COLD WORK TOOL STEEL O-1
Chemical Composition
Element | Min | Max |
|---|---|---|
| Carbon, C | 0.90 | 1.05 |
| Manganese, Mn | 1.00 | 1.20 |
| Silicon,Si | 0.15 | 0.35 |
| Molybdenum, Mo | -- | -- |
| Chromium,Cr | 0.50 | 0.70 |
| W | 0.50 | 0.70 |
| V | 0.05 | 0.15 |
| Co | -- | -- |
Physical Properties
Properties | Metric | Imperial |
|---|---|---|
| Density (hardened to 62 HRC) | 7.81 g/cm 3 | 0.282 lb/in 3 |
| Density (@399°C/ 750°F, hardened to 62 HRC) | 7.70 g/cm 3 | 0.278 lb/in 3 |
| Density (@191°C/ 375°F, hardened to 62 HRC) | 7.75 g/cm 3 | 0.280 lb/in 3 |
| Melting point | 1421°C | 2590°F |
Mechanical Properties
Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell (soft annealed -delivery condition) | 190 | 190 |
| Hardness, Rockwell C (tempering temp 300-1200°F) | 34.0-64.0 | 34.0-64.0 |
| Elastic modulus (hardened to 62 HRC) | 193 GPa | 28000 ksi |
| Elastic modulus (@399°C/750°F, hardened to 62 HRC ) | 172 GPa | 25000 ksi |
| Elastic modulus (@191°C/375°F, hardened to 62 HRC) | 186 GPa | 27000 ksi |
| Compressive yield strength (0.2%, hardened to 50 HRC) | 1350 MPa | 196000 psi |
| Compressive yield strength (0.2%, hardened to 55 HRC) | 1800 MPa | 261000 psi |
| Compressive yield strength (0.2%, hardened to 60 HRC) | 2150 MPa | 312000 psi |
| Compressive yield strength (0.2%, hardened to 62 HRC) | 2200 MPa | 319000 psi |
Thermal Properties
Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal expansion | 10.6 x 10 -6 /ºC | 20-260 | - |
Features
Heat Treatment
Forging
Annealing
Martempering
Quenching
Hardening
Cold Work
Forming
