Brown Fused Alumina Abrasive

colour：Darlk Brown Crystal System:Alpha-alumina trigonal system Mohs Hadness:≥9.0 Melting (°C) Temperature (°C)：2050 Refractory Temperature(°C):1800 (g/cm2)True Density：≥3.90 Magnetic Materia:0.01% Grit No.：F12-F220