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Graphite electrode, mainly petroleum coke, needle coke as raw material, coal pitch as binder, calcination, ingredients, kneading,molding, baking and graphitization, machining and made, which is released in electric arc furnace in the form of arc conductor of electricity to heat melting furnace charge, with low resistivity, good conductivity, low ash, uniform and compact structure, good oxidation resistance, high mechanical strength, etc.
| Item | Unit | Graphite Electrode | ||||
| RP(mm) | HP(mm) | UHP(mm) | ||||
| φ100-φ600 | φ100-φ800 | φ200-φ500 | φ550-φ800 | |||
| Resistivity | Electrode | μΩm | 7.0-10.0 | 5.8-6.6 | 4.8-5.8 | 4.6-5.8 |
| Nipple | 4.0-4.5 | 3.5-4.0 | 3.5-4.0 | 3.5-4.0 | ||
| Modulus of Rupture | Electrode | Mpa | 8.0-10.0 | 10.0-13.0 | 10.0-14.0 | 10.0-14.0 |
| Nipple | 19.0-22.0 | 20.0-23.0 | 20.0-24.0 | 22.0-26.0 | ||
| Young's Modulus | Electrode | Gpa | 7.0-9.3 | 8.0-12.0 | 9.0-13.0 | 10.0-14.0 |
| Nipple | 12.0-14.0 | 14.0-16.0 | 15.0-18.0 | 16.0-19.0 | ||
| Bulk Density | Electrode | g/cm3 | 1.53-1.56 | 1.64-1.68 | 1.68-1.74 | 1.68-1.74 |
| Nipple | 1.70-1.74 | 1.75-1.80 | 1.78-1.82 | 1.78-1.84 | ||
| CTE (100-600ºC) | Electrode | 10-6/ºC | 2.2-2.6 | 1.6-1.9 | 1.1-1.4 | 1.1-1.4 |
| Nipple | 2.0-2.5 | 1.1-1.4 | 0.9-1.2 | 0.9-1.2 | ||
| Ash | % | 0.5 | 0.2 | 0.3 | 0.3 | |
