RP Graphite Electrode

RP Graphite Electrod 1.grade: RP(ISO9001-2000 sard) 2.nipple: 3TPI,4TPI 3.material:petrol coke 4.D:150mm-600mm L:1700mm-2400mm GRAPHITE ELECTRODES Item Unit Norminal Diameter UHP HP RP Resistance Electrode μΩ·m ≤5.5 ≤6.5 ≤8.5 Nipple ≤4.5 ≤5.5 ≤6.5 Bending Strength Electrode MPa ≥11.0 ≥10.0 ≥8.0 Nipple ≥20.0 ≥16.0 ≥15.0 Elastic Modulus Electrode GPa ≤14.0 ≤12.0 ≤9.3 Nipple ≤18.0 ≤16.0 ≤14.0 Bulk Density Electrode g/cm3 ≥1.67 ≥1.62 ≥1.53 Nipple ≥1.75 ≥1.73 ≥1.69 CTE. Electrode 10-6/°C ≤1.5 ≤2.4 ≤2.9 Nipple ≤1.4 ≤2.2 ≤2.8 Ash % ≤0.3 ≤0.3 ≤0.5 Norminal Diameter RP HP UHP mm Current load A Current Density A/cm2 Current load A Current Density A/cm2 200 5000-6900 15-21 5500-9000 18-25 250 7000-10000 14-20 8000-13000 18-25 9200-15100 21-30 300 10000-13000 14-18 13000-17400 17-24 13000-22000 20-30 350 13500-18000 14-18 17400-24000 17-24 20000-30000 20-30 400 18000-23500 14-18 21000-32000 16-24 25000-40000 19-30 450 22000-27000 13-17 25000-40000 15-24 32000-45000 19-27 500 25000-32000 13-16 30000-48000 15-24 38000-55000 18-27 550 32000-40000 13-16 37000-57000 15-23 48000-60000 18-24 600 38000-47000 13-16 44000-67000 15-23 52000-72000 18-24