18Cr2Ni4WA - GJB 1951-1994

Grade	18Cr2Ni4WA
Corresponding Standard	GJB 1951-1994 Specification for quality structure steel bars for avication
Classification	Alloy Steel

18Cr2Ni4WA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu ^*	Mo ^*	Ti ^*	W	V ^*
Minimum Value	0.13	0.17	0.25	-	-	1.35	4	-	-	-	0.8	-
Maximum Value	0.19	0.37	0.55	0.025	0.025	1.65	4.5	0.25	0.15	0.03	1.2	0.05

18Cr2Ni4WA Mechanical Properties

diameter d mm	Mark	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		Tempering					197~269
Longitudinal specimen d=16①	ⓐ	Double Quenching and Tempering	≥1030	≥785	≥12	≥50	321~388	≥94
Transverse sample d=16①	ⓐ	Double Quenching and Tempering	≥925	≥705	≥6	≥30	-	≥47
Longitudinal specimen d=16①	ⓑ	Double Quenching and Tempering	≥1130	≥835	≥11	≥45	341~401	≥78
Transverse sample d=16①	ⓑ	Double Quenching and Tempering	≥1020	≥750	≥5.5	≥27	-	≥39
Longitudinal sample d=16②	Pre-normalizing allowed	Quenching 950°C±10°C air cooling, Tempering 150~170°C air cooling	≥1180	≥885	≥9	≥35	352~401	≥71
Longitudinal sample d=16②	Pre-normalizing allowed	Quenching 850°C~860°C air cooling, Tempering 150~170°C air cooling	≥1130	≥835	≥10	≥40	341~388	≥86

18Cr2Ni4WA Corresponding Standards(Same grade name, different standards)

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