AWS BAg-9 vs. AWS BAg-21
Both AWS BAg-9 and AWS BAg-21 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 83% of their average alloy composition in common.
For each property being compared, the top bar is AWS BAg-9 and the bottom bar is AWS BAg-21.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 82 | |
| 85 |
| Poisson's Ratio | 0.35 | |
| 0.36 |
| Shear Modulus, GPa | 31 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 140 | |
| 150 |
Thermal Properties
| Brazing Temperature, °C | 720 to 840 | |
| 700 to 900 |
| Latent Heat of Fusion, J/g | 130 | |
| 140 |
| Melting Completion (Liquidus), °C | 720 | |
| 800 |
| Melting Onset (Solidus), °C | 670 | |
| 690 |
| Specific Heat Capacity, J/kg-K | 290 | |
| 280 |
| Thermal Expansion, µm/m-K | 20 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 9.8 |
| Embodied Energy, MJ/kg | 980 | |
| 970 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.8 | |
| 4.8 |
| Stiffness to Weight: Bending, points | 15 | |
| 15 |
| Strength to Weight: Axial, points | 4.1 | |
| 4.2 |
| Strength to Weight: Bending, points | 6.3 | |
| 6.4 |
| Thermal Shock Resistance, points | 6.0 | |
| 6.6 |
Alloy Composition
| Copper (Cu), % | 19 to 21 | |
| 27.5 to 29.5 |
| Nickel (Ni), % | 0 | |
| 2.0 to 3.0 |
| Silver (Ag), % | 64 to 66 | |
| 62 to 64 |
| Tin (Sn), % | 0 | |
| 5.0 to 7.0 |
| Zinc (Zn), % | 13 to 17 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |