Customs code:8545190000 Properties: low resistivity, good conductivity, low ash, uniform and compact structure, good oxidation resistance, high mechanical strength. Introduction: graphite electrode, mainly petroleum coke, needle coke as raw material, coal pitch as binder, calcination, ingredients, kneading, molding, baking and graphitization, machining and made, which is released in electric arc furnace in the form of arc conductor of electricity to heat melting furnace charge, with low resistivity, good conductivity, low ash, uniform and compact structure, good oxidation resistance, high mechanical strength, etc. Product Parameters Item Unit Ordinary power graphite electrode High power graphite electrode Ultra High Power Electrode joint The diameter mm 100-350 400-500 200-350 400-500 250-500 200-500 Than the resistance ©m 6-9 7-10 6-7 6-7 4-5 4-7 Flexural strength Mpa 10-12 6.5-10 10-15 10-13 12-22 12-20 Modulus of elasticity Gpa 7-9 7-9.3 9-12 9-12 12-15 12-14 Thermal expansion coefficient / 1.8-2.9* 10-6 1.7-2.9* 10-6 1.6-2.2* 10-6 1.5-2.2* 10-6 1.4-2.2* 10-6 1.5-2.2* 10-6 The compressive strength Mpa 18-22 18-22 24-28 24-26 24-26 32-38 Bulk density g/cm³ 1.52-1.57 1.52-1.57 1.62-1.70 1.62-1.68 1.72-1.81 1.70-1.80 Ash % 0.3 0.3 0.3 0.3 0.3 0.3