green carborundum powder physic-chemical properties SiC 98.5%-99.5% Fe2O3 0.05-0.1% F.C 0.1-0.2% MohsHardness 9.4(min) Specific Gravity 3.2g/cm3 sample 240#-2000# green carborundum powder is made of quartz sand, petroleum coke (or coal char), sawdust, salt and other raw materials through high temperature smelting by resistance furnace.
