1,Sic 99%max 2,ISO9001 ♦ The black silicon carbide is of high hardness, brittleness.♦ Chemical washed ... , brass, ore, bone, glass, leather, rubber, plastic and the thermal sensitive material.3. Partical size,Black silicon carbide F12-320# F320-2000 ... 0.30 0.40 0.400.60 0.80 1.20 1.50 1.70P P12 - P100 P120 - P150 P180 - P220 P240# - 1200 ... 0.30 0.30 2.5 0.60 0.80 1.20