Evening,
To buy Cobalt and Tantalum in various grades and finished sizes
contact: ALFA AESAR
www.alfa.com
30 Bond Street
Ward Hill, MA 01835-8099
1-800 343-0660
e-mail info@alfa.com
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
$234.00.
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
$67.60.
Bill in Vista