PURE STEEL COMPOSITION
For the ultimate uncontaminated sample.
| Element | Max Level | Unit |
| Gold | 0.05 | ppm |
| Silver | 1 | ppm |
| Bismuth | 10 | ppm |
| Cadmium | 10 | ppm |
| Cobalt | 300 | ppm |
| Copper | 500 | ppm |
| Chromium | 300 | ppm |
| Magnesium | 500 | ppm |
| Manganese | 1000 | ppm |
| Molybdenum | 300 | ppm |
| Nickel | 300 | ppm |
| Lead | 50 | ppm |
| Vanadium | 100 | ppm |