Pure Niobium (Nb)

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Description

Niobium is resistant against many chemicals and can be easily formed even at low temperatures. Additionally, this high level of resistance is achieved at a relatively low weight.

This material data has been provided by Plansee.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

23.0 °C

8.57 g/cm³

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Molar mass

92.91 g/mol

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Neutron capture cross-section

23.0 °C

0 m²

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

104 GPa

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Hardness, Vickers, 10

23.0 °C

60 - 110 [-]

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recrystallized

Poisson's ratio

23.0 °C

0.35 [-]

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Thermal

PropertyTemperatureValueComment

Boiling point

4744 °C

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Coefficient of thermal expansion

23.0 °C

7.1E-6 1/K

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Crystallization temperature

850 - 1300 °C

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annealing time: 1 hour

Melting point

2468 °C

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Specific heat capacity

23.0 °C

270 J/(kg·K)

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Thermal conductivity

23.0 °C

52 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

23.0 °C

7.00E+6 S/m

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Electrical resistivity

23.0 °C

1.4E-7 Ω·m

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Electron work function

23.0 °C

4.3 eV

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Superconductive transition temperature

-263.95 °C

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Acoustical

PropertyTemperatureValue

Sound speed, longitudinal

23.0 °C

4900 m/s

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Sound speed, transversal

23.0 °C

2100 m/s

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Technological properties

Property
Application areas

This material can be used to manufacture coin inserts of all colors, corrosion-resistant evaporation boats for use in coating technology, and dimensionally stable crucibles for diamond growth. Thanks to its high level of biocompatibility, niobium is also used as a material for implants. Thanks to its high transition temperature, niobium is the perfect material for superconducting cables and magnets.