High Alloyed Spring Steel 51CrV4

High alloyed spring steel 51CrV4

51CrV4 Introduction: 51CrV4 is a kind of advanced spring, with good mechanical properties and process properties, high hardenability, adding vanadium to refine the grain of steel, reduce overheating sensitivity, improve strength and toughness, with high fatigue strength, yield ratio is also high, but poor weldability, low cold deformation plasticity, Used as a large section of high-load springs and operating temperature <300 ℃ valve springs, piston springs, safety valve springs.

Product Specification:

51CrV4 Corresponding brand: 1.8159

51CrV4 standard: EN 10083-3:2006

51CrV4 Chemical composition:

Carbon C: 0.47 ~ 0.55

Silicon Si: ≤0.40

Manganese Mn: 0.70 ~ 1.10

Sulfur S: ≤0.030

P: ≤0.030

Chromium Cr: 0.90 ~ 1.20

Nickel Ni: ≤0.35

Copper Cu: ≤0.25

Vanadium: 0.10 ~ 0.25

51CrV4 Mechanical properties:

Tensile strength σb(MPa) : ≥1274(130)

Yield strength σs(MPa) : ≥1127(115)

Elongation δ5(%) : ≥10

Section shrinkage ratio ψ(%) : ≥40

Hardness: hot rolling, ≤321HB; Cold drawing + heat treatment, ≤321HB

51CrV4 Heat treatment: quench 850℃±20℃, oil cold; Tempering 500℃±50℃(for special needs, ±30℃).

Complete Processing Capability:

Product Application:

Product Quality Testing:

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