50Х - GOST 4543-1971

Grade	50Х
Corresponding Standard	GOST 4543-1971 Alloyed Construction Steel Specifications
Classification	Alloy Steel
Properties	High Hardenability

50Х Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.46	0.17	0.5	-	-	0.8	-	-
Maximum Value	0.54	0.37	0.8	0.035	0.035	1.1	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		Japan	United States		France	Russia
GB	ISC	JIS	ASTM/AISI	UNS	NF EN/NF	GOST
50Cr	A20502	SCr445	5150	G51500	50C4	50Х

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