... mechanical strength resistance to thermal shock. The YNN Ceramic Balls are ideal choice as grinding mediums.1. BRAND ... ,ISO140014.Density: ≥5.95 g/cm3 5.PropertiesZirconia Ceramic ball possesses High grinding efficiency, High hardness, corrosion resistant ... prevent pollution: medicine, food, cosmetics 4)Ceramics: Electronic ceramics, refractory ceramics, structural ceramics, etc. 7. Size: Φ3mm,Φ5mm,Φ ...