Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as minor components in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum.
T 0363 Tantalum foil, 0.003 mm thick, 99.9% - used in the production of insulation barriers in vacuum furnaces