30W4Cr2V A27303 - GB /T 1222-2025

30W4Cr2V Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	W	V
Minimum Value	0.26	0.17	-	-	-	2	-	-	4	0.5
Maximum Value	0.34	0.37	0.4	0.025	0.02	2.5	0.35	0.2	4.5	0.8

30W4Cr2V Mechanical Properties

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 %
Quenched in oil at 1075±20°C and tempered at 600±50°C	≥1470	ReL ≥1325	≥7	≥40

Approximate Comparison Table Spring Steel

30W4Cr2V Corresponding Standards(Same grade name, different standards)

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