AWS BAu-5 vs. AWS BAg-8
Both AWS BAu-5 and AWS BAg-8 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition.
For each property being compared, the top bar is AWS BAu-5 and the bottom bar is AWS BAg-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 84 |
| Poisson's Ratio | 0.37 | |
| 0.36 |
| Shear Modulus, GPa | 50 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 210 | |
| 150 |
Thermal Properties
| Brazing Temperature, °C | 1170 to 1230 | |
| 770 to 890 |
| Latent Heat of Fusion, J/g | 180 | |
| 140 |
| Melting Completion (Liquidus), °C | 1170 | |
| 780 |
| Melting Onset (Solidus), °C | 1140 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 280 |
| Thermal Expansion, µm/m-K | 12 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.8 | |
| 4.6 |
| Stiffness to Weight: Bending, points | 13 | |
| 14 |
| Strength to Weight: Axial, points | 4.5 | |
| 4.1 |
| Strength to Weight: Bending, points | 6.0 | |
| 6.2 |
| Thermal Shock Resistance, points | 9.0 | |
| 6.7 |
Alloy Composition
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| Copper (Cu), % | 0 | |
| 26.9 to 29 |
| Gold (Au), % | 29.5 to 30.5 | |
| 0 |
| Nickel (Ni), % | 35.5 to 36.4 | |
| 0 |
| Palladium (Pd), % | 33.5 to 34.5 | |
| 0 |
| Silver (Ag), % | 0 | |
| 71 to 73 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |