42SiMn A10422 - GB /T 3077-2015

Grade	42SiMn
China ISC	A10422
Corresponding Standard	GB /T 3077-2015 Alloy structure steels
Classification	Alloy Steel
Properties	Strength Hardness Quench Hardness

42SiMn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.39	1.1	1.1	-	-	-	-	-	-
Maximum Value	0.45	1.4	1.4	0.03	0.03	0.3	0.3	0.3	0.1

42SiMn Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
d=25	Quenching + Tempering	≥885	≥735	≥15	≥40	≤229	≥47

Approximate Comparison Table structural alloy steel

42SiMn Corresponding Standards(Same grade name, different standards)

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