42CrMoA - DL /T 439-2018

Grade	42CrMoA
Corresponding Standard	DL /T 439-2018 The technical guide for high-temperature bolt of fossil-fired power plant
Classification	Alloy Steel

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

condition	Test Temperature	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
Bolt Material (>64mm)	Room Temperature	≥790	≥660	≥16	≥50	241~302	Ku ≥50

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

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