and 1.6 for quality conformance tests; unless otherwise specified, the field strength shall be 0.5 oersteds for first article testing. Heat treat casting per ASTM A 744 except the minimum temperature shall be 1950 F. After all cleaning and machining, the casting shall be passivated in accordance with QQ-P-35.

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