40CrNi A40402 - GB /T 3077-2015

40CrNi Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.37	0.17	0.5	-	-	0.45	1	-	-
Maximum Value	0.44	0.37	0.8	0.03	0.03	0.75	1.4	0.3	0.1

40CrNi 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	≥980	≥785	≥10	≥45	≤241	≥55

1 Approximate Comparison Table structural alloy steel

2 Approximate Comparison Table structural alloy steel

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

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