When KD20 carbide has good toughness and wear resistance relative fitness is mainly used for wire, bar drawing processing mode is also suitable for cast iron, non-ferrous metals and their alloys and non-metallic materials, uneven surfaces and interrupted cutting roughing fine planing precision milling, general and deep hole drilling, reaming and production of woodworking tools and other purposes. With good toughness and wear resistance, with wire and pipe die stamping die parts, motor rotor, EI steel, LED wire frame stamping.