Hunhu
| Kuumbwa Kwekemikari(wt.%) | |||
| Element(ppm max) | Grade Nb-1 | Giredhi Nb-2 | Giredhi Nb-3 |
| Ta | 30 | 50 | 100 |
| O | 1500 | 2000 | 3000 |
| N | 200 | 400 | 600 |
| C | 200 | 300 | 500 |
| H | 100 | 200 | 300 |
| Si | 30 | 50 | 50 |
| Fe | 40 | 60 | 60 |
| W | 20 | 30 | 30 |
| Mo | 20 | 30 | 30 |
| Ti | 20 | 30 | 30 |
| Mn | 20 | 30 | 30 |
| Cu | 20 | 30 | 30 |
| Cr | 20 | 30 | 30 |
| Ni | 20 | 30 | 30 |
| Ca | 20 | 30 | 30 |
| Sn | 20 | 30 | 30 |
| Al | 20 | 30 | 30 |
| Mg | 20 | 30 | 30 |
| P | 20 | 30 | 30 |
| S | 20 | 30 | 30 |
1. Niobium inokosha zvikuru superconducting zvinhu kuti ibudise yakakwirira-capacitor capacitor.
2. Niobium powder inoshandiswawo kugadzira tantalum.
3. Iyo yakachena Niobium metal powder kana Niobium Nickel alloy inoshandiswa kugadzira Nickel, Chrome uye Iron base yakakwirira tembiricha alloy.
4. Kuwedzera 0.001% kusvika 0.1% Niobium powder kushandura michina yesimbi.
5. Inoshandiswa sechinhu chakavharwa che arc tube
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