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
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.57 g/cm³ |
Molar mass | 92.91 g/mol | |
Neutron capture cross-section | 23.0 °C | 0 m² |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
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
| Property | Temperature | Value | Comment |
|---|---|---|---|
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
| Property | Temperature | Value |
|---|---|---|
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
| Property | Temperature | Value |
|---|---|---|
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. | |
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