Alumina ball 1.Density>3.62g/cm3 2.Wear lost<0. ... range:1.5mm ~70mm 4.Manufactory type:CIP or Rolling Alumina ball have characteristics of high strength, high density, high abrasion ... ,30mm,40mm,50mm,60mm,70mm. Performance Index of Wear-resistant Alumina BallPerformance Index HXMM70 SeriesHXMM80 SeriesHXMH92 SeriesHXMH95 SeriesAl2O3(%)≥70≥80≥92 ...