30Г - GOST 4543-1971

Grade	30Г
Corresponding Standard	GOST 4543-1971 Alloyed Construction Steel Specifications
Classification	Alloy Steel
Properties	High Hardenability

30Г Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.27	0.17	0.7	-	-	-	-	-
Maximum Value	0.35	0.37	1	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.

1 Approximate Comparison Table High-Quality Carbon Structural Steel

China		United States		Germany		France	Russia	United Kingdom
GB	ISC	ASTM/AISI	UNS	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
30Mn	U21302	1033	G10330	30Mn4	1.1146	32M5	30г	080A30

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China	Japan	United States	France	European Standard		Russia	United Kingdom
GB	JIS	ASTM/AISI	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
30Mn (GB/T 699-1999)	SWRCH30K	1033 1030	XC32	C30	1.0528	30Г	080A30

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