The application of different hardness carbide carbide has high hardness and wear resistance, commonly used in the manufacture of metal cutting tools, measuring tools, such as mold. Usually when high hardness, high wear resistance; high bending strength, impact toughness is also high. However, the higher the hardness, bending strength and toughness of its lower. High-speed steel for high bending strength and impact toughness, and good processability, is still the most widely used tool material, followed by carbide. There is a hard alloy carbide is one or several (such as TiC, WC, etc.) for the hardening phase, the alloy steel (such as high-speed steel, molybdenum chrome steel, etc.) powder as the binder made of steel called carbide. The hardness range between steel and carbide, but the toughness and can greatly improve the machining and heat treatment processing. This typical hardness of steel alloy: quenching - tempering hardness of 69 ~ 73HRC, high-speed steel 65%.