15CrA - GJB 1951-1994

Grade	15CrA
Corresponding Standard	GJB 1951-1994 Specification for Quality Structure Steel Bars for Avication
Classification	Alloy Steel

15CrA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^*	Mo ^*	Ti ^*	W ^*	V ^*
Minimum Value	0.12	0.17	0.3	-	-	0.7	-	-	-	-	-	-
Maximum Value	0.17	0.37	0.6	0.03	0.03	1	0.4	0.25	0.15	0.03	0.2	0.05

15CrA Mechanical Properties

condition	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	Normalizing or Annealing					≤179
Longitudinal specimen d=16①	First quenching 860±10°C, second quenching 780~810°C oil quenching, tempering 150~170°C air cooling	≥590	≥390	≥15	≥50	170~302	≥71

15CrA Corresponding Standards(Same grade name, different standards)

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