Cutting tools made of High-Speed Steel (HSS) achieve high hot hardness, wear resistance and fracture resistance at a hardness of over 60 to 67 HRC through hardening and tempering. The main alloying elements are Carbon, Tungsten, Molybdenum, Vanadium, Cobalt and Chromium. The high contents of carbide-forming elements lead to the formation of wear-resistant carbides in the microstructure of HSS.
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