It is refined from high-quality petroleum coke and coal tar pitch through raw material calcination, batching, kneading, molding, roasting, graphitization, machining and
other processes.
| Project | Unit | RP (Regular Power) |
||
| ≤φ400 | ≥φ450 | |||
| Resistivity | Electrode | μ Ω m | 7.0-8.5 | 7.5-9.0 |
| Connector | 4.2-5.2 | |||
| Flexural strength | Electrode | Mpa | 7.5-9.5 | 7.0-8.5 |
| Connector | 17.0-22.0 | |||
| Elastic Modulus | Electrode | Gpa | 6.0-9.0 | |
| Connector | 12.0--16.0.0 | |||
| Ash | Electrode | % | 0.4 | |
| Connector | ||||
| Bulk density | Electrode | g/cm³ | 1.54-1.62 | |
| Connector | 1.72-1.77 | |||
| Thermal expansion coefficient (100-600℃) |
Electrode | 10-6/℃ | 2.0-2.4 | |
| Connector | 1.1-1.5 | |||
| Graphite Electrode specifications and allowable deviations | |||||||
| Nominal diameter | Actual diameter(mm) | Actual length(mm) | |||||
| Mm | in | Maximum | The smallest | The black part is the smallest | Length | Length tolerance | Short length |
| 200 | 8 | 205 | 200 | 197 | 1600/1800 | ||
| 250 | 10 | 256 | 251 | 248 | 1600/1800 | ||
| 300 | 12 | 307 | 302 | 299 | 1600/1800 | ||
| 350 | 14 | 357 | 352 | 349 | 1600/1800 | ||
| 400 | 16 | 409 | 403 | 400 | 1800/2000/2200 | ±100 | -275 |
| 450 | 18 | 460 | 454 | 451 | 1800/2000/2200 | ||
| 500 | 20 | 511 | 505 | 502 | 1800/2000/2200/2400 | ||
| 550 | 22 | 562 | 556 | 553 | 2000/2200/2400 | ||
| 600 | 24 | 613 | 607 | 604 | 2000/2200/2400/2700 | ||
| 650 | 26 | 663 | 657 | 654 | 2400/2700 | ||
| 700 | 28 | 714 | 708 | 705 | 2400/2700 | ||
| 750 | 30 | 765 | 761 | 758 | 2200/2400/2700/3000 | ||
| 800 | 32 | 816 | 812 | 809 | 2200/2400/2700/3000 | ||