ASTM B522 Class I vs. ASTM B540 Palladium
Both ASTM B522 class I and ASTM B540 palladium are otherwise unclassified metals. They have 41% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ASTM B522 class I and the bottom bar is ASTM B540 palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 110 |
| Elongation at Break, % | 1.1 to 29 | |
| 1.1 to 14 |
| Knoop Hardness | 88 to 150 | |
| 230 to 380 |
| Poisson's Ratio | 0.41 | |
| 0.38 |
| Shear Modulus, GPa | 34 | |
| 39 |
| Shear Strength, MPa | 180 to 280 | |
| 500 to 700 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 830 to 1240 |
| Tensile Strength: Yield (Proof), MPa | 120 to 210 | |
| 620 to 1000 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 140 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1220 |
| Melting Onset (Solidus), °C | 1030 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 240 |
| Thermal Expansion, µm/m-K | 15 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 4.9 to 5.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.8 | |
| 3.5 to 3.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 4.5 to 64 | |
| 13 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 75 to 230 | |
| 1790 to 4660 |
| Stiffness to Weight: Axial, points | 3.1 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 12 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 41 to 61 |
Alloy Composition
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 68 to 70 | |
| 9.5 to 10.5 |
| Palladium (Pd), % | 0 | |
| 34 to 36 |
| Platinum (Pt), % | 5.0 to 7.0 | |
| 9.5 to 10.5 |
| Silver (Ag), % | 23.5 to 26.5 | |
| 29 to 31 |
| Zinc (Zn), % | 0 | |
| 0.8 to 1.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |