| Type: | Graphite Electrodes |
|---|---|
| Composition: | Carbon |
| Carbon Content: | High-Carbon |
| Grade: | Industrial Grade |
| Forming Way: | Molded Graphite |
| Crystal Morphology: | Compact Crystalline Graphite |
| Customization: |
|---|
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The properties of the anode are largely set during the baking process and must be carefully controlled to ensure an acceptable output efficiency and reduce the amount of undesirable byproduct produced.[3] To that end, the aluminium smelting industry has settled on a range of acceptable values for commercial mass-produced anodes for the purpose of consistent, optimal performance.
| Property | Standard | Range |
|---|---|---|
| Baked apparent density | ISO 12985-1 | 1.53-1.64 gcm-3 |
| Electrical resistance | ISO 11713 | 55-62 μΩ for pressed anodes |
| Compressive strength | ISO 18515 | 40-48 MPa |
| Young's modulus | RDC-144 | 3.5-5.5 GPa |
| Tensile strength | ISO 12986-1 | 8-10 MPa for pressed anodes |
| Thermal conductivity | ISO 12987 | 3.5-4.5W mK-1 |
| Coefficient of thermal expansion | RDC-158 | 3.5-4.5 x 10-6 K-1 |
| Air permeability | ISO 15906 | 0.5-1.5 nPm |
| Carboxy reactivity residue | ISO 12988-1 | 84-96% |
| Air reactivity residue | ISO 12989-1 | 0.05-0.3% per minute |
| Grain stability | N/A | 70-90% |
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