Tungsten carbide is a compound composed of tungsten and carbon. Its molecular formula is WC and its molecular weight is 195.85.
DESCRIPTION
Tungsten carbide is a compound composed of tungsten and carbon. Its molecular formula is WC and its molecular weight is 195.85. It is a black hexagonal crystal with metallic luster and similar hardness to diamond. It is a good conductor of electricity and heat. Tungsten carbide is insoluble in water, hydrochloric acid and sulfuric acid, but easily soluble in the mixed acid of nitric acid and hydrofluoric acid. Pure tungsten carbide is fragile, if a small amount of titanium, cobalt and other metals are added, the brittleness can be reduced. Tungsten carbide, which is used as steel cutting tool, is often added with titanium carbide, tantalum carbide or their mixture to improve the antiknock ability. The chemical properties of WC are stable. Tungsten carbide powder is used in cemented carbide production.