Graphite electrode
High quality UHP and other graphite electrode products that are equivalent to domestic products quality.
Typical specificaiton for UHP are listed below as an examples. Electrodes with various other characteristics are available.
| Item | Diameter (mm)
300～400 | Diameter (mm)
450～500 | Diameter (mm)
550～600 | Diameter (mm)
650～700 |
|---|
| Bulk density g/cm3 | 1.70 | 1.70 | 1.70 | 1.70 |
| Specific resistance μΩm | 5.7～6.0 | 5.7 | 5.4～5.7 | 5.4 |
| Bending strength MPa | 10.5 | 10.5 | 11.0 | 11.0 |
| Young's modulus GPa | 14.0 | 14.0 | 14.0 | 14.0 |
| Thermal expansion coefficient (R.T. to 600°C) ×10-6/°C | 1.5 | 1.5 | 1.4 | 1.4 |
| True density g/cm3 | 2.20～2.22 | 2.21～2.23 | 2.21～2.23 | 2.21～2.23 |
| Porosity % | 21～26 | 20～24 | 20～24 | 20～24 |
| Ash content % | 0.2 | 0.2 | 0.2 | 0.2 |
Ferrosilicon (FeSi75)
Size (s): 10~50mm
| Composition | Si | C | P | S |
|---|
| FeSi | 75%~80% | ≦0.2% | ≦0.05% | ≦0.02% |
Silicomanganese (SiMn6517)
Size (s): 10-50mm
| Composition | Mn | Si | C | P | S |
|---|
| SiMn1 | 65%~70% | 17%~20% | ≦2.0% | ≦0.25% | ≦0.04% |
| SiMn3 | 60%~65% | 14%~17% | ≦2.5％ | ≦0.25% | ≦0.04% |
| Spec. | CaO (%) | Al2O3 (%) | SiO2 (%) | TiO2 (%) | Fe2O3 (%) | MgO (%) |
|---|
| Type I | 42～45 | 42～45 | 4～6 | ＜2.5 | ＜2.5 | ＜1.5 |
| Type II | 32～35 | 50～53 | ＜7.0 | ＜2.5 | ＜2.5 | ＜1.5 |
| Grade | Size (mm.sq) | Length (m) |
|---|
| SS400 | 130, 140, 150, 160 | Max.17 |
| 20Mnsi | 130, 140, 150, 160 | Max.17 |
| SWRM6~22 (low carbon steel bar) | 130, 140, 150, 160 | Max.17 |
| SWRH42~77 (high carbon steel bar) | 130, 140, 150, 160 | Max.17 |
