Ferro niobium alloyed tau pauta
Fa'atauga vevela ferro niobium alloyed tau pauta
Fa'amatalaga o oloa
| Chemistry/Vaega | FeNb | FeNb | |
| Ta+Nb≥ | 60 | 65 | |
| E itiiti ifo i le (%) | Ta | 0.01 | 0.2 |
| Al | 1.2 | 5 | |
| Si | 1.1 | 3 | |
| C | 0.02 | 0.2 | |
| S | 0.02 | 0.1 | |
| P | 0.01 | 0.2 | |
Tusi Faamaonia：
O mea e mafai ona matou saunia：
