Ordinary Power Graphite Electrode

Technical Data of Regular Power Impregnated (RPI) Graphite Electrodes Items Classification Unit Nominal Diameter (mm) Quality Standard: GB/T YB/4088-2000 75-130 150-225 250-300 350-450 500-800 Resistivity Electrode μΩ.m ≦10.0 ≦10.5 ≦10.5 ≦10.5 ≦10.5 Nipple ≦8.0 ≦8.0 ≦8.5 ≦8.0 ≦8.0 Bending Strength Electrode Mpa ≧10.0 ≧10.0 ≧8.0 ≧7.0 ≧6.5 Nipple ≧15.0 ≧15.0 ≧15.0 ≧15.0 ≧15.0 Young’s Modulus Electrode Gpa ≦9.3 ≦9.3 ≦9.3 ≦9.3 ≦9.3 Nipple ≦14.0 ≦14.0 ≦14.0 ≦14.0 ≦14.0 Bulk Density Electrode g/cm3 ≧1.58 ≧1.53 ≧1.58 ≧1.60 ≧1.60 Nipple ≧1.70 ≧1.70 ≧1.70 ≧1.70 ≧1.70 CTE (100℃-600℃) Electrode ×10-6/℃ ≦2.9 ≦2.9 ≦2.9 ≦2.9 ≦2.9 Nipple ≦2.7 ≦2.7 ≦2.8 ≦2.8 ≦2.8 Ash Content Both % 0.3-0.5 0.3-0.5 0.3-0.5 0.3-0.5 0.3-0.5    Recommended current load of Regular Power Impregnated (RPI) Graphite Electrodes   Grade Nominal Dia. Allowable current  A Current density  A/cm2 RP electrode 200mm 500～6900 15～21 250mm 7000～10000 14～20 300mm 10000～13000 14～18 350mm 13500～18000 14～18 400mm 18000～23500 14～18 450mm 22000～27000 13～17 500mm 25000～32000 13～16 550mm 28000～34000 12～14 600mm 30000～36000 11～13 650mm 32000～39000 10～12 700mm 34000～42000 9～11