550-800mm RP graphite electrod

550-800mm RP graphite electrode,RP Graphite Electrode,Industrial Graphite Electrode,High Density Graphite Electrodes Manufacturer RP Graphite Electrode Industrial Graphite Electrode High Density Graphite Electrodes Manufacturer Electric resistivity :  7.5-8.8 Bending strength:>=6.5 Elastic Modulus: <=9 Bulk density: 1.54-1.62 Ash: <=0.3 CTE: 2.20-2.60 Regular power graphite electrode is a graphite electrode with allowable current density lower than 17A/cm2. RP graphite electrode is mainly used in the ordinary power electric furnace for steelmaking, silicon smelting and yellow phosphorus refining etc. 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....

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