Cobalt-tungsten carbide is the main component of tungsten carbide (WC) and binder cobalt (Co), whose trademark is "YG" ("hard, cobalt" pinyin word prefix) and the average percentage of cobalt components.For example, YG8, represents the average WCo = 8%, the balance being tungsten carbide cobalt tungsten carbide. ② main ingredient is tungsten, titanium, cobalt tungsten carbide, titanium carbide (TiC), and cobalt. The grade of "YT" ("hard titanium" pinyin word prefix) and the average content of titanium carbide composition. For example, YT15, represents the average WTi = 15%, the remainder being tungsten carbide and titanium carbide cobalt cobalt content. ③ Tungsten Titanium Tantalum (Niobium) is the main component of tungsten carbide, titanium carbide, tantalum (or niobium carbide), and cobalt. Such carbide or carbide, also known as generic universal carbide. The grade of "YW" ("hard", "000" prefix word Pinyin) plus sequence number composed as YW1.