40CrMnMo - JB /T 6396-2006

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

40CrMnMo Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.37	0.17	0.9	-	-	0.9	-	-	0.2
Maximum Value	0.45	0.37	1.2	0.035	0.035	1.2	0.3	0.2	0.3

40CrMnMo 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
≤100	Tempering	≥885	≥735	≥12	≥45	269~321	≥39
101~300	Tempering	≥835	≥640	≥12	≥42	250~302	≥39
301~500	Tempering	≥785	≥570	≥12	≥40	235~286	≥31
501~800	Tempering	≥735	≥490	≥12	≥35	217~269	≥23

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

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