We all know that cemented carbide is an alloy made of refractory tungsten carbide powder as the main component, plus a binder, and made by powder metallurgy. It is widely used in various fields to manufacture high-speed cutting tools and hard and tough material cutting tools, as well as cold working molds, measuring tools and high wear-resistant parts that are not affected by impact and vibration.

1. High hardness, wear resistance and red hardness

The hardness of cemented carbide can reach 86~93HRA at room temperature, which is equivalent to 69~81HRC. It can maintain high hardness at 900-1000 degree and has excellent wear resistance. Compared with high-speed tool steel, the cutting speed can be 4-7 times higher and the service life is 5-8 times longer. It can cut hard materials with a hardness of up to 50HRC.

2. High strength and elastic modulus of cemented carbide

The compressive strength of cemented carbide is as high as 6000MPa, and the elastic modulus is (4~7)×105MPa, both of which are higher than high-speed steel. But its bending strength is low, generally 1000~3000MPa.

3. Cemented carbide has good corrosion resistance and oxidation resistance

4. Small linear expansion coefficient

5. Formed products are no longer processed or reground