Tantalum (Ta pure >99.7%) vs Tungsten (W pure >99.95%)
Property comparison of Tantalum (Ta pure >99.7%) and Tungsten (W pure >99.95%), both refractory.
| Property | Tantalum (Ta pure >99.7%) | Tungsten (W pure >99.95%) | Difference |
|---|---|---|---|
| Yield strength | 165 MPa | 750 MPa | +355% |
| Tensile strength | 270 MPa | 980 MPa | +263% |
| Elongation | 30 % | 2 % | -93% |
| Elastic modulus | 186,000 MPa | 400,000 MPa | +115% |
| Shear modulus | 68,000 MPa | 156,000 MPa | +129% |
| Poisson ratio | 0.35 | 0.28 | -20% |
| Density | 16,650 kg/m³ | 19,300 kg/m³ | +16% |
| Brinell hardness | 100 HB | 310 HB | +210% |
| Thermal conductivity | 57 W/m·K | 173 W/m·K | +204% |
| Specific heat | 140 J/kg·K | 134 J/kg·K | -4% |
| Coefficient of thermal expansion | 0.000007 1/K | 0.000005 1/K | -31% |
| Melting point | 2,996 °C | 3,422 °C | +14% |
Difference is Tungsten (W pure >99.95%) relative to Tantalum (Ta pure >99.7%). 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
- Ta R05200
- standard
- ASTM
- heat treatment
- Annealed
- grade
- W pure
- standard
- ASTM
- heat treatment
- Stress-Relieved
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