40CrNiMo A50402 - JB /T 6908-2020

Grade	40CrNiMo
	A50402
Corresponding Standard	JB /T 6908-2020 Steel forings for displacement compressors
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	0.03	0.03	0.9	1.65	0.2	0.25

40CrNiMo Mechanical Properties

thickness or diameter mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
≤ 160	Tempering	850	≥650	≥14	≥50	241~286	KU2：≥55
＞160~300	Tempering	784	≥588	≥12	≥40	241~286	KU2：≥45

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

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