24 July 2021 Mould Steel Bar
Cr8Mo2SiV Mould Steel Bar
Cr8Mo2SiV high-carbon chromium-type cold work tool steel, SKD11 high-carbon high-chromium high-chromium ledeburite cold work tool steel design and development based on the new tool steel, which is characterized by reduced carbon and chromium content to inhibit the total The formation of crystal, M7C3 carbide fine uniform small amount of precipitation, improve plasticity and toughness, access to excellent ductility - toughness. The steel is martensitic steel with a small amount of excess primary carbides. At the same time, the steel increases the content of Mo and can be hardened and tempered at a higher temperature than SKD11. Pan Chang-steel using EF + LF + VD smelting 3t ingot → blooming → rolling flat steel process route to try Cr8Mo2SiV.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V(％) |
|---|---|---|---|---|---|---|---|
| 0.90～1.05 | 0.80～1.10 | 0.20～0.50 | ≤0.030 | ≤0.015 | 7.50～8.40 | 1.80 ~ 2.10 | 0.20～0.30 |
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) |
|---|---|---|---|---|---|---|
| ≥ 862(85) | ≥ 1282(100) | ≥ 78 | ≥ 12 | ≥ 55 | ≥ 98 | ≤ 363 |