| Element | Composition, % (m/m) |
|---|---|
| Copper | REMAINDER |
| Silver | 0.0025 max |
| Arsenic | 0.0005 1) max |
| Bismuth | 0.00020 2) max |
| Cadmium | -1) max |
| Cobalt | -3) max |
| Chromium | -1) max |
| Iron | 0.0010 3) max |
| Manganese | -1) max |
| Nickel | -3) max |
| Phosphorous | -1) max |
| Lead | 0.0005 max |
| Sulphur | 0.0015 4) max |
| Antimony | 0.0004 1) max |
| Selenium | 0.00020 2) max |
| Silicon | -3) max |
| Tin | -3) max |
| Tellerium | 0.00020 2) max |
| Zinc | -3) max |
| Sum of elements listed in this table other than copper | 0.0065 max |
