C55280 Copper vs. AWS BAu-2
C55280 copper belongs to the copper alloys classification, while AWS BAu-2 belongs to the otherwise unclassified metals. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 16 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is C55280 copper and the bottom bar is AWS BAu-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 100 |
| Poisson's Ratio | 0.34 | |
| 0.4 |
| Shear Modulus, GPa | 40 | |
| 36 |
| Tensile Strength: Ultimate (UTS), MPa | 180 | |
| 150 |
Thermal Properties
| Brazing Temperature, °C | 730 to 820 | |
| 890 to 1010 |
| Latent Heat of Fusion, J/g | 190 | |
| 92 |
| Melting Completion (Liquidus), °C | 790 | |
| 890 |
| Melting Onset (Solidus), °C | 640 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 180 |
| Thermal Expansion, µm/m-K | 16 | |
| 15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.5 | |
| 17 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.9 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 19 | |
| 9.1 |
| Strength to Weight: Axial, points | 5.9 | |
| 2.4 |
| Strength to Weight: Bending, points | 8.3 | |
| 3.6 |
| Thermal Shock Resistance, points | 7.4 | |
| 7.1 |
Alloy Composition
| Copper (Cu), % | 90.5 to 91.4 | |
| 19.4 to 20.5 |
| Gold (Au), % | 0 | |
| 79.5 to 80.5 |
| Phosphorus (P), % | 6.8 to 7.2 | |
| 0 |
| Silver (Ag), % | 1.8 to 2.2 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |