ASTM B540 Palladium vs. A242.0 Aluminum
ASTM B540 palladium belongs to the otherwise unclassified metals classification, while A242.0 aluminum belongs to the aluminum alloys. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is ASTM B540 palladium and the bottom bar is A242.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 73 |
| Elongation at Break, % | 1.1 to 14 | |
| 1.6 |
| Poisson's Ratio | 0.38 | |
| 0.33 |
| Shear Modulus, GPa | 39 | |
| 27 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1240 | |
| 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 390 |
| Melting Completion (Liquidus), °C | 1220 | |
| 680 |
| Melting Onset (Solidus), °C | 1020 | |
| 550 |
| Specific Heat Capacity, J/kg-K | 240 | |
| 870 |
| Thermal Expansion, µm/m-K | 14 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.9 to 5.5 | |
| 37 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 to 3.9 | |
| 110 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 3.1 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.7 | |
| 13 |
| Stiffness to Weight: Bending, points | 12 | |
| 45 |
| Strength to Weight: Axial, points | 18 to 27 | |
| 20 |
| Strength to Weight: Bending, points | 15 to 20 | |
| 26 |
| Thermal Shock Resistance, points | 41 to 61 | |
| 9.3 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 89.3 to 93.1 |
| Chromium (Cr), % | 0 | |
| 0.15 to 0.25 |
| Copper (Cu), % | 13.5 to 14.5 | |
| 3.7 to 4.5 |
| Gold (Au), % | 9.5 to 10.5 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.8 |
| Magnesium (Mg), % | 0 | |
| 1.2 to 1.7 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 | |
| 1.8 to 2.3 |
| Palladium (Pd), % | 34 to 36 | |
| 0 |
| Platinum (Pt), % | 9.5 to 10.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.6 |
| Silver (Ag), % | 29 to 31 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.070 to 0.2 |
| Zinc (Zn), % | 0.8 to 1.2 | |
| 0 to 0.1 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.15 |