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Your cart is empty.HRC of HSS 6542 (W6Mo5Cr4V2)is 67~70. It is ideally designed for high production machine works in low and medium carbon steel, as well as non-ferrous material like aluminum, brass, bronze, and copper. And HSS 6542 has a good red-hardness and retains its cutting edge sharpness longer than other general purpose high speed steel. Its HRC retain 63~65 when the temperature reach 1112 F. HSS 6542 which has a melting point of 4724.6~4748 F. These bits will drill through the toughest steel like truck frames, stainless steel, farm implements, and more, very durable.
diego serrano
Reviewed in the United States on September 6, 2024
Worked great to make a keyway in a honda gx390 flywheel. Great seller also.
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