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Refractory Metals

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Niobium, Nb; High Purity
Categories: Metal; Nonferrous Metal; Niobium Alloy; Refractory Metal; Pure Element

Material Notes: EB-melted, swaged, and recrystallized at 1100ºC

Vendors: PLANSEE SE: Whether it's high temperatures, aggressive chemicals or extreme mechanical loading: PLANSEE supplies a suitable product solution in refractory metals or composite materials. As the world market leader in powder metallurgically produced high performance materials we combine outstanding materials knowledge with profound applications and technology know-how. Visit us at www.plansee.com.

Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com.

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Physical PropertiesOriginal ValueComments
Density 8.57 g/cc
a Lattice Constant 3.294 Å
Vapor Pressure 5.00e-11 bar
@Temperature 1800 °C
 4.00e-8 bar
@Temperature 2200 °C
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 92.91
Atomic Number 41
Atomic Volume 1.8e-029m^3
 
Mechanical PropertiesOriginal ValueComments
Hardness, Vickers 65
Tensile Strength, Ultimate 240 MPa
Tensile Strength, Yield 170 MPa
@Strain 0.2 %
Elongation at Break 50 %
Modulus of Elasticity 103 GPa
 75.0 GPa
@Temperature 1200 °C
 80.0 GPa
@Temperature 800 °C
 90.0 GPa
@Temperature 400 °C
Poissons Ratio 0.35
Shear Modulus 38.1 GPaCalculated
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000160 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 7.00 µm/m-°C
@Temperature 20.0 °C
 7.70 µm/m-°C
@Temperature 400 °C
 8.40 µm/m-°C
@Temperature 800 °C
 9.20 µm/m-°C
@Temperature 1200 °C
Specific Heat Capacity 0.268 J/g-°C
 0.290 J/g-°C
@Temperature 400 °C
 0.310 J/g-°C
@Temperature 800 °C
 0.340 J/g-°C
@Temperature 1200 °C
Thermal Conductivity 54.1 W/m-K
 50.0 W/m-K
@Temperature 20.0 °C
 58.0 W/m-K
@Temperature 400 °C
 62.0 W/m-K
@Temperature 600 °C
 64.0 W/m-K
@Temperature 800 °C
Melting Point 2467 °C
Boiling Point 4900 °C
 
Component Elements PropertiesOriginal ValueComments
Niobium, Nb (Columbium, Cb) 99.97 %

References for this datasheet.

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