ASTM B540 Palladium vs. Commercially Pure Palladium
Both ASTM B540 palladium and commercially pure palladium are otherwise unclassified metals. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is ASTM B540 palladium and the bottom bar is commercially pure palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Elongation at Break, % | 1.1 to 14 | |
| 1.1 to 11 |
| Knoop Hardness | 230 to 380 | |
| 68 to 130 |
| Poisson's Ratio | 0.38 | |
| 0.39 |
| Shear Modulus, GPa | 39 | |
| 43 |
| Shear Strength, MPa | 500 to 700 | |
| 120 to 200 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1240 | |
| 200 to 380 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 160 |
| Melting Completion (Liquidus), °C | 1220 | |
| 1550 |
| Melting Onset (Solidus), °C | 1020 | |
| 1550 |
| Specific Heat Capacity, J/kg-K | 240 | |
| 240 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.9 to 5.5 | |
| 16 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 to 3.9 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 12 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.7 | |
| 5.6 |
| Stiffness to Weight: Bending, points | 12 | |
| 14 |
| Strength to Weight: Axial, points | 18 to 27 | |
| 4.5 to 8.8 |
| Strength to Weight: Bending, points | 15 to 20 | |
| 6.2 to 9.7 |
| Thermal Shock Resistance, points | 41 to 61 | |
| 9.8 to 19 |
Alloy Composition
| Copper (Cu), % | 13.5 to 14.5 | |
| 0 |
| Gold (Au), % | 9.5 to 10.5 | |
| 0 |
| Palladium (Pd), % | 34 to 36 | |
| 99.8 to 100 |
| Platinum (Pt), % | 9.5 to 10.5 | |
| 0 |
| Silver (Ag), % | 29 to 31 | |
| 0 |
| Zinc (Zn), % | 0.8 to 1.2 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.2 |