1.particle size from 45um to 500um(32-325mesh) 2.carbon content(75-99.9%) 3.ash2-3% 4.density:0.4g/cm3,Moh's hardness graphite electrode powder mainly used in metallurgy industry as carbon raisers,reducer ,foundry modifier,fireproof ect. are the subsidiary products after the process of machining electrodes , processing, smashing, filtering waste graphite, mainly used in metallurgy industry as ...