ASTM B617 Coin Silver vs. C72900 Copper-nickel
ASTM B617 coin silver belongs to the otherwise unclassified metals classification, while C72900 copper-nickel belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is ASTM B617 coin silver and the bottom bar is C72900 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 75 | |
| 120 |
| Elongation at Break, % | 1.1 to 22 | |
| 6.0 to 20 |
| Poisson's Ratio | 0.37 | |
| 0.34 |
| Shear Modulus, GPa | 28 | |
| 45 |
| Shear Strength, MPa | 180 to 290 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 520 | |
| 870 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 210 |
| Melting Completion (Liquidus), °C | 870 | |
| 1120 |
| Melting Onset (Solidus), °C | 780 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 250 | |
| 380 |
| Thermal Expansion, µm/m-K | 19 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 83 | |
| 7.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 72 | |
| 8.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.8 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 14 | |
| 19 |
| Strength to Weight: Axial, points | 7.7 to 14 | |
| 27 to 34 |
| Strength to Weight: Bending, points | 9.3 to 14 | |
| 23 to 27 |
| Thermal Shock Resistance, points | 14 to 25 | |
| 31 to 38 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 9.0 to 10.4 | |
| 74.1 to 78 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.020 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.15 |
| Manganese (Mn), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 to 0.010 | |
| 14.5 to 15.5 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 |
| Silver (Ag), % | 89.6 to 91 | |
| 0 |
| Tin (Sn), % | 0 | |
| 7.5 to 8.5 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.3 |