Chunbao tungsten steel K100 WC%: 94 Hardness HRA: 92.2 Impact strength: 0.23 Flexural strength MPa: 360 Gravity: 14.83 Particle size: ultrafine particles of 0.8-1.0 applications: PCB micro-diameter drill bits, carbide milling many special tungsten steel difficult to decompose under high temperature materials, antioxidant capacity than its component metal strong. In all carbides TiC best thermal stability is a very important metal carbide. However, in an oxidizing atmosphere, all the carbides are easily oxidized at high temperatures, can be said that this is a major weakness carbide. Addition to carbon atoms, nitrogen atoms, boron atoms can enter the gap in the metal lattice, the solid solution is formed between the charge. They mesenchymal carbides are similar in nature, can be conductive, thermal conductivity, high melting point, hardness, and brittleness is also large.