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Graphite Electrode

Introduction:

Graphite electrode is the conducting element for electric arc furnaces steel making. It is made of petroleum coke, needle coke,coal pitch and produced by a series of strict production processes. High-current lines insert through the graphite electrode port inside the furnace body. This will releases electric energy in the arc furnace to heat the furnace.

UHP Graphite Electrode Index
Item Unit Nominal diameter/mm
300-400 450-500 550-650 700
Typical Value Range Typical Value Range Typical Value Range Typical Value Range
Specific Resistance Electrode μΩ·m 5.8 5.3-6.0 5.5 4.4-5.6 5.0  4.7-5.4 5.1 4.8-5.5
Nipple 3.3 3.2-3.5 3.3 3.2-3.5 3.3 3.2-3.5 3.3 3.2-3.5
Flexural Strength Electrode Mpa 12 10.5-13 12 10.5-13 12 10-13 12 10-13
Nipple 22 20-24 22 20-24 22 22-24 23 23-24
Young's Modulus Electrode Gpa 9 8-14 9 8-14 9 8-14 9 8-14
Nipple 15 13-20 15 13-20 15 13-20 15 13-20
Bulk Density Electrode g/cm3 1.72 1.68-1.74 1.72 1.68-1.74 1.72 1.68-1.74 1.72 1.68-1.74
Nipple 1.81 1.79-1.83 1.81 1.79-1.83 1.81 1.79-1.83 1.81 1.79-1.83
(100℃-600℃)
Coefficient
of Thermal
Expansion
Electrode 10-6/℃ 1.4 1.3-1.5 1.4 1.3-1.5 1.4 1.3-1.5 1.4 1.3-1.5
Nipple 1.3 1.2-1.4 1.3 1.2-1.4 1.3 1.2-1.3 1.3 1.2-1.3
Ash Content % ≤0.2

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UHP Graphite Electrode