5140 - ASTM A866-2014

Grade	5140
Corresponding Standard	ASTM A866-2014 Medium Carbon Anti-Friction Bearing Steel
Classification	Bearing Steel

5140 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Al	O
Minimum Value	0.38	0.15	0.7	-	-	0.7	-	-	-
Maximum Value	0.43	0.35	0.95	0.025	0.025	0.9	0.3	0.05	0.002

Note1: Elements not quoted shall not be intentionally added to the steel without the agreement of the purchaser
Note2: Intentional additions of calcium or calcium alloys for deoxidation or inclusion shape control are not permitted unless specifically approved by the purchaser
Note3: Oxygen content applies to product analysis and shall be determined in accordance with Test Methods E1019.

Approximate Comparison Table Structural Alloy Steel

China	Japan	United States	France	Russia	United Kingdom
GB	JIS	ASTM	NF EN/NF	GOST	BS EN/BS
38CrA	SCr440H	5140	38C4	38ХА	530A40

5140 Corresponding Standards(Same grade name, different standards)

1	ASTM A29/A29M-2012
	5140 G51400
2	ASTM A29/A29M-2005
	5140 G51400
3	SAE J404-2000
	5140 G51400
4	ASTM A29/A29M-2020
	5140 G51400
5	ASTM A866-2014
	5140
6	ASTM A519/A519M-2024
	5140
7	ASME SA-29/SA-29M-2023
	5140 G51400

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