15mm Zirconia Ceramic Grinding Beads 95% ZrO2 15mm zirconia grinding balls deliver 6.0 g/cm3 density and 1250 HV hardness for heavy duty mining mill grinding. Key Features High density media shortens grinding cycle time Wear loss below 10ppm per hour protects product purity Polished surface reduces mill and pump wear Chemically inert in acid and alkaline slurries Narrow size tolerance for repeatable results Specifications Material 95% ZrO2 Y-TZP Size 15mm Density 6.0 g/cm3