... Baoji Zhong Bang rare metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of ... of their metals, sheet, tube, wire ,rod ,crucible , target ,alloy and so on in conformity with ASTM. Tantalum features high melting point , low ... .Tantalum bar Tantalum- tungsten alloy barMaterial: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W) Available size: 3~120mmStandard: As per ASTM ...