Spring Steel 51CrV4

Spring Steel 51CrV4 has good mechanical and process properties, high quenchability, can improve the particle size of steel, reduce sensitivity, improve strength and toughness, has high fatigue strength, and the yield ratio is also high, but low weldability, low weldability, low susceptibility, -deformation plasticity. As an important spring with high load, most of the valve springs, piston springs and safety valve springs with operating temperatures <300℃.

Chemical composition of 51CRV4

Carbon C: 0.47 ~ 0.55

Silicon SI: ≤0.40

Comic MN: 0.70 ~ 1.10

Sulfur S: ≤0.030

P: ≤0.030

Chomium CR: 0.90 ~ 1.20

Nicken NI: ≤0.35

Copper Copper: ≤0.25

V: 0.10 to 0.25

51CRV4 Mechanical properties

Tensile strength σb (MPA) : ≥1274 (130)

Symbol Strength σs (MPA) : ≥1127 (115)

ELM extension δ5 (%) : ≥10

Partial contraction) (%) : ≥40

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

51CRV4 Heat treatment

Extract 850±20℃, oil cooling; Restore 500°±50 ° C (±30 ° C for special needs).

Complete processing capability

Product Application

Product quality testing

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