AWS BVAu-8 vs. AWS BAu-5
Both AWS BVAu-8 and AWS BAu-5 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 BVAu-8 and the bottom bar is AWS BAu-5.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 140 |
| Poisson's Ratio | 0.42 | |
| 0.37 |
| Shear Modulus, GPa | 36 | |
| 50 |
| Tensile Strength: Ultimate (UTS), MPa | 140 | |
| 210 |
Thermal Properties
| Brazing Temperature, °C | 1240 to 1270 | |
| 1170 to 1230 |
| Latent Heat of Fusion, J/g | 71 | |
| 180 |
| Melting Completion (Liquidus), °C | 1240 | |
| 1170 |
| Melting Onset (Solidus), °C | 1200 | |
| 1140 |
| Specific Heat Capacity, J/kg-K | 140 | |
| 280 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 19 | |
| 13 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.0 | |
| 5.8 |
| Stiffness to Weight: Bending, points | 8.3 | |
| 13 |
| Strength to Weight: Axial, points | 2.1 | |
| 4.5 |
| Strength to Weight: Bending, points | 3.2 | |
| 6.0 |
| Thermal Shock Resistance, points | 7.1 | |
| 9.0 |
Alloy Composition
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| Cadmium (Cd), % | 0 to 0.0010 | |
| 0 |
| Carbon (C), % | 0 to 0.0050 | |
| 0 |
| Gold (Au), % | 91 to 93 | |
| 29.5 to 30.5 |
| Lead (Pb), % | 0 to 0.0020 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 35.5 to 36.4 |
| Palladium (Pd), % | 7.0 to 9.0 | |
| 33.5 to 34.5 |
| Phosphorus (P), % | 0 to 0.0020 | |
| 0 |
| Zinc (Zn), % | 0 to 0.0010 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |