AWS BAg-21 vs. AWS BAg-4
Both AWS BAg-21 and AWS BAg-4 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 71% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is AWS BAg-21 and the bottom bar is AWS BAg-4.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 85 | |
| 91 |
| Poisson's Ratio | 0.36 | |
| 0.33 |
| Shear Modulus, GPa | 31 | |
| 34 |
| Tensile Strength: Ultimate (UTS), MPa | 150 | |
| 150 |
Thermal Properties
| Brazing Temperature, °C | 700 to 900 | |
| 740 to 900 |
| Latent Heat of Fusion, J/g | 140 | |
| 140 |
| Melting Completion (Liquidus), °C | 800 | |
| 780 |
| Melting Onset (Solidus), °C | 690 | |
| 670 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 330 |
| Thermal Expansion, µm/m-K | 19 | |
| 21 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.8 | |
| 8.9 |
| Embodied Energy, MJ/kg | 970 | |
| 630 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.8 | |
| 5.7 |
| Stiffness to Weight: Bending, points | 15 | |
| 17 |
| Strength to Weight: Axial, points | 4.2 | |
| 4.7 |
| Strength to Weight: Bending, points | 6.4 | |
| 7.1 |
| Thermal Shock Resistance, points | 6.6 | |
| 5.7 |
Alloy Composition
| Copper (Cu), % | 27.5 to 29.5 | |
| 29 to 31 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 1.5 to 2.5 |
| Silver (Ag), % | 62 to 64 | |
| 39 to 41 |
| Tin (Sn), % | 5.0 to 7.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 26 to 30 |
| Residuals, % | 0 | |
| 0 to 0.15 |