UHP 550mm Graphite Electrode

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This is a 550mm diameter, ultra high power graphite electrode. China’s best quality graphite electrode. The graphite electrodes produced by our factory are of good quality, stable performance, low consumption, complete specifications, rapid delivery and good service.

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Graphitization is a very important stage in UHP graphite electrode production. It refers to the high-temperature heat treatment process of carbon products above 2300 ℃ in a high-temperature electric furnace to convert amorphous chaotic layer structure carbon into a three-dimensional ordered graphite crystal structure.

What's the funtion of graphitization?

*Improve the electrical and thermal conductivity

*Improve the thermal shock resistance and chemical stability (the linear expansion coefficient is reduced by 50-80%);

*Make the carbon material have lubricity and wear resistance;

*Discharge impurities and improve the purity of the carbon material (the ash content of the product is reduced from 0.5% to about 0.3%).

Comparison Technical Specification for UHP Graphite Electrode 22"
Item Unit Supplier Spec
Typical Characteristics of Pole
Nominal Diameter mm 550
Max Diameter mm 562
Min Diameter mm 556
Nominal Length mm 1800-2400
Max Length mm 1900-2500
Min Length mm 1700-2300
Bulk Density g/cm3 1.68-1.72
transverse strength MPa ≥12.0
Young' Modulus GPa ≤13.0
Specific Resistance µΩm 4.5-5.6
Maximum current density KA/cm2 18-27
Current Carrying Capacity A 45000-65000
(C.T.E) 10-6℃ ≤1.2
ash content % ≤0.2
Typical Characteristics of Nipple (4TPI)
Bulk Density g/cm3 1.78-1.84
transverse strength MPa ≥22.0
Young' Modulus GPa ≤18.0
Specific Resistance µΩm 3.4~3.8
(C.T.E) 10-6℃ ≤1.0
ash content % ≤0.2

UHP 550mm Graphite Electrode3 UHP 550mm Graphite Electrode0 UHP 550mm Graphite Electrode1 UHP 550mm Graphite Electrode2

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