A837 4320 G43200 - ASTM A837/A837M-2017(R2022)

Grade	A837 4320
USA UNS	G43200
Corresponding Standard	ASTM A837/A837M-2017(R2022) Standard Specification for Steel Forgings, Alloy, for Carburizing Applications
Classification	Alloy Steel

A837 4320 Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.17	0.15	0.45	-	-	0.4	1.65	-	0.2
Maximum Value	0.22	0.35	0.65	0.035	0.04	0.6	2	0.35	0.3

① When vacuum carbon deoxidation is used, silicon maximum shall be 0.10 %

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