Niobium Rod

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Niobium have high melting point, excellent resistance to corrosion and good workability. Niobium rod is widelyusedfor pharmacy, semiconductor, aviation and aerospace, nuclear, high temperature assemblies and other fields.

Specification for Niobium Rod

Material: R04200-Type 1 -Reactor grade unalloyed niobium
R04210-Type 2 -Commercial grade unalloyed niobium
R04251-Type 3—Reactor grade niobium alloy containing 1 % zirconium
R04261-Type 4—Commercial grade niobium alloy containing 1 % zirconium
R40220-Type 5 -RRR grade pure niobium
Size: 3mm-55mm diameter x L<1400mm, while larger rods will be named as niobium ingot
Standard: As per ASTM B392
Purity: >=99.9%

Chemical composition for Niobium Rod

Composition%
De Main Content Impurities (≤ %)
Nb Fe Si Ni W Mo Ti Ta O C H N
Nb1 Remainder .004 .004 .002 .005 .005 .002 0.05 .012 .0035 .0012 .003
Nb2 Remainder .01 .01 .005 .02 .01 .004 0.07 .015 .0050 .0015 .008

Mechanical requirements (annealed condition) for Niobium Rod

Grade Tensile strength,δb psi (MPa), ≥ Yield strength,δ0.2,  psi (MPa), ≥ Elongation in 1″/2″ gage length, %, ≥
R04200-1 R04210-2 18000 (125) 10500 (73) 25
Special requirements of niobium ingot to be agreed on negotiations

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