1,Sic 99%max 2,ISO9001 ♦ The black silicon carbide is ... cast iron, white cast iron, bronze, brass, ore, bone, glass, leather, rubber, plastic and the thermal sensitive material.3. Partical size ... 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 1-3 3-5 5-8 Silicon Carbide grit