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        Gray Cast Iron Grade SCH30

 
The classification, chemical composition, mechanical properties, hardness, technological properties,physical properties, equivalent steels, specification of grey cast iron grade SCH30, СЧ30.

Grade:

SCH30  ( СЧ30 )

Classification:

Gray cast iron

 

Chemical composition in % for grade SCH30 (СЧ30)

C

Si

Mn

S

P

3-3.2

1.3-1.9

0.7-1

max 0.12

max 0.2

 

Mechanical properties under Т=20oС for grade SCH30 ( СЧ30)

Assortment

Dimension

Direct

sB

sT

d5

y

KCU

Heat treatment

-

mm

-

MPa

MPa

%

%

KJ/m2

-

Casting,GOST1412-85

 

 

300

 

 

 

 

 

 

Brinell hardness for SCH30 ( СЧ30 )          GOST 1412-85

HB 10 -1= 163 - 270   MPa

 

Technological properties of the material SCH30 (СЧ30 )

Linear shrinkage :

1.3   %

 

Physical properties for grade   SCH30  ( СЧ30 )

T

E 10- 5

a 10 6

l

r

C

R 10 9

Grade

MPa

1/Grade

Watt/(m·Grade)

kg/m3

J/(kg·Grade)

Ohm·m

20

1.3

 

46

7300

 

 

100

 

10.5

 

 

525

 

 

Equivalent steels for grade   SCH30   ( СЧ30 )

USA

-

No.45

 

Germany

DIN,WNr

GG30

Japan

JIS

 

FC300

France

AFNOR

Ft30

FGL300

England

BS

300

Italy

UNI

G30

Belgium

NBN

FGG30

Spain

UNE

FG30

China

GB

HT300

Sweden

SS

0130-00

O130

Poland

PN

Z130

ZI300

Czechia

CSN

422430

Austria

ONORM

GG30

GG300

Inter

ISO

300

Taiwan

-

FC300

COPANT

COPANT

FG300

 

Specification:

Mechanical properties:
sв - Tensile strength, [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture [%] 
y - Reduction of area, [%] 
KCU - Impact strength, [kJ/ m2
HB - Brinell hardness, [MPa] 

Physical properties:
T - Test temperature, [Grade] 
E
- Young modulus, [MPa] 
a - Coefficient of linear expansion (range 20o - T) , [1/Grade]
l - Termal (heat) condition coefficient, [Watt/(m·Grade)]
r - Density, [kg/m3]
C - Specific heat (range 20o - T), [J/(kg·Grade)]
R - Electrical resistance, [Ohm·m]

 

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