Tool Steel O1
Tool Steel O1
Oil-hardening tool steel for gauges, knives, punches, dies and general-purpose tooling requiring good machinability before heat treatment.
Representative Properties
- Typical tensile strength: 1,800 MPa
- Typical yield strength: 1,500 MPa
- Typical density: 7.85 g/cm³
- Typical hardness: 620 HB
- Standard: ASTM A681
Values are representative for the named grade and condition. Final design and procurement must use certified supplier data and the applicable standard.
Material properties
| Material name | Tool Steel O1 |
|---|---|
| Type | Carbon & Alloy Steel |
| Standard code | ASTM A681 |
| Tensile strength (MPa) | 1800 |
| Yield strength (MPa) | 1500 |
| Fatigue strength (MPa) | 600 |
| Elongation (%) | 2 |
| Hardness (Brinell) | 620 |
| Density (g/cm³) | 7.85 |
| Electrical resistivity (µΩ·in) | 24 |
| Thermal conductivity (W/m·K) | 31 |
| Melting range (°C) | 1420–1460 |
| Weldability | Poor |
| Formability | Poor |
| Shear modulus | 79 |
| Industry code | tool_steel_o1 |