Chemical formula WC. The full name of Wolfram Carbide, 
 Black hexagonal crystals with metallic luster, hardness and diamond similar to electricity, a good conductor of heat. Melting point 2870 ℃, boiling point 6000 ℃, relative density of 15.63 (18 ℃). WC does not dissolve in water, hydrochloric acid and sulfuric acid, soluble in nitric acid - a mixture of hydrofluoric acid. Pure tungsten carbide fragile, if mixed with a small amount of titanium, cobalt and other metals, can reduce the brittleness. The tungsten carbide cutting tools for steel, often by adding titanium carbide, tantalum carbide, or mixtures thereof, in order to improve anti-knock capabilities. The chemical stability of tungsten carbide. 
 In tungsten carbide, the carbon atoms embedded in the space lattice of tungsten metal, does not destroy the original metal lattice, the formation of interstitial solid solution, therefore, also known as interstitial (or insert) compounds. Tungsten carbide and carbon by heating a mixture obtained by temperature, the presence of hydrogen or hydrocarbons can accelerate the reaction. If the oxygen-containing compounds with tungsten preparation, the product must ultimately be carried out in 1500 ℃ vacuum treatment to remove hydrocarbons. WC suitable for mechanical processing at high temperatures, can be made cutting tools, furnace structural materials, jet engines, gas turbines, nozzles, etc. 
 Another tungsten and carbon compounds for the two tungsten carbide, chemical formula for the W2C, melting point 2860 ℃, boiling point 6000 ℃, relative density of 17.15. Its nature, system, method, use with tungsten carbide 

 Tungsten, also known as carbide, the hardness second only to diamond, it is chemically stable, even in heated situations, is not and hydrochloric acid, sulfuric acid play a role, even in the king will not be dissolved in water. Tungsten temperature, known as nature's most insoluble of the metal, the melting point up to 3410 ℃; hardness also among the best in metal, only heated to high temperatures, in order to pressure processing. Our production of tungsten steel balls are widely used in water meter, flow meter area!