AWS BAg-21 vs. ZA-8
AWS BAg-21 belongs to the otherwise unclassified metals classification, while ZA-8 belongs to the zinc alloys. There are 16 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.
For each property being compared, the top bar is AWS BAg-21 and the bottom bar is ZA-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 85 | |
| 85 to 86 |
| Poisson's Ratio | 0.36 | |
| 0.26 |
| Shear Modulus, GPa | 31 | |
| 34 |
| Tensile Strength: Ultimate (UTS), MPa | 150 | |
| 210 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 110 |
| Melting Completion (Liquidus), °C | 800 | |
| 400 |
| Melting Onset (Solidus), °C | 690 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 440 |
| Thermal Expansion, µm/m-K | 19 | |
| 23 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.8 | |
| 6.3 |
| Embodied Energy, MJ/kg | 970 | |
| 62 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.8 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 15 | |
| 23 |
| Strength to Weight: Axial, points | 4.2 | |
| 9.3 to 17 |
| Strength to Weight: Bending, points | 6.4 | |
| 12 to 18 |
| Thermal Shock Resistance, points | 6.6 | |
| 7.6 to 13 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 8.0 to 8.8 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0060 |
| Copper (Cu), % | 27.5 to 29.5 | |
| 0.8 to 1.3 |
| Iron (Fe), % | 0 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 | |
| 0 to 0.0060 |
| Magnesium (Mg), % | 0 | |
| 0.015 to 0.030 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.045 |
| Silver (Ag), % | 62 to 64 | |
| 0 |
| Tin (Sn), % | 5.0 to 7.0 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 0 | |
| 89.7 to 91.2 |
| Residuals, % | 0 to 0.15 | |
| 0 |