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 |
