HAP40
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HAP40, manufactured by Hitachi, is a powder-metal, high speed steel with high abrasion resistance and toughness. It is similar to CPM-M4, but with the addition of Cobalt.
HAP40 consists of:
| Carbon | Chromium | Cobalt | Copper | Manganese | Molybdenium | Nickel | Nitrogen | Phosphorus | Silicon | Sulfur | Tungsten | Vanadium |
| 1.30 | 4.00 | 8.00 | / | / | 5.00 | / | / | / | / | / | 6.00 | 3.00 |
