40Cr3MoV A31401 - GB /T 37618-2019

40Cr3MoV Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
Minimum Value	0.36	0.17	0.4	-	-	3	-	-	0.8	0.15
Maximum Value	0.43	0.37	0.7	0.03	0.03	3.5	0.3	0.3	1.1	0.25

40Cr3MoV Mechanical Properties

test size 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 temperature 870~970°C, oil or water quenching; tempering temperature 580~700°C, water or oil quenching	≥950	≥750	≥11	Normalizing + Tempering, Annealing or High Temperature Tempering Condition Delivered Steel Rod ≤248	≥25

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