40Г2 - GOST 4543-1971

Grade	40Г2
Corresponding Standard	GOST 4543-1971 Alloyed Construction Steel Specifications
Classification	Alloy Steel
Properties	High Hardenability

40Г2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.36	0.17	1.4	-	-	-	-	-
Maximum Value	0.44	0.37	1.8	0.035	0.035	0.3	0.3	0.3

• The letter A at the end of the grade stands for “high quality steel”. Character III means “Extra high quality steel”. For example, quality steel -30XΓC; High quality steel -30XΓCA; Extra high quality steel -30X ΓC-Ⅲ and 30XΓCA-Ⅲ.

Approximate Comparison Table Structural Alloy Steel

China		Taiwan, China	Japan	South Korea	United States		International Organization for Standardization	France	European Standard		Russia
GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	ISO	NF EN/NF	EN	Numerical Grade	GOST
40Mn2	A00402	SMn438	SMn438 SMn443	SMn438	1340	G13400	42Mn6	40M5	42Mn6	1.1055	40Г2

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!