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Refractory Metals
Niobium, Nb (Columbium, Cb); Wrought
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal; Pure Element

Material Notes: Wrought applies only to tensile and/or hardness values; other property values are typical of the element. The name niobium is used by chemists but the element is often called columbium by American metallurgists.

Fabrication: good formability, work hardens slowly, cannot be soldered. Joining requires adhesives, rivets, nuts and bolts, or capacitive discharge welding.

Applications: used in aerospace applications (i.e. rocket boosters), sodium vapor lamps, and superconductors.

Vendors:
Available Properties
  • Density
  • Atomic Mass, 1995
  • Atomic Number
  • Thermal Neutron Cross Section
  • X-ray Absorption Edge, K
  • X-ray Absorption Edge, LI
  • X-ray Absorption Edge, LII
  • X-ray Absorption Edge, LIII
  • Electrode Potential
  • Electronegativity, Pauling
  • Ionic Radius, Crystal Ionic Radius for Valence +5
  • Ionic Radius, Crystal Ionic Radius for Valence +4
  • Ionic Radius, Crystal Ionic Radius for Valence +1
  • Electrochemical Equivalent
  • Hardness, Brinell, Converted from Vickers for 3000 kg load/10 mm ball Brinell test.
  • Hardness, Knoop, Converted from Vickers.
  • Hardness, Rockwell B, Converted from Vickers.
  • Hardness, Vickers
  • Tensile Strength, Ultimate
  • Elongation at Break
  • Modulus of Elasticity
  • Poissons Ratio
  • Shear Modulus
  • Electrical Resistivity
  • Magnetic Susceptibility, cgs/g
  • Critical Magnetic Field Strength, Oersted
  • Critical Superconducting Temperature
  • Heat of Fusion
  • Heat of Vaporization
  • CTE, linear
  • CTE, linear
  • CTE, linear
  • CTE, linear
  • Specific Heat Capacity
  • Specific Heat Capacity, Gas
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Melting Point
  • Boiling Point
  • Heat of Formation, Crystal
  • Heat of Formation, Gas
  • Emissivity (0-1)
  • Emissivity (0-1)
  • Niobium, Nb (Columbium, Cb)
  
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