| All data is for information only------(<---links) | |
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| PRODUCT DATA of Niobium |
| Material | Niobium |
| Chemical Composition | 100Nb |
| Name of Manufacturer | 7440-03-1 |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Equivalent Designations | Nb |
| Space Experience | Poor |
| PHYSICAL PROPERTIES |
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| Atomic Number | 41 |
| Atomic Weight | 92.9 amu |
| Work Function | 4.3 eV |
| Crystal Structure | Body centered cubic (bcc) |
| Surface Energy | 2640 to 2860 mJ/m^2 |
| Specific Gravity | 8.6 |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 105 GPa |
| Shear Modulus | 38 GPa |
| Bulk Modulus | 170 GPa |
| Poisson Ratio | 0.4 |
| Speed of Sound (longitudinal) | 4920 m/s |
| Speed of Sound (transverse) | 2100 m/s |
| Acoustic Impedance | 42.4 MRayls |
| ELECTRICAL PROPERTIES |
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| Electrical Volume Resistivity | 1.6e-7 ohm.m |
| Superconductivity Critical Temperature | -264 °C |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 54.1 W/m.K |
| Thermal Expansion Coefficient | 7.2 μstrain/°C |
| Melting Range | 2470 °C |
| Specific Heat | 0.268 J/g.K |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| EMF vs SCE | -0.3 V Remark: Measured in 3.5% NaCl solution Data Quality: Design Data |