55SiCrV A28553 - GB /T 1222-2025

55SiCrV Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	V
Minimum Value	0.51	1.2	0.5	-	-	0.5	-	-	0.1
Maximum Value	0.59	1.6	0.8	0.025	0.02	0.8	0.35	0.2	0.2

55SiCrV 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 860±20°C and tempered at 400±50°C	≥1650	ReL ≥1600	≥5	≥35

Approximate Comparison Table Spring Steel 1

55SiCrV Corresponding Standards(Same grade name, different standards)

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