ASTM B628 Ag-Cu vs. ZA-8
ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while ZA-8 belongs to the zinc alloys. There are 19 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is ZA-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 85 to 86 |
| Elongation at Break, % | 1.1 to 17 | |
| 1.3 to 8.0 |
| Poisson's Ratio | 0.36 | |
| 0.26 |
| Shear Modulus, GPa | 31 | |
| 34 |
| Shear Strength, MPa | 210 to 430 | |
| 240 to 280 |
| Tensile Strength: Ultimate (UTS), MPa | 350 to 760 | |
| 210 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 110 |
| Melting Completion (Liquidus), °C | 780 | |
| 400 |
| Melting Onset (Solidus), °C | 780 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 440 |
| Thermal Expansion, µm/m-K | 19 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 84 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 75 | |
| 40 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 6.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.6 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 14 | |
| 23 |
| Strength to Weight: Axial, points | 9.5 to 21 | |
| 9.3 to 17 |
| Strength to Weight: Bending, points | 11 to 18 | |
| 12 to 18 |
| Thermal Shock Resistance, points | 16 to 34 | |
| 7.6 to 13 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 8.0 to 8.8 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 to 0.0060 |
| Copper (Cu), % | 26.6 to 29 | |
| 0.8 to 1.3 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.0060 |
| Magnesium (Mg), % | 0 | |
| 0.015 to 0.030 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.020 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.045 |
| Silver (Ag), % | 71 to 73 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0 to 0.0030 |
| Zinc (Zn), % | 0 to 0.060 | |
| 89.7 to 91.2 |
| Residuals, % | 0 to 0.21 | |
| 0 |