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Performance features:

1. Long service life: the density is 40% of the steel plate, and the friction coefficient is small, which reduces the strip force, rolling and friction of high-speed bearing on the raceway.

2. High temperature resistance: silicon nitride ceramic ball still has high strength and hardness at 1050 ℃.

3. Self lubrication: never rust, can work without oil lubrication.

4. The elastic modulus is 44% larger than that of steel, and the deformation is less than that of steel ball under stress.

5. The hardness is higher than that of steel and the HRC is 78.

6. The coefficient of thermal expansion is 3 / 1 of steel, which can withstand thermal shock.

7. Corrosion resistance: more resistant to chemical corrosion than steel.

8. Non magnetic electrical insulation.

9. There is no adhesion and reaction with metal melting body at high temperature.