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Pure Niobium (Nb): High-Strength, Low-Weight Material for Advanced Applications

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.

Properties

General

PropertyTemperatureValue

Density

23.0 °C

8.57 g/cm³

Molar mass

92.91 g/mol

Neutron capture cross-section

23.0 °C

0 m²

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

104 GPa

Hardness, Vickers, 10

23.0 °C

60 - 110 [-]

recrystallized

Poisson's ratio

23.0 °C

0.35 [-]

Thermal

PropertyTemperatureValueComment

Boiling point

4744 °C

Coefficient of thermal expansion

23.0 °C

7.1E-6 1/K

Crystallization temperature

850 - 1300 °C

annealing time: 1 hour

Melting point

2468 °C

Specific heat capacity

23.0 °C

270 J/(kg·K)

Thermal conductivity

23.0 °C

52 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

23.0 °C

7.00E+6 S/m

Electrical resistivity

23.0 °C

1.4E-7 Ω·m

Electron work function

23.0 °C

4.3 eV

Superconductive transition temperature

-263.95 °C

Acoustical

PropertyTemperatureValue

Sound speed, longitudinal

23.0 °C

4900 m/s

Sound speed, transversal

23.0 °C

2100 m/s

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.


Metal

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