ASTM B596 Au-Cu vs. ASTM B617 Coin Silver
Both ASTM B596 Au-Cu and ASTM B617 coin silver are otherwise unclassified metals.
For each property being compared, the top bar is ASTM B596 Au-Cu and the bottom bar is ASTM B617 coin silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 75 |
| Elongation at Break, % | 4.3 to 17 | |
| 1.1 to 22 |
| Poisson's Ratio | 0.41 | |
| 0.37 |
| Shear Modulus, GPa | 36 | |
| 28 |
| Shear Strength, MPa | 280 to 360 | |
| 180 to 290 |
| Tensile Strength: Ultimate (UTS), MPa | 450 to 620 | |
| 290 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 120 |
| Melting Completion (Liquidus), °C | 1060 | |
| 870 |
| Melting Onset (Solidus), °C | 930 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 150 | |
| 250 |
| Thermal Expansion, µm/m-K | 14 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 14 | |
| 83 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.7 | |
| 72 |
Otherwise Unclassified Properties
| Density, g/cm3 | 18 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.1 | |
| 4.1 |
| Stiffness to Weight: Bending, points | 8.5 | |
| 14 |
| Strength to Weight: Axial, points | 6.8 to 9.4 | |
| 7.7 to 14 |
| Strength to Weight: Bending, points | 7.1 to 8.8 | |
| 9.3 to 14 |
| Thermal Shock Resistance, points | 22 to 30 | |
| 14 to 25 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 0 to 0.0050 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.050 |
| Copper (Cu), % | 9.0 to 11 | |
| 9.0 to 10.4 |
| Gold (Au), % | 89 to 91 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 | |
| 0 to 0.030 |
| Nickel (Ni), % | 0 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 | |
| 0 to 0.020 |
| Silver (Ag), % | 0 | |
| 89.6 to 91 |
| Zinc (Zn), % | 0 | |
| 0 to 0.060 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.060 |