Niobium, which was formerly columbium, is a chemical element with the symbol Nb (formerly Cb) and atomic number 41. 

Niobium has a similar structure to Tantalum and is produced in a similar method.

It too has a very high melting point of around 2470°C.

It has excellent corrosive resistance and has good cold ductility.

It is however half as dense as Tantalum.

Applications include; sintering trays and boats, special chemical applications, superconductors, medical components, jet engine parts and is used in the lighting industry.

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