Cobalt, Colombite and Tantalum


To buy Cobalt and Tantalum in various grades and finished sizes
contact: ALFA AESAR

         30 Bond Street
         Ward Hill, MA 01835-8099
         1-800 343-0660

Tantalum foil 0.25mm (0.01 inch) thick, annealed purity 99.95, 100mm x
100mm is $132.00.

Cobalt foil 0.25mm (0.01 inch) thick purity 99.95, 100mm x 100mm is

No reference to Colombite in their catalog. There is reference to
Columbium as an old name for Niobium.

Niobium foil 0.25mm (0.01 inch) thick, purity 99.8%, 100mm x 200mm is

Bill in Vista