... .High grinding efficiency 2.High density 3.wear-resist Zirconium Oxide Ceramic Ball ,large ceramic balls,white ceramic balls Jiaozuo Lifeng ... , etc.Size: Diameter(mm)3,3.7,4.5,5,6.5,7,8.5,10,12,1520,25,30,35 ... -10MpaModulus of elasticity200GpaThermal conductivity3(20-400°)W/mkThermal expansion coefficient9.6(20-400°)10×10KFlexural strength900-1100MpaHardness≥87GpaAbrasion loss≤2ppm RemarksIf ...