... 20mm 2.Great thermostability 3.High strength,hardness,density 4High fracture toughness 5 ZrO2 ceramic possesses Ceramic ... Ceramic Ball, HNCC Zirconia Ball, Best grinding Medium, HNCC Zirconia Ceramic Ball2.Material Superfine Zirconium Dioxide3.Certificate ISO9001,ISO140014.Density: ≥5.95 g/cm35.Properties Zirconia Ceramic ball ... 5mm,Φ6mm,Φ8mm,Φ10mm,Φ12mm,Φ15mm,Φ20mm etc.Process arrangement by following ...