7075 Aluminum vs. Potassium Bromide
7075 aluminum and potassium bromide belong to fundamentally different material chemistries. 7075 aluminum is a metal, while potassium bromide is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (24, in this case) are not shown.
For each property being compared, the top bar is 7075 aluminum and the bottom bar is potassium bromide.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 24 |
| Poisson's Ratio | 0.32 | |
| 0.17 |
| Shear Modulus, GPa | 26 | |
| 7.0 |
Thermal Properties
| Melting Onset (Solidus), °C | 480 | |
| 730 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 450 |
| Thermal Conductivity, W/m-K | 130 | |
| 4.8 |
| Thermal Expansion, µm/m-K | 23 | |
| 39 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.0 | |
| 2.8 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 46 | |
| 35 |
| Thermal Diffusivity, mm2/s | 50 | |
| 3.9 |