BÖHLER S500 ISORAPID – "The fireproof one" In the family of conventional high-speed steels, this alloy combines excellent cutting properties with very good hot hardness.
| Compressive strength | Grindability | Red hardness | Toughness | Wear resistance |
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| DIN | EN | Others |
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| 1.3247 | HS2-9-1-8 | AISI: M42 |
| C | Si | Mn | Cr | Mo | V | W | Co | |
|---|---|---|---|---|---|---|---|---|
| 1.10 | 0.50 | 0.20 | 3.90 | 9.20 | 1.00 | 1.40 | 7.80 |
