| 2849100000 | Of calcium | 5.5% |
| 2849200000 | Of silicon | 5.5% |
| 2849900000 | Other | — |
| 2849901000 | Of boron | 4.1% |
| 2849903000 | Of tungsten | 5.5% |
| 2849905000 | Of aluminium; of chromium; of molybdenum; of vanadium; of tantalum; of titanium | 5.5% |
| 2849905010 | Of tantalum | 5.5% |
| 2849905090 | Other | 5.5% |
| 2849909000 | Other | 5.3% |