... % 4.density:0.4g/cm3,Moh's hardness graphite electrode powder mainly used in metallurgy industry as carbon raisers,reducer ,foundry ... industry as carbon raisers,reducer ,foundry modifier,fireproof , carburetant in steel casting& smelting ect.ItemFixed Carbon98%, 98.5%, 99%Min.1Sulphur0 ... : 0.05%max, moisture:0.5%max , size: >=100mm.Graphite powder: fixed carbon: 98% min, ash: 1.5% max, sulphur: 0 ...