... -10W) purity:99.95%,99.99% ISO9001:2008 tantalum bar ASTM B365Introduction:Tantalum is dark, dense, ductile, very hard, easily fabricated ... a small volume. Because of the size and weight advantages, tantalum capacitors are attractive for portable telephones, personal computers, and ... available in a wide range of forms including nut, screw ,ring ,wire, foil, sheet, rod, strip, plate, tube, alloys ...