M35
Standard
ASTM A600
Hardness
Annealed ≤269HB, Q&T HRC64-67
Introduction
Cobalt-bearing HSS with 4.5-5.0% Co addition for significantly improved red hardness and elevated temperature wear resistance. For high-speed cutting and difficult-to-machine materials. Quenching at 1180-1220°C.
Applications
High-speed cutting tools, difficult-to-machine material tools, high-temp environment dies, precision gear cutting tools.
Chemical composition
| Element | Min | Max | Unit | Note |
|---|---|---|---|---|
| C | 0.82000 | 0.92000 | % | — |
| Si | 0.20000 | 0.45000 | % | — |
| Mn | 0.15000 | 0.40000 | % | — |
| Cr | 3.75000 | 4.50000 | % | — |
| Mo | 4.50000 | 5.50000 | % | — |
| W | 5.50000 | 6.50000 | % | — |
| V | 1.75000 | 2.20000 | % | — |
| Co | 4.50000 | 5.00000 | % | — |
A dash means not provided, not zero. Confirm specifications before ordering.