90-platinum 10-iridium vs. AWS BVAu-4
Both 90-platinum 10-iridium and AWS BVAu-4 are otherwise unclassified metals. There are 13 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is 90-platinum 10-iridium and the bottom bar is AWS BVAu-4.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Poisson's Ratio | 0.38 | |
| 0.4 |
| Shear Modulus, GPa | 74 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 550 | |
| 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 100 | |
| 100 |
| Specific Heat Capacity, J/kg-K | 130 | |
| 190 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 22 | |
| 17 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.3 | |
| 3.6 |
| Stiffness to Weight: Bending, points | 9.1 | |
| 9.3 |
| Strength to Weight: Axial, points | 4.2 to 7.1 | |
| 3.0 |
| Strength to Weight: Bending, points | 4.9 to 6.9 | |
| 4.2 |
| Thermal Shock Resistance, points | 13 to 22 | |
| 8.7 |
Alloy Composition
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| Cadmium (Cd), % | 0 | |
| 0 to 0.0010 |
| Carbon (C), % | 0 | |
| 0 to 0.0050 |
| Gold (Au), % | 0 | |
| 81.5 to 82.5 |
| Iridium (Ir), % | 9.5 to 10.5 | |
| 0 |
| Lead (Pb), % | 0 | |
| 0 to 0.0020 |
| Nickel (Ni), % | 0 | |
| 17.5 to 18.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.0020 |
| Platinum (Pt), % | 89.3 to 90.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0010 |
| Residuals, % | 0 to 0.2 | |
| 0 |