AWS BAg-18 vs. AWS BAg-28
Both AWS BAg-18 and AWS BAg-28 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% of their average alloy composition in common.
For each property being compared, the top bar is AWS BAg-18 and the bottom bar is AWS BAg-28.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 82 | |
| 88 |
| Poisson's Ratio | 0.36 | |
| 0.33 |
| Shear Modulus, GPa | 30 | |
| 33 |
| Tensile Strength: Ultimate (UTS), MPa | 170 | |
| 150 |
Thermal Properties
| Brazing Temperature, °C | 720 to 980 | |
| 680 to 840 |
| Latent Heat of Fusion, J/g | 130 | |
| 140 |
| Melting Completion (Liquidus), °C | 720 | |
| 710 |
| Melting Onset (Solidus), °C | 600 | |
| 650 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 320 |
| Thermal Expansion, µm/m-K | 19 | |
| 21 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.7 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 59 | |
| 40 |
| Embodied Energy, MJ/kg | 930 | |
| 630 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.7 | |
| 5.6 |
| Stiffness to Weight: Bending, points | 15 | |
| 17 |
| Strength to Weight: Axial, points | 4.9 | |
| 4.7 |
| Strength to Weight: Bending, points | 7.0 | |
| 7.1 |
| Thermal Shock Resistance, points | 7.7 | |
| 5.8 |
Alloy Composition
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| Copper (Cu), % | 28.4 to 31.5 | |
| 29 to 31 |
| Silver (Ag), % | 59 to 61 | |
| 39 to 41 |
| Tin (Sn), % | 9.5 to 10.5 | |
| 1.5 to 2.5 |
| Zinc (Zn), % | 0 | |
| 26 to 30 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |