AWS BAu-1 vs. AWS BAu-6
Both AWS BAu-1 and AWS BAu-6 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much.
For each property being compared, the top bar is AWS BAu-1 and the bottom bar is AWS BAu-6.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 120 |
| Poisson's Ratio | 0.37 | |
| 0.39 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 210 | |
| 190 |
Thermal Properties
| Brazing Temperature, °C | 1020 to 1090 | |
| 1050 to 1120 |
| Latent Heat of Fusion, J/g | 150 | |
| 120 |
| Melting Completion (Liquidus), °C | 1020 | |
| 1050 |
| Melting Onset (Solidus), °C | 990 | |
| 1010 |
| Specific Heat Capacity, J/kg-K | 290 | |
| 210 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 16 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.7 | |
| 4.0 |
| Stiffness to Weight: Bending, points | 12 | |
| 10 |
| Strength to Weight: Axial, points | 4.5 | |
| 3.2 |
| Strength to Weight: Bending, points | 6.1 | |
| 4.5 |
| Thermal Shock Resistance, points | 8.5 | |
| 8.5 |
Alloy Composition
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| Copper (Cu), % | 61.9 to 63 | |
| 0 |
| Gold (Au), % | 37 to 38 | |
| 69.5 to 70.5 |
| Nickel (Ni), % | 0 | |
| 21.5 to 22.5 |
| Palladium (Pd), % | 0 | |
| 7.5 to 8.5 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |