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RP Graphite Electrode

RP graphite electrode - China graphite electrode factory and supplier
It is used in ordinary power electric furnaces such as steelmaking, silicon smelting, and yellow phosphorus smelting. Made of petroleum coke and coal pitch as raw materials. It is characterized by low ash content, good electrical conductivity, high temperature resistance, and does not melt or deform under high temperatures. As a conductive material for electric arc furnace steelmaking, it can be used at current densities exceeding 17A/cm2. Specifications and model diameters: 100mm-960mm.

The difference between RP graphite electrode and high power and ultra high power grade graphite electrodes is that it does not contain needle coke. The production cycle is about 45 days and is mainly used for smelting ordinary steel, silicon, and yellow phosphorus. They offer several advantages, including high electrical conductivity, improved thermal shock performance, resistance to oxidation and corrosion, long life, ability to operate at high temperatures, and low environmental impact.

Industrial Application

Regular power graphite electrodes find extensive applications in industries such as foundries and EAF steelmaking. They are utilized in electric arc furnaces, ladle furnaces, and Submerged arc furnace. Include other melting processes where high-temperature environments and efficient electrical conductivity are essential.

It provides a conductive path for the current to pass through in the arc furnace. This allows precise control of temperatures and electric currents needed for melting, refining, and alloying in smelting processes. Their uniform electrical conductivity and low thermal expansion make them ideal for smelting processes.

Electric arc furnace graphite electrodes for steelmaking- Jinsun Carbon UHP graphite electrode in DC electric arc furnace Graphite electrodes are used in electric arc furnace steelmaking


RP Graphite Electrode Advantage

High-quality materials, using high-quality and high-purity petroleum coke and pitch coke.
Highly conductive, because of its lower resistivity, it is easier for electric current to pass through it in an electric arc furnace.
It has high mechanical strength, strong bending and compression resistance, and is not easy to segment or break.
The cost is low, the production process is relatively simple, and the price is cheap.


Allowable Current-Carrying Capacities


Nominal RP Graphite Electrodes
mm inch Current-Carrying


Current Density


300 12 10000~13000 14~18
350 14 13500~18000 14~18
400 16 18000~23500 14~18
450 18 22000~27000 13~17
500 20 25000~32000 13~16
600 24 35000~41000 13~15


Physical &Chemical Properties Of Electrode And Nipple


RP Graphite Electrode Unit Diameter
12”-16” 18”-20” 24”
Specific resistance Electrode μΩ·m 8.0 8.0 9.0
Nipple 7.0 7.0 7.0
Transverse strength Electrode ΜРa 6.8 6.4 6.4
Nipple 15.0 13.0 13.0
Elastic modulus Electrode GРa 9.3 9.3 9.3
Nipple 14.0 14.0 14.0
Bulk Density Electrode g∕㎝3 1.56 1.56 1.55
Nipple 1.70 1.70 1.72


Electrode 10-6∕℃ 2.9 2.9 2.9
Nipple 2.8 2.8 2.8
Ash content % 0.5 0.5 0.5


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