... or forged Tantalum Wires Tantalum- tungsten alloy wire1>.Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W) , Ta-7.5W2 ... (mm) GradeDiameter,inch (mm) tensile strength,psi (MPa),≥ Elongation, %, ≥ RO5200/RO5400 0.010(0.254)~0.0149(0.379) 35000 (241 ... according to ASTM specifications. The materials are available as RO5200, RO5400, RO5252(Ta2.5W) RO5255(Ta10W) 99.95% ASTMB365-98 tantalum ...