H.C. Starck offers NRC® niobium metal 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.

GSNb is a patent pending single-phase micro-alloy that has a grain size of approximately 2 ASTM numbers finer than standard commercial grade niobium.

Niobium is used in the manufacture of products for diverse applications.

  • Synthetic diamonds
  • Sputtering targets for fiber optic applications or architectural glass
  • Nickel based superalloys; and alloyed with titanium or tin
  • Superconductors
  • Nuclear reactors it has low thermal neutron cross section and superior corrosion resistance
  • High temperature vacuum furnaces, where it is an excellent getter
  • Sodium vapor lamps, where it is resistant to attack by the molten alkali

Niobium Rod

Niobium rod is worked cold from ingot to final diameter. Forging, rolling, swaging, and drawing are used singularly or in combination to reach the desired size. Proprietary techniques have been developed by H.C. Starck to overcome the metal's extremely high-galling tendencies.

Rod is generally supplied with a forged surface above 1-3/8" diameter, and a swaged or drawn finish in smaller diameters. Rod, preferably un-annealed, may be centerless ground to improve diameter tolerances. The minimum diameter for centerless grinding is .125". Rod to a maximum of 1/4" and wire may be supplied in coils or straightened and cut to length.


Product brochures

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  • Tantalum and Niobium - Lasting Solutions in Severe Environments
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