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