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Ensinger PEI
Elmet-Starck Pure Niobium (Columbium)
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal; Pure Element

Material Notes: Applications: NRC® niobium metal is produced from electron beam melted ingots. Grain Stabilized Niobium (GSNb) is made by EB and VAR melting. Both materials are malleable, weldable, machineable and formable. GSNb is used in applications where a consistently finer grain size is required.
Niobium is used in the manufacture of synthetic diamonds; in sputtering targets for fiber optic applications or architectural glass; in nickel based superalloys; and alloyed with titanium or tin, in superconductors. In nuclear reactors it has low thermal neutron cross section and superior corrosion resistance, It is an excellent getter and finds use in high temperature vacuum furnaces, and is resistant to attack by the molten alkali metals found in sodium vapor lamps.

Forms Available: Foil, Sheet, Plate, Welded Tubing, Rod, Wire and Bar.

Metallurgical Characteristics: Material is single-phase niobium, stress relieve at 650°C, re-crystallize at 950°C. Crystal structure: bcc

Information provided by H.C. Starck.

Elmet Technologies Acquired H.C. Starck Solutions Americas in 2023.

Vendors:
Available Properties
  • Specific Gravity
  • Atomic Mass
  • Atomic Number
  • Thermal Neutron Cross Section
  • Hardness, Vickers, annealed
  • Tensile Strength, Ultimate, re-crystallized
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield, typical
  • Elongation at Break
  • Modulus of Elasticity
  • Poissons Ratio
  • Shear Modulus, Calculated
  • Volume Resistivity
  • Critical Superconducting Temperature
  • CTE, linear
  • Specific Heat Capacity
  • Thermal Conductivity
  • Melting Point
  • Niobium, Nb (Columbium, Cb), Type II - Commercial Grade
  • Niobium, Nb (Columbium, Cb), Type I - Reactor Grade
  • Tantalum, Ta, Type I - Reactor Grade
  • Tantalum, Ta, Type II - Commercial Grade
  
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