Niobium (Nb pure >99.9%) vs Ta-2.5W (Ta-97.5-W-2.5) annealed
Property comparison of Niobium (Nb pure >99.9%) and Ta-2.5W (Ta-97.5-W-2.5) annealed, both refractory.
| Property | Niobium (Nb pure >99.9%) | Ta-2.5W (Ta-97.5-W-2.5) annealed | Difference |
|---|---|---|---|
| Elastic modulus | 105,000 MPa | 186,000 MPa | +77% |
| Density | 8,570 kg/m³ | 16,600 kg/m³ | +94% |
| Coefficient of thermal expansion | 0.000007 1/K | 0.000006 1/K | -12% |
| Melting point | 2,477 °C | 2,996 °C | +21% |
Difference is Ta-2.5W (Ta-97.5-W-2.5) annealed 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
- R05252
- standard
- ASTM B365 R05252 / Plansee Ta alloy product data
- 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