tantalum targets

Baoji Zhong Bang rare metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of rare metal new materials, including many sorts and grades of their metals, sheet, tube, wire ,rod ,crucible , target ,alloy and so on. Tantalum features high melting point , low vapor pressure , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely used in many industries such as electronics ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation. Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W) Size: circular targets: Diameter 25mm up to 400mm xThickness 6mm up to 20mm rectangular targets: Thickness 1mm up to 12.7mm x Width up to 600mm x Length up to 2000mm Purity:≥99.95% or 99.99% Table 1: technology parameter Grade 3N, 3N5, 4N, with Ta99.99%min Recrystallization 95%min Grain size ASTM 4 or finer Surface finish 16Rms max. or Ra 0.4 ( RMS64 or better) Flatness 0.1mm or 0.15% max Tolerance +/-0.010" on all dimensions Special requirements to be agreed on by the supplier and buyer of negotiation