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Niobium (Columbium)

Niobium (Columbium)

 
PHYSICAL DATA

          Atomic Number

          41

          Atomic Weight

          92.906

          Density [ 20°C / 68°F ]

          8.57 g/cm3

          Melting Point

          2467 °C

GENERAL INFO
          History

Discovered in 1801 by Charles Hatchett in London, England.  Originally named Columbium, the official name is derived from "Niobe", the daughter of Tantalus in Greek mythology.

          Uses
  • Used in the manufacture magnets.  Also used in alloys to make superconductive magnets.
  • Used in steel making to improve strength and impact toughness. Also lowers transition temperature and may decrease hardenability.
FORMS
          Typical
          Pure forms: Niobium compounds:
  • Primary Niobium
  • Minerals (columbite)
  • Oxides
  • Niobium Bearing Alloys
  • Niobium Bearing Ferro Alloys
          F.W.W.
   

Acknowledgements

  
F.W. Winter
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