1. High hardness (up to Mohs 9), capable of withstanding large cutting forces.
2. Good wear resistance and long service life (usually between 1000 and 3000 hours).
3. Small thermal expansion coefficient, good heat shock resistance.
4. Stable chemical properties, insoluble in acid and alkali solutions, and good corrosion resistance.
5. Not deformed at high temperatures;
6. Low noise and low vibration during cutting.