Cold Worked R05200 Tantalum vs. Work Hardened 85-platinum 15-iridium
Both cold worked R05200 tantalum and work hardened 85-platinum 15-iridium are otherwise unclassified metals. Both are furnished in the cold worked (strain hardened) condition. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is cold worked R05200 tantalum and the bottom bar is work hardened 85-platinum 15-iridium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 1.1 | |
| 5.5 |
| Poisson's Ratio | 0.34 | |
| 0.38 |
| Shear Modulus, GPa | 69 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 730 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 110 |
| Melting Completion (Liquidus), °C | 3020 | |
| 1820 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 130 |
| Thermal Expansion, µm/m-K | 6.5 | |
| 8.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 22 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.2 | |
| 5.7 |
| Stiffness to Weight: Bending, points | 11 | |
| 9.3 |
| Strength to Weight: Axial, points | 9.0 | |
| 9.3 |
| Strength to Weight: Bending, points | 8.8 | |
| 8.3 |
| Thermal Shock Resistance, points | 32 | |
| 28 |
Alloy Composition
| Carbon (C), % | 0 to 0.010 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0015 | |
| 0 |
| Iridium (Ir), % | 0 | |
| 14.5 to 15.5 |
| Iron (Fe), % | 0 to 0.010 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.020 | |
| 0 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 |
| Oxygen (O), % | 0 to 0.015 | |
| 0 |
| Platinum (Pt), % | 0 | |
| 84.3 to 85.5 |
| Silicon (Si), % | 0 to 0.0050 | |
| 0 |
| Tantalum (Ta), % | 99.8 to 100 | |
| 0 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Tungsten (W), % | 0 to 0.050 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.2 |