... 3628,ASTM B 386,etc. Different sizes availabl pure tantalum strip Tantalum is dark, dense, ductile, very hard, easily fabricated, and ... . The metal is renowned for its resistance ,as the metal powder, is in the production of electronic components, mainly capacitors and ... of forms including nut, screw ,ring ,wire, foil, sheet, rod, strip, plate, tube, alloys according to Standard ASTM AMS ASME MIL ...