стержень ниобия

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. Niobium is an associated metal of tantalum ,characterized in high strength ,high conductivity ,resistance to corrosion by liquid base metals ,section with low neutron capture ,etc ,widely used for steel ,ceramics ,electronics ,nuclear energy industries and superconductor technology.Niobium rod/bar Material: RO4200-1, RO4210-2A Size: Dia3 100mm Standard: ASTM B392-98 Purity: ≥99.9% or 99.95% Table.1 Chemical composition: Chemistry % Designation Chief component Impurities maxmium Nb Fe Si Ni W Mo Ti Ta O C H N Nb1 Remainder 0.004 0.003 0.002 0.004 0.004 0.002 0.07 0.015 0.004 0.0015 0.002 Nb2 Remainder 0.02 0.02 0.005 0.02 0.02 0.005 0.15 0.03 0.01 0.0015 0.01 Table 2. Mechanical requirements (annealed condition) Grade Tensile strength δbpsi (MPa), ≥ Yield strengthδ0.2, psi (MPa),≥ Elongation in 1"/2" gage length, %, ≥ RO4200-1 RO4210-2 18000 (125) 12000 (85) 25 Special requirements to be agreed on by the supplier and buyer of negotiation