ASTM B522 Class I vs. ASTM B563 Pd-Ag-Cu
Both ASTM B522 class I and ASTM B563 Pd-Ag-Cu are otherwise unclassified metals. They have a modest 26% 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 (3, 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 B563 Pd-Ag-Cu.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 100 |
| Elongation at Break, % | 1.1 to 29 | |
| 7.0 to 17 |
| Knoop Hardness | 88 to 150 | |
| 210 to 350 |
| Poisson's Ratio | 0.41 | |
| 0.37 |
| Shear Modulus, GPa | 34 | |
| 37 |
| Shear Strength, MPa | 180 to 280 | |
| 470 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 760 to 1170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 150 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1180 |
| Melting Onset (Solidus), °C | 1030 | |
| 1030 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 260 |
| Thermal Expansion, µm/m-K | 15 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 5.6 to 6.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.8 | |
| 4.6 to 5.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 11 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.1 | |
| 5.2 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 14 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 19 to 30 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 17 to 22 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 39 to 61 |
Alloy Composition
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| Copper (Cu), % | 0 | |
| 15.5 to 16.5 |
| Gold (Au), % | 68 to 70 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0.8 to 1.2 |
| Palladium (Pd), % | 0 | |
| 43 to 45 |
| Platinum (Pt), % | 5.0 to 7.0 | |
| 0.8 to 1.2 |
| Silver (Ag), % | 23.5 to 26.5 | |
| 37 to 39 |
| Residuals, % | 0 to 0.35 | |
| 0 to 0.4 |