G43400 - ASTM A29/A29M-2012

USA UNS	G43400
AISI American Iron and Steel Institute	4340
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	Cu ^②	Mo	More
Minimum Value	0.38	0.15	0.6	-	-	0.7	1.65	-	0.2	③
Maximum Value	0.43	0.35	0.8	0.035	0.04	0.9	2	0.35	0.3	③

1 Approximate Comparison Table structural alloy steel

2 Approximate Comparison Table structural alloy steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
34CrNi3Mo 34CrNiMo ZG34CrNiMo	SNCM447	4340	36CrNiMo6	34CrNiMo6 GS-34CrNiMo6V	35NCD6	34CrNiMo6	1.6582	36KH2N2MFA 38KH2N2MA 40KHN2MA	2541	817M40

3 Approximate Comparison Table cast steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
ZG34CrNiMo 34CrNi3Mo 34CrNiMo	SNCM447	4340	36CrNiMo6	GS-34CrNiMo6V 34CrNiMo6	35NCD6	34CrNiMo6	1.6582	36KH2N2MFA 38KH2N2MA 40KHN2MA	2541	817M40

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