40CrNiWA - GJB 1951-1994

Grade	40CrNiWA
Corresponding Standard	GJB 1951-1994 Specification for Quality Structure Steel Bars for Avication
Classification	Alloy Steel

40CrNiWA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^*	Mo	Ti ^*	W	V ^*
Minimum Value	0.37	0.17	0.4	-	-	0.6	1.25	-	0.15	-	0.8	-
Maximum Value	0.44	0.37	0.8	0.025	0.025	0.9	1.75	0.25	0.25	0.03	1.2	0.05

40CrNiWA 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
Steel Rod	Annealed or Normalized + Tempered					170~269
Longitudinal specimen d=25①	Quenching at 850±10°C, oil cooling, tempering at 550~650°C ⓐ water or air cooling	≥980	≥835	≥12	≥55	293~341	≥78
Longitudinal specimen d=25①	Quenching at 850±10°C, oil cooling, tempering at 550~650°C ⓐ water or air cooling	≥1080	≥930	≥12	≥50	321~375	≥63

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

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!