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Forum Technology Interest Group Erpe-Mere
Performance of tungsten carbide - Afdrukversie

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+--- Discussie: Performance of tungsten carbide (/showthread.php?tid=871)

Performance of tungsten carbide - YSmarines - 09-13-2021

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.