AWS BAg-28 vs. AWS BAg-18
Both AWS BAg-28 and AWS BAg-18 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-28 and the bottom bar is AWS BAg-18.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 88 | |
82 |
Poisson's Ratio | 0.33 | |
0.36 |
Shear Modulus, GPa | 33 | |
30 |
Tensile Strength: Ultimate (UTS), MPa | 150 | |
170 |
Thermal Properties
Brazing Temperature, °C | 680 to 840 | |
720 to 980 |
Latent Heat of Fusion, J/g | 140 | |
130 |
Melting Completion (Liquidus), °C | 710 | |
720 |
Melting Onset (Solidus), °C | 650 | |
600 |
Specific Heat Capacity, J/kg-K | 320 | |
280 |
Thermal Expansion, µm/m-K | 21 | |
19 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.9 | |
9.7 |
Embodied Carbon, kg CO2/kg material | 40 | |
59 |
Embodied Energy, MJ/kg | 630 | |
930 |
Common Calculations
Stiffness to Weight: Axial, points | 5.6 | |
4.7 |
Stiffness to Weight: Bending, points | 17 | |
15 |
Strength to Weight: Axial, points | 4.7 | |
4.9 |
Strength to Weight: Bending, points | 7.1 | |
7.0 |
Thermal Shock Resistance, points | 5.8 | |
7.7 |
Alloy Composition
Copper (Cu), % | 29 to 31 | |
28.4 to 31.5 |
Silver (Ag), % | 39 to 41 | |
59 to 61 |
Tin (Sn), % | 1.5 to 2.5 | |
9.5 to 10.5 |
Zinc (Zn), % | 26 to 30 | |
0 |
Residuals, % | 0 | |
0 to 0.15 |