300-500mm HP graphite electrod

300-500mm HP graphite electrode,HP Graphite Electrode,HP Graphite Electrodes For Arc Furnaces,HP Graphite Electrode Manufacture HP Graphite Electrode HP Graphite Electrodes For Arc Furnaces HP Graphite Electrode Manufacture Electric resistivity : 5.5-6.8 Bending strength: >=10.0 Elastic Modulus: <=13 Bulk density:1.62-1.70 Ash: <=0.3 CTE: 1.80-2.20 High power graphite electrode is a graphite electrode with allowable current density between 18-25A/cm2. HP graphite electrode  mainly used in high power steelmaking electric arc furnace. Physical and Chemical Index of  Hign Power Graphite Electrode: Item  Unit HP 300～500 550～700 Electric Resistivity  Electrode uΩ.m 5.5～6.8 5.5～7.0 Nipple 4.0～5.5 Bending Strength Electrode MPa ≥10.0 ≥8.5 Nipple ≥18.0 Modulus of Elasticity Electrode GPa ≤13.0 Nipple ≤15.0 Bulk Density Electrode g/cm3 1.62～1.70 Nipple 1.72～1.80 Ash Content Electrode % ≤0.3 Nipple The Coefficient of Thermal Expansion(CTE) Electrode 10-6/℃ 1.80～2.20 Nipple 1.50～1.80 High Power Graphite Electrode Current Carrying Capacity Norminal Diameter HP Current Carrying Capacity Current Density inch mm A A/cm2 12 300 *～* 17～24 14 350 *～* 17～24 16 400 *～* 16～24 18 450 *～* 15～24 20 500 *～* 15～24 22 550 *～* 14～22 24 600 *～* 13～21 28 700 *～* 12～19 32 800 ／ ／ Tolerance of Graphite Electrode Diameter and Length（mm)  Nominal Diameter Actural diameter Length in mm max min Black surface min 12 300 307 302 299 1800/2000 14 350 358 352 349 1800/2000/2200 16 400 409 403 400 1800/2000/2200 18 450 460 454 451 1800/2000/2200 20 500 511 505 502 2000/2200/2400 22 550 562 556 553 2000/2200/2400/2700 24 600 613 607 604 2200/2400/2700/3000 28 700 714 710 707 2200/2400/2700/3000 29....

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