G41200 - ASTM A29M UNS-2012

USA UNS	G41200
ASTM Specification or Grade	4120
Corresponding Standard	ASTM A29/A29M-2012 Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Classification	Alloy Steel

Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	Cr	Ni ^②	Cu ^②	Mo	More
Minimum Value	0.18	0.15	0.9	-	-	0.4	-	-	0.13	③
Maximum Value	0.23	0.35	1.2	0.035	0.04	0.6	0.25	0.35	0.2	③

Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China	Japan	United States	International Organization for Standardization
GB	JIS	ASTM	ISO
ML20CrMo	SCM420	4120	20CrMo4

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