G40320 - ASTM A29/A29M-2023

USA UNS	G40320
AISI American Iron and Steel Institute	4032
Corresponding Standard	ASTM A29/A29M-2023 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 ^②	Ni ^②	Cu ^②	Mo
Minimum Value	0.3	0.15	0.7	-	-	-	-	-	0.2
Maximum Value	0.35	0.35	0.9	0.035	0.04	0.2	0.25	0.35	0.3

① Silicon may be specified by the purchaser as 0.10 % maximum. The need for 0.10 % maximum generally relates to severe cold-formed parts.
② Residual elements.
③Standard alloy steels can be produced with a lead range of 0.15 % to 0.35 %. Such steels are identified by inserting the letter \"L\" between the second and third numerals of the AISI number, for example, 41L40. A cast or heat analysis is not determinable when lead is added to the ladle stream.

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