40CrNiMo - JB /T 6396-2006

Grade	40CrNiMo
Corresponding Standard	JB /T 6396-2006 Specification for the heavy alloy structural steel forings
Classification	Alloy Steel

40CrNiMo Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.37	0.17	0.5	-	-	0.6	1.25	-	0.15
Maximum Value	0.44	0.37	0.8	0.035	0.035	0.9	1.65	0.2	0.25

40CrNiMo Mechanical Properties

	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
≤80	Quenching + Tempering	≥980	≥835	≥12	≥55	295~341	≥78
81~100	Quenching + Tempering	≥980	≥835	≥11	≥50	295~341	≥74
101~150	Quenching + Tempering	≥980	≥835	≥10	≥45	295~341	≥70
151~250	Quenching + Tempering	≥980	≥835	≥9	≥40	295~341	≥66

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

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