15Х - GOST 4543-1971

Grade	15Х
Corresponding Standard	GOST 4543-1971 Alloyed Construction Steel Specifications
Classification	Alloy Steel
Properties	Quench Hardness

15Х Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.12	0.17	0.4	-	-	0.7	-	-
Maximum Value	0.18	0.37	0.7	0.035	0.035	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.

1 Approximate Comparison Table Structural Alloy Steel

China		Taiwan, China	Japan	South Korea	United States		Germany		France	Russia	United Kingdom
GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
15Cr	A20152	SCr415	SCr415	SCr415	5115	G51150	15Cr3	1.7015	12C3	15Х	523A14 523M15

2 Approximate Comparison Table Hardenability Guaranteed Structural Steel

China		Taiwan, China	Japan	South Korea	Germany		France	Russia	United Kingdom
GB	ISC	CNS	JIS	KS	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
15CrH	A20155	SCr415H	SCr415H	SCr415H	17Cr3	1.7016	17Cr3	15Х	17Cr3 (655M13)

3 Approximate Comparison Table Cold Heading Steel

China		United States		Germany		Russia
GB	ISC	ASTM/AISI	UNS	DIN EN/DIN	W-Nr.	GOST
ML15Cr	A20154	5115	G51150	15Cr2	1.7015	15Х

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