UHP Graphite Electrode 550mm (22 inch)


Graphite electrode is one of the most important metallurgical products, mainly used as conductive material in electric arc furnace metallurgy production. UHP graphite electrodes are mainly used for steelmaking high-power and ultra-high power electric furnaces.

Graphite electrode Dimension
● Nominal Diameter: 550mm (min 556mm, max 562mm)
● Nominal Length: 2400 mm (+75mm,-125mm)
● Nipple:  298T4N
● Nipple Diameter: 298.45 mm
● Nipple Length: 355.6 mm
● Typical Weight: Electrodes and Nipple Approx.1005 kg

Physical and Chemical Parameters of UHP550mm Graphite Electrode

 Index UnitYB/T4090 Industry Standard
Typical Value
 
LSR≤Electrode μΩ.M4.5-5.8
Nipple3.4-4.5
Flexural Strength ≥Electrode Mpa6.0-8.0
Nipple15.0-24.0
Elastic Modulus ≤Electrode Gpa9.0-16.0
Nipple12.0-18.0
Bulk Density ≥Electrode g/cm³1.65-1.80
Nipple1.76-1.86
CTE ≤Electrode 10-6/ ℃1.1
Nipple0.9
Ash ≤%0.3
Current Carrying CapacityAEAF 45000-68000LF  45000-69000

Advantage

● Withstand large currents, high discharge rate.
● Good dimension stability, not easy to deform.
● Resistant to cracking & spalling.
● High resistance to oxidation and thermal shock.
● High mechanical strength, low electrical resistance.
● High machining accuracy, good surface finishing.

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