... abrasion, entire specification,strong practicability. It can be used for ball mill, mixing mill, vibration mill, sand mill, etc. The products ... ,40mm,50mm,60mm,70mm. Performance Index of Wear-resistant Alumina Ball Performance Index HXMM70 SeriesHXMM80 SeriesHXMH92 SeriesHXMH95 SeriesAl2O3(%)≥70≥80≥92 ... .5≤0.25≤0.2Mohs Hardness9999Water Absorption Rate(%)≤0.02≤0.02≤0.02≤0.02Bulk Density(g/cm3)≥3.0≥3.2 ...