24 July 2021 Spring Steel Wire
50CrV4 Spring Steel Bar
50CrV4 is a German standard spring steel, equivalent to Chinese GB 50CrVA. 50CrV4 spring steel has good mechanical properties and process performance, high hardenability, adding vanadium to refine the grain of the steel, reduce overheating sensitivity, improve strength and toughness, have high fatigue strength, and have a high yield ratio. , But poor weldability and low cold deformation plasticity. It is a higher-grade spring, used as a high-load important spring with a larger section and a valve spring, piston spring, safety valve spring, etc. with an operating temperature of <300 ℃.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(%) | V(%) |
|---|---|---|---|---|---|---|---|---|
| 0.46-0.54 | 0.17-0.37 | 0.50-0.80 | ≤0.030 | ≤0.030 | 0.80-1.10 | ≤0.35 | ≤0.25 | 0.10-0.20 |
Mechanical Properties：
| Tensile Strength σb (MPa): | Yield Strength σ0.2 (MPa): | Elongation δ5 (%): | Reduction of area ψ (%): | Hardness: |
|---|---|---|---|---|
| ≥ 1274 (130) | ≥1127 (115) | ≥ 10 | ≥25 | Max. 280HB |
Equivalent:
American grade: G61500
Japanese grade: SUP10
China GB grade: 50CrVA
British grades: 735A51
French grade: 50CrV4