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Compounds | Reactions | Production
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| Niobium Compounds |
| Niobium carbide |
| Niobium-tin |
 Niobium carbide NbC and Nb2C
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| An extremely hard refractory ceramic material, commercially used in tool bits for cutting tools. Zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors. |
| Niobium-tin Nb3Sn
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| Used industrially as a type II superconductor. Its critical temperature is 18.3 kelvins. It is usually used at 4.2 K, the boiling point of liquid helium. |