zirconia grinding beads Chemical Composition ZrO2 95% Y2O3 5%Physical DataDensity: 6.0 kg/L: Bulk density: 3.6 kg/L Compressive strength: 2000N (Φ2.0mm) Hardness mohs: 9 Available size: Φ0.2-30mm FeaturesHigh grinding efficiency Low abration and no contamination Good chemical stability Good sphericity and mobility Low working co ApplicationPure Zirconia Ceramic Grinding Beads is mainly used in the process of ultra fine products which is non contaminated and difficult to grind, such as Nano-TiO2, MLCC, Pizo-Ceramics, CMP, Bio-Materials, Printing ink, Pigment, Magnetical coating, insulative material , Cosmetics ect.