... Specification as follows 1.Component ZrO2 94.6%,Y2O3 5.2±0.2% 2.Real density 6.0g/cm3 min 3.Bulk density ... 87, 9 (Mohs) min 5.Slenderness ratio 8.0Mpa.m1/2 6.Crushing strength 150kgf (2mm ) 7.wearing value international ... 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 ... Good round sphere, smooth surface, pearl-like sheen. 2. Good tenacity, impact-endurable, no break under high speed impact. 3. 30-50 ...