AWS BAu-3 vs. ASTM B596 Au-Cu
Both AWS BAu-3 and ASTM B596 Au-Cu are otherwise unclassified metals. They have 45% of their average alloy composition in common. There are 15 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AWS BAu-3 and the bottom bar is ASTM B596 Au-Cu.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Poisson's Ratio | 0.37 | |
| 0.41 |
| Shear Modulus, GPa | 41 | |
| 36 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 450 to 620 |
Thermal Properties
| Latent Heat of Fusion, J/g | 160 | |
| 77 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1060 |
| Melting Onset (Solidus), °C | 970 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 300 | |
| 150 |
| Thermal Expansion, µm/m-K | 16 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 18 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.0 | |
| 3.1 |
| Stiffness to Weight: Bending, points | 13 | |
| 8.5 |
| Strength to Weight: Axial, points | 4.9 | |
| 6.8 to 9.4 |
| Strength to Weight: Bending, points | 6.4 | |
| 7.1 to 8.8 |
| Thermal Shock Resistance, points | 8.7 | |
| 22 to 30 |
Alloy Composition
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| Copper (Cu), % | 60.9 to 63 | |
| 9.0 to 11 |
| Gold (Au), % | 34.5 to 35.5 | |
| 89 to 91 |
| Nickel (Ni), % | 2.5 to 3.5 | |
| 0 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.4 |