... 65%SiO2>30%Special Density>3.9g/cm3Bulk Density>2.4g/cm3Size0.6-20mm2. Rigidity HRA 87, 9 (Mohs) min3 ... m1/24. Crushing strength 150kgf (2mm )5. wearing value international standard6. Specifications(Diameter mm) 0.6-0.8,0.8-1.0,1.0-1.2,1.2 ... -1.4,1.4-1.7, 1.5-2.0,2.0-2.5,3, ... 4,5,8,10 or to be customized Application: 1) Paint , Coating 2) Ultra-fine ...