ASTM B477 Au-Ni-Ag vs. ASTM B563 Pd-Ag-Cu
Both ASTM B477 Au-Ni-Ag and ASTM B563 Pd-Ag-Cu are otherwise unclassified metals. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much.
For each property being compared, the top bar is ASTM B477 Au-Ni-Ag and the bottom bar is ASTM B563 Pd-Ag-Cu.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 95 | |
| 100 |
| Elongation at Break, % | 5.5 to 11 | |
| 7.0 to 17 |
| Knoop Hardness | 100 to 190 | |
| 210 to 350 |
| Poisson's Ratio | 0.41 | |
| 0.37 |
| Shear Modulus, GPa | 34 | |
| 37 |
| Shear Strength, MPa | 190 to 320 | |
| 470 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 310 to 550 | |
| 760 to 1170 |
Thermal Properties
| Latent Heat of Fusion, J/g | 80 | |
| 150 |
| Melting Completion (Liquidus), °C | 1010 | |
| 1180 |
| Melting Onset (Solidus), °C | 930 | |
| 1030 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 260 |
| Thermal Expansion, µm/m-K | 15 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 14 | |
| 5.6 to 6.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.5 | |
| 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 | 5.0 to 9.0 | |
| 19 to 30 |
| Strength to Weight: Bending, points | 6.0 to 8.8 | |
| 17 to 22 |
| Thermal Shock Resistance, points | 16 to 28 | |
| 39 to 61 |
Alloy Composition
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| Copper (Cu), % | 0 | |
| 15.5 to 16.5 |
| Gold (Au), % | 74.2 to 75.8 | |
| 0 |
| Nickel (Ni), % | 2.6 to 3.4 | |
| 0.8 to 1.2 |
| Palladium (Pd), % | 0 | |
| 43 to 45 |
| Platinum (Pt), % | 0 | |
| 0.8 to 1.2 |
| Silver (Ag), % | 21.4 to 22.6 | |
| 37 to 39 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.4 |