24 July 2021 Spring Steel Wire
52CrMoV4 Spring Steel Bar
52CrMoV4 is a springsteel suitable for quenching and tempering, used in e.g. leaf springs and other vehicle springs.The strength and hardenability of 52CrMoV4 steel is strengthened not only by chromium and vanadium - as in the case of 52CrV4 / AISI 6150, but also by molybdenum. Molybdenum strengthens the solution during heat treatment, while chromium and vanadium form carbides that improve the hardness of the material during tempering.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V(%) |
|---|---|---|---|---|---|---|---|
| 0.48-0.56 | 0.5-0.40 | 0.70-1.00 | 0.035 | 0.035 | 0.90-1.20 | 0.15-0.25 | 0.07-0.12 |
Mechanical Properties：
| Tensile Strength σb (MPa): | Yield Strength σ0.2 (MPa): | Elongation δ5 (%): | Section shrinkage ψ (%): | Impact (ISO-V) strengthmin |
|---|---|---|---|---|
| ≥ 1274 (130) | ≥1176 (120) | ≥ 6 | ≥35 | 20 °C 10 J (long) |
Physical Properties:
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν |
|---|---|---|---|---|---|---|---|
| 31 | - | - | 0.11 | - | |||
| 395 | 595 | - | 32.3 | 222 | - | ||
| 529 | - | 14 | 12.2 | 332 | 243 |
51CrMoV4 Technical Data Sheet PDF