1. High hardness and wear resistance. Generally, between HRA86 ~ 93, decreases with an increase in cobalt.
2. Thermohardening. Under the temperature of 500°C is basically unchanged and there is still a high hardness at 1000°C.
3. High anti-bending strength. The bending strength at normal temperature is between 90 and 150 MPa and the higher the cobalt, the higher the anti-bending strength.
4. More stable chemical properties.
Carbide material has acid-resistance, alkali-resistant, and even significantly oxidation even at high temperatures.
5. High thermal conductivity. Cemented carbide has higher thermal conductivity than that of high-speed steel, which increases with the increase of cobalt.
6. The coefficient of thermal expansion is relatively small. It is lower than high-speed steel, carbon steel and copper, and increases with the increase in cobalt.
Performance of tungsten carbide
