... ,5 times higher as Zirconium Silicate beads and 6-8 times higher as Al2O3 beads.D.Because ... sizeφ0.1,φ0.2,φ0.4~φ0.6,φ0.6~φ0.8,φ0.8~φ1.0,φ1.0 ... 2,φ1.2~φ1.4,φ1.4~φ1.6,φ1.6~φ1.8,φ1.8~φ2.0,φ2.0~φ ... 2.5……3.Typical properties of ceramics grinding beadsMajor ... ZrO2:94.6Y2O3:5.2Density: ≥6.0Packing Density : ≥3.7Flexural strength: 900Mohs Hardness: 9 Zirconia Grinding Media Ceramic Beads (0 ...