AWS BAu-4 vs. AWS BVAu-8
Both AWS BAu-4 and AWS BVAu-8 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is AWS BAu-4 and the bottom bar is AWS BVAu-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Poisson's Ratio | 0.4 | |
| 0.42 |
| Shear Modulus, GPa | 41 | |
| 36 |
| Tensile Strength: Ultimate (UTS), MPa | 200 | |
| 140 |
Thermal Properties
| Brazing Temperature, °C | 950 to 1000 | |
| 1240 to 1270 |
| Latent Heat of Fusion, J/g | 100 | |
| 71 |
| Melting Completion (Liquidus), °C | 950 | |
| 1240 |
| Melting Onset (Solidus), °C | 950 | |
| 1200 |
| Specific Heat Capacity, J/kg-K | 190 | |
| 140 |
| Thermal Expansion, µm/m-K | 14 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 19 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.6 | |
| 3.0 |
| Stiffness to Weight: Bending, points | 9.3 | |
| 8.3 |
| Strength to Weight: Axial, points | 3.2 | |
| 2.1 |
| Strength to Weight: Bending, points | 4.4 | |
| 3.2 |
| Thermal Shock Resistance, points | 9.2 | |
| 7.1 |
Alloy Composition
| Cadmium (Cd), % | 0 | |
| 0 to 0.0010 |
| Carbon (C), % | 0 | |
| 0 to 0.0050 |
| Gold (Au), % | 81.5 to 82.5 | |
| 91 to 93 |
| Lead (Pb), % | 0 | |
| 0 to 0.0020 |
| Nickel (Ni), % | 17.4 to 18.5 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 7.0 to 9.0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.0020 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0010 |
| Residuals, % | 0 to 0.15 | |
| 0 |