ASTM B631 Class A vs. 90-platinum 10-iridium
Both ASTM B631 class A and 90-platinum 10-iridium are otherwise unclassified metals. There are 9 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is ASTM B631 class A and the bottom bar is 90-platinum 10-iridium.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 15 | |
| 22 |
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 200 |
| Latent Heat of Fusion, J/g | 160 | |
| 100 |
| Poisson's Ratio | 0.3 | |
| 0.38 |
| Shear Modulus, GPa | 85 to 86 | |
| 74 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 130 |
| Stiffness to Weight: Axial, points | 8.5 | |
| 5.3 |
| Stiffness to Weight: Bending, points | 14 | |
| 9.1 |
| Thermal Expansion, µm/m-K | 11 | |
| 8.6 |