ASTM B628 Ag-Cu vs. ASTM B617 Coin Silver
Both ASTM B628 Ag-Cu and ASTM B617 coin silver are otherwise unclassified metals. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is ASTM B617 coin silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 75 |
| Elongation at Break, % | 1.1 to 17 | |
| 1.1 to 22 |
| Poisson's Ratio | 0.36 | |
| 0.37 |
| Shear Modulus, GPa | 31 | |
| 28 |
| Shear Strength, MPa | 210 to 430 | |
| 180 to 290 |
| Tensile Strength: Ultimate (UTS), MPa | 350 to 760 | |
| 290 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 120 |
| Melting Completion (Liquidus), °C | 780 | |
| 870 |
| Melting Onset (Solidus), °C | 780 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 250 |
| Thermal Expansion, µm/m-K | 19 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 84 | |
| 83 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 75 | |
| 72 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.6 | |
| 4.1 |
| Stiffness to Weight: Bending, points | 14 | |
| 14 |
| Strength to Weight: Axial, points | 9.5 to 21 | |
| 7.7 to 14 |
| Strength to Weight: Bending, points | 11 to 18 | |
| 9.3 to 14 |
| Thermal Shock Resistance, points | 16 to 34 | |
| 14 to 25 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 to 0.0050 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 to 0.050 |
| Copper (Cu), % | 26.6 to 29 | |
| 9.0 to 10.4 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.030 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.020 |
| Silver (Ag), % | 71 to 73 | |
| 89.6 to 91 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 to 0.060 |
| Residuals, % | 0 | |
| 0 to 0.060 |