AWS BAu-6 vs. AWS BAu-5
Both AWS BAu-6 and AWS BAu-5 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 60% of their average alloy composition in common.
For each property being compared, the top bar is AWS BAu-6 and the bottom bar is AWS BAu-5.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 140 |
| Poisson's Ratio | 0.39 | |
| 0.37 |
| Shear Modulus, GPa | 43 | |
| 50 |
| Tensile Strength: Ultimate (UTS), MPa | 190 | |
| 210 |
Thermal Properties
| Brazing Temperature, °C | 1050 to 1120 | |
| 1170 to 1230 |
| Latent Heat of Fusion, J/g | 120 | |
| 180 |
| Melting Completion (Liquidus), °C | 1050 | |
| 1170 |
| Melting Onset (Solidus), °C | 1010 | |
| 1140 |
| Specific Heat Capacity, J/kg-K | 210 | |
| 280 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 16 | |
| 13 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.0 | |
| 5.8 |
| Stiffness to Weight: Bending, points | 10 | |
| 13 |
| Strength to Weight: Axial, points | 3.2 | |
| 4.5 |
| Strength to Weight: Bending, points | 4.5 | |
| 6.0 |
| Thermal Shock Resistance, points | 8.5 | |
| 9.0 |
Alloy Composition
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| Gold (Au), % | 69.5 to 70.5 | |
| 29.5 to 30.5 |
| Nickel (Ni), % | 21.5 to 22.5 | |
| 35.5 to 36.4 |
| Palladium (Pd), % | 7.5 to 8.5 | |
| 33.5 to 34.5 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |