| Grade | Composition chimique % | ||||||
| Cu min | Impuretés : max | ||||||
| Carbone | Coblet | Fer | Phosphore | Soufre | Zinc | ||
| 99.99 % | 99.99 | 0.003 | 0.0005 | 0.001 | 0.0025 | 0.002 | 0.001 |
| 99.95 % | 99.95 | 0.03 | 0.0005 | 0.003 | 0.0075 | 0.007 | 0.002 |
| 99.90 % | 99.90 | 0.03 | 0.0009 | 0.005 | 0.009 | 0.009 | 0.003 |