D2 Tool Steel (D2)
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Basic Properties
| Alloy Type | |
|---|---|
| Designation | D2 |
| Density | 7.7 g/cm³ |
| Melting Point | 1420-1460°C |
Composition
| Element | Percentage |
|---|
Similar Alloys
Description
A high-carbon, high-chromium air-hardening tool steel with excellent wear resistance and dimensional stability
| Density | 7.7 g/cm³ |
|---|---|
| Electrical Resistivity | 95 μΩ·cm |
| Tensile Strength | 1520-2070 MPa |
|---|---|
| Yield Strength | 1380-1720 MPa |
| Elongation | 2-8% |
| Hardness | 450-650 HV |
| Machinability | Good machinability in annealed condition. Requires carbide tools when hardened. |
| Melting Point | 1420-1460°C |
|---|---|
| Thermal Conductivity | 19 W/(m·K) |
| Thermal Expansion | 11.2 × 10⁻⁶/°C |
| Heat Treatment | Annealing at 870-900°C, hardening at 1010-1030°C, tempering at 150-540°C |
| Heat Treatment | Annealing at 870-900°C, hardening at 1010-1030°C, tempering at 150-540°C |
|---|---|
| Corrosion Resistance | Moderate corrosion resistance due to chromium content. Better than carbon tool steels. |
Applications
Stamping dies, blanking dies, forming tools, shear blades, punches, industrial knives
History
Developed for improved wear resistance and air hardening capability.