(niobium jewelry wire)
Brief description: the name niobium was adopted officially by IUPAC in 1950, but a few commercial producers still like to refer to it as columbium. Niobium is a shiny, white, soft, and ductile metal, and takes on a bluish tinge when exposed to air at room temperatures for a long time. The metal starts to oxidize in air at high temperatures, and when handled hot must be done so under a protective atmosphere so as to minimize oxide production.
Small and large samples of niobium wire like this, as well as foil, sheet, insulated wire and tube, can be purchased from Advent Research Materials via their web catalogue.
(niobium jewelry wire)
source: http://www.webelements.com/niobium/
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