85-platinum 15-iridium vs. Grade 366 Molybdenum
Both 85-platinum 15-iridium and grade 366 molybdenum are otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is 85-platinum 15-iridium and the bottom bar is grade 366 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 300 |
| Elongation at Break, % | 5.5 to 34 | |
| 2.2 |
| Poisson's Ratio | 0.38 | |
| 0.3 |
| Shear Modulus, GPa | 81 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 560 to 730 | |
| 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 110 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 130 | |
| 210 |
| Thermal Expansion, µm/m-K | 8.4 | |
| 7.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 22 | |
| 12 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.7 | |
| 14 |
| Stiffness to Weight: Bending, points | 9.3 | |
| 18 |
| Strength to Weight: Axial, points | 7.1 to 9.3 | |
| 13 |
| Strength to Weight: Bending, points | 6.9 to 8.3 | |
| 13 |
| Thermal Shock Resistance, points | 21 to 28 | |
| 18 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Iridium (Ir), % | 14.5 to 15.5 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.010 |
| Molybdenum (Mo), % | 0 | |
| 66.9 to 73 |
| Nickel (Ni), % | 0 | |
| 0 to 0.0020 |
| Nitrogen (N), % | 0 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0025 |
| Platinum (Pt), % | 84.3 to 85.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 27 to 33 |
| Residuals, % | 0 to 0.2 | |
| 0 |