High and uniform volume hardness,high shock value ,permanent in shape

Our serious promise: supplying you with high quality grinding media ball products, competitive prices, timely delivery, and satisfactory service. 

Detailed properties are as follows:
1. High whole hardness: the surface hardness could be HRC 60-65, the average volumetric hardness could be HRC 60-63, and the hardness gradient is uniform.
2. High notched bar impact strength: it is more than 17J/cm2
3. Low breakage rate: Properties for peel &breakage resistant are more than 10 times than traditional steel ball. There is almost no breakage when ball impact more than 200,000 times. Actual breakage rate is less than 1%.4. Permanent in shape: our balls won’t be out of circularity from start until finish.