4150 - ASTM A866-2014

Grade	4150
Corresponding Standard	ASTM A866-2014 Medium Carbon Anti-Friction Bearing Steel
Classification	Bearing Steel

4150 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo	Al	O
Minimum Value	0.48	0.15	0.75	-	-	0.8	-	0.15	-	-
Maximum Value	0.53	0.35	1	0.025	0.025	1.1	0.3	0.25	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	International Organization for Standardization	Germany		European Standard		United Kingdom
GB	JIS	ASTM	ISO	W-Nr.	L-Nr.	EN	Numerical Grade	BS EN/BS
50CrMo	SCM445	4150	50CrMo4	50CrMo4	1.7228	50CrMo4	1.7228	708M40 708M50

4150 Corresponding Standards(Same grade name, different standards)

1	ASTM A29/A29M-2012
	4150 G41500
2	SAE J404-2000
	4150 G41500
3	ASTM A29/A29M-2020
	4150 G41500
4	ASTM A866-2014
	4150

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