... 4.Hardness(mohs):9.15 5 Color:black Black Silicon Carbide:1.Sic 98% F.C. 0.35% 2. Fe2O3 ... mohs) 9.15…….ture density 3.9Marterials: petroleum cokeBlack silicon carbide is produced at high temperature in an electric resistance type ... 600#,800#,1000#,1200#,1500# 2000#,2500#,3000#,4000#Refractory grade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh,-240mesh ... (°C)1900Ture density(g/cm3)3.9 Black Silicon Carbide