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=20^oС for grade SCH30 ( СЧ30)

Assortment	Dimension	Direct	s_B	s_T	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 10⁶	l	r	C	R 10⁹
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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