Cast Tungsten Carbide (CTC ) is a so-called cast and crushed tungsten carbide. It is of irregular particle shape . CTC is an eutectic mixture of mono tungsten carbide (WC) and di-tungsten carbide (W2C). Average carbon content is generally between 3.8 and 4.2 wt.-%, which translates into 73 - 80 wt.-% W2C and 20 - 27 wt.-% WC. CTC particles have a very fine internal structure (“feather structure”), resulting in very high hardness values.
Blends of CTC with alloy powders based on Ni, Fe or Co are used to produce superior wear protectioning coatings by PTA welding, lasercladding or other wear protective welding applications. Examples are conveyor screws, fan blades, wear plates, excavator bucket teeth and crusher jaws. Furthermore, CTC can be used for the production of drill bits.