HP Graphite Electrode
Raw materials are mixed and then molded. Heat treatment is then applied in the baking and graphitization process to form the finished product.
Product parameters
Physical & Chemical Properties of HP Graphite Electrodes
Items | Classification | Unit | Nominal Diameter (mm) | ||
HP Graphite Electrode | |||||
200-400 | 450-500 | 550-600 | |||
Resistivity | Electrode | μΩm ≤ | 7.0 | 7.5 | 7.5 |
Nipple | 6.3 | 6.3 | 6.3 | ||
Bending Strength | Electrode | Mpa ≥ | 10.5 | 10.0 | 8.5 |
Nipple | 17.0 | 17.0 | 17.0 | ||
Young’s Modulus | Electrode | Gpa ≤ | 14.0 | 14.0 | 14.0 |
Nipple | 16.0 | 16.0 | 16.0 | ||
Bulk Density | Electrode | g/cm3 ≥ | 1.60 | 1.60 | 1.60 |
Nipple | 1.72 | 1.72 | 1.72 | ||
CTE（100℃-600℃） | Electrode | ×10-6/℃ ≤ | 2.4 | 2.4 | 2.4 |
Nipple | 2.2 | 2.2 | 2.2 | ||
Ash Content | Electrode | % ≤ | 0.5 | 0.5 | 0.5 |
Nipple | |||||
Recommended current load of HP Graphite Electrodes
Grade | Nominal Dia. | Allowable current A | Current density A/cm2 |
HP electrode | 200mm | 5500～9000 | 18～25 |
250mm | 8000～13000 | 18～25 | |
300mm | 13000～17400 | 17～24 | |
350mm | 17400～24000 | 17～24 | |
400mm | 21000～31000 | 16～24 | |
450mm | 25000～40000 | 15～24 | |
500mm | 30000～48000 | 15～24 | |
550mm | 34000～53000 | 14～22 | |
600mm | 38000～58000 | 13～21 |
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