24 July 2021 Mould Steel Bar
95MnWCr5 Mould Steel Bar
95MnWCr5(EN) is cold work die mould steel, equivalent to AISI O1 tool steel. As the standard states, 95MnWCr5 steel is an alloy die steel with high hardenability. Due to the carbides formed by tungsten in steel, this steel has more excess carbides and higher hardness and wear resistance after quenching and low temperature tempering. In addition, tungsten also helps to preserve the fine grains, so that the steel obtains better toughness. Therefore, the cutting tool made of CrWMn steel has less chipping phenomenon and can better maintain the shape and size of the blade.
However, steel is more sensitive to the formation of carbide nets. The existence of this kind of nets will cause the tool blades to peel off, which will shorten the service life of the tools. Therefore, steel with carbide nets must be carried out according to its severity. Forging and normalizing. This kind of steel is used to make tools whose cutting edge does not heat up sharply during work and measuring tools and cutting tools that require no deformation during quenching, such as making knives, long taps, long reamers, special milling cutters, dies and other types of special purpose Tools, and cutting tools for soft non-metallic materials.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(％) | W(％) |
|---|---|---|---|---|---|---|---|---|
| 0.85～0.95 | ≤0.40 | 0.90～1.20 | ≤0.030 | ≤0.030 | 0.50～0.80 | ≤0.25 | ≤0.30 | 0.50 ~ 0.80 |
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 |
|---|---|---|---|---|---|---|
| ≥ 862(85) | ≥ 980(100) | ≥ 78 | ≥ 12 | ≥ 55 | ≥ 98 | ≤ 241 |
Heat treatment and microstructure specifications:
Heat treatment specifications: Quenching, 800 ~ 830 ℃ oil-cooled.
Delivery Status:
The steel is delivered in an annealed condition.