40CrNi2Mo A50400 - GB /T 3077-2015

40CrNi2Mo Chemical Element Composition Content (%)

Component	C	Si	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.38	0.17	-	-	0.7	1.65	-	0.2
Maximum Value	0.43	0.37	0.03	0.03	0.9	2	0.3	0.3

40CrNi2Mo 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	Normalizing + Quenching + Tempering	≥1050	≥980	≥12	≥45	≤269	≥48
sample	Normalizing + Quenching + Tempering	≥1790	≥1500	≥6	≥25	≤269	-

Approximate Comparison Table Structural Alloy Steel

40CrNi2Mo Corresponding Standards(Same grade name, different standards)

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