42CrMoA A30423 - GB /T 20410-2006

Grade	42CrMoA
China ISC	A30423
Corresponding Standard	GB /T 20410-2006 Steels for turbine bolts at high temperature
Classification	Alloy Steel
Properties	Strength High-Temperature Strength Impact Toughness Fatigue Resistance Quench Hardness

42CrMoA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.38	0.17	0.5	-	-	0.9	-	-	0.15
Maximum Value	0.45	0.37	0.8	0.025	0.025	1.2	0.3	0.25	0.25

42CrMoA Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
d=25	Quenching + Tempering	≥795	≥655	≥16	HBW10/3000 241~302	≥50
	High Temperature Tempering				≤217

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

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