AWS BAg-8a vs. AWS BAu-1
Both AWS BAg-8a and AWS BAu-1 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much.
For each property being compared, the top bar is AWS BAg-8a and the bottom bar is AWS BAu-1.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 110 |
| Poisson's Ratio | 0.36 | |
| 0.37 |
| Shear Modulus, GPa | 31 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 150 | |
| 210 |
Thermal Properties
| Brazing Temperature, °C | 720 to 870 | |
| 1020 to 1090 |
| Latent Heat of Fusion, J/g | 140 | |
| 150 |
| Melting Completion (Liquidus), °C | 770 | |
| 1020 |
| Melting Onset (Solidus), °C | 770 | |
| 990 |
| Specific Heat Capacity, J/kg-K | 290 | |
| 290 |
| Thermal Expansion, µm/m-K | 19 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 13 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.6 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 15 | |
| 12 |
| Strength to Weight: Axial, points | 4.2 | |
| 4.5 |
| Strength to Weight: Bending, points | 6.3 | |
| 6.1 |
| Thermal Shock Resistance, points | 6.7 | |
| 8.5 |
Alloy Composition
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| Copper (Cu), % | 26.4 to 28.8 | |
| 61.9 to 63 |
| Gold (Au), % | 0 | |
| 37 to 38 |
| Lithium (Li), % | 0.25 to 0.5 | |
| 0 |
| Silver (Ag), % | 71 to 73 | |
| 0 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |