Tungsten steel, carbide 
 Carbide is a high hardness of refractory metal carbides (WC, TiC) micron powder as the main ingredient, cobalt (Co) or nickel (Ni), molybdenum (Mo) as a binder, in a vacuum or hydrogen furnace reduction furnace in sintering of powder metallurgy products. 
 Carbide has high hardness, wear resistance, strength and toughness, heat resistance, corrosion resistance and a series of excellent performance, especially its high hardness and wear resistance, even at 500 ℃ temperature also remained unchanged , at 1000 ℃ still very high hardness. Carbide is widely used as tool materials, such as turning, milling, planer, drill, boring tool, etc., used for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult to machine materials. Now a new type of carbide cutting tools cutting the number of times equal to carbon steel. 
 Carbide can also be used to make drilling tools, mining tools, drilling tools, measuring gauges, wear parts, metal grinding, cylinder liner, precision bearings, nozzles, etc. 
 Carbide characteristics: high hardness (86 ~ 93HRA, equivalent to 69 ~ 81HRC); good hot hardness (up to 900 ~ 1000 ℃, maintained 60HRC); wear resistance. Carbide cutting tools than the high-speed steel cutting 4 to 7 times the tool life is 5 to 80 times. Manufacture of molds, gauges, alloy tool steel longer than 20 to 150 times higher. 50HRC be about cutting hard materials. 
 However, carbide brittleness, can not be cutting, hard tool made of the overall shape of the complex, often made of different shapes of blades, the use of welding, bonding, mechanical clamping and other methods or model installed in the cutter body using specific .