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1.0mm Yttria-stabilized Tetragonal Zirconia Polycrystal (Y-TZP) grinding ball Product Description Chemical Composition: ≥ ZrO2: 94.5% ≥ Y2O3: 5.0% Specific Gravity: ≥ 6.02g/cm3 Bulk Gravity: 3.7g/cm3 ...