AWS BAu-2 vs. ASTM B617 Coin Silver
Both AWS BAu-2 and ASTM B617 coin silver are otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AWS BAu-2 and the bottom bar is ASTM B617 coin silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 75 |
| Poisson's Ratio | 0.4 | |
| 0.37 |
| Shear Modulus, GPa | 36 | |
| 28 |
| Tensile Strength: Ultimate (UTS), MPa | 150 | |
| 290 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 92 | |
| 120 |
| Melting Completion (Liquidus), °C | 890 | |
| 870 |
| Melting Onset (Solidus), °C | 890 | |
| 780 |
| Specific Heat Capacity, J/kg-K | 180 | |
| 250 |
| Thermal Expansion, µm/m-K | 15 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.3 | |
| 4.1 |
| Stiffness to Weight: Bending, points | 9.1 | |
| 14 |
| Strength to Weight: Axial, points | 2.4 | |
| 7.7 to 14 |
| Strength to Weight: Bending, points | 3.6 | |
| 9.3 to 14 |
| Thermal Shock Resistance, points | 7.1 | |
| 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), % | 19.4 to 20.5 | |
| 9.0 to 10.4 |
| Gold (Au), % | 79.5 to 80.5 | |
| 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 0.15 | |
| 0 to 0.060 |