Niobium (Nb pure >99.9%) vs Rhenium (Re pure >99.9%)
Property comparison of Niobium (Nb pure >99.9%) and Rhenium (Re pure >99.9%), both refractory.
| Property | Niobium (Nb pure >99.9%) | Rhenium (Re pure >99.9%) | Difference |
|---|---|---|---|
| Elastic modulus | 105,000 MPa | 463,000 MPa | +341% |
| Shear modulus | 38,000 MPa | 178,000 MPa | +368% |
| Poisson ratio | 0.4 | 0.3 | -25% |
| Density | 8,570 kg/m³ | 21,020 kg/m³ | +145% |
| Brinell hardness | 75 HB | 134 HB | +79% |
| Thermal conductivity | 54 W/m·K | 48 W/m·K | -11% |
| Specific heat | 265 J/kg·K | 137 J/kg·K | -48% |
| Coefficient of thermal expansion | 0.000007 1/K | 0.000006 1/K | -15% |
| Melting point | 2,477 °C | 3,186 °C | +29% |
Difference is Rhenium (Re pure >99.9%) relative to Niobium (Nb pure >99.9%). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- R04200
- standard
- CRC Handbook of Chemistry and Physics 103rd Ed. / ASTM B392
- heat treatment
- annealed
- grade
- —
- standard
- CRC Handbook of Chemistry and Physics 103rd Ed.
- heat treatment
- annealed
What else is in Engineering Database
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators