24 July 2021 Mould Steel Bar
W303 Mould Steel Bar
W303 steel is a kind of hot work die steel with high temperature wear resistance. W303 steel has extremely strong strength at high temperature, good crack resistance, high thermal tensile strength, good tempering stability and hardenability. , Heat treatment deformation is small, suitable for copper and aluminum alloy hot work molds.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | V(％) | Mo(％) |
|---|---|---|---|---|---|---|---|
| 0.38～0.43 | 0.15～0.30 | 0.20～0.50 | ≤0.030 | ≤0.030 | 4.50 ~ 5.50 | 0.30 ~ 0.60 | 2.10 ~ 3.00 |
Mechanical Propoerties:
| Yield Strength Rp0.2(MPa) | Tensile Strength Rm(MPa) | Impact Energy AKV(J) | Elongation at Fracture A(%) | Reduction in Cross Section on Fracture Z(%) | Impact toughness value αkv (J/cm2) | Hardness(Brinell) |
|---|---|---|---|---|---|---|
| ≥ 780(85) | ≥ 980(100) | ≥ 78 | ≥ 12 | ≥ 55 | ≥ 98 | ≤ 321 |
W303 Steel Freature:
- the characteristics of mold steel Austrian Bailu standard steel, high temperature wear hot work die steel, high-temperature strength, anti-cracking performance, with high thermal tensile strength, tempering stability, hardenability Very good, heat treatment deformation is small, suitable for copper, aluminum alloy with the hot die.
- supply status and hardness of the annealing state, hardness ≤ 235HBS.
- Typical chemical composition (mass fraction,%) C 0.39, Cr 5.00, Mo 2.90, Mn 0.30, V 0.55, Si 0.25.
- reference to the corresponding German DIN standard material number 1.2367ESR, Germany KIND & CO standard steel RPU, Austria Bailu BOHLER standard steel W303.
- ordinary quenching, tempering quenching temperature of 1030 ~ 1080 ℃, oil or gas cooling quenching, tempering temperature 400 ℃ / 500 ℃ / 600 ℃ / 700 ℃, hardness 52HRC / 54HRC / 50HRC / 35HRC.
- Typical application examples
- suitable for high-demand alloy die-casting mold.
- extrusion dies, hot die.