1,Sic 99%max 2,ISO9001 ♦ The black silicon carbide is of high hardness, brittleness.♦ Chemical washed ... is produced in an electric resistance furnace from quartz sand ,petroleum coke and anthracite at high temperature.2. Applications:♦ Low tensile strength ... iron, bronze, brass, ore, bone, glass, leather, rubber, plastic and the thermal sensitive material.3. Partical size,Black silicon carbide F12 ...