ASTM B628 Ag-Cu vs. C68700 Brass
ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while C68700 brass belongs to the copper alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is C68700 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 110 |
| Poisson's Ratio | 0.36 | |
| 0.32 |
| Shear Modulus, GPa | 31 | |
| 41 |
| Tensile Strength: Ultimate (UTS), MPa | 350 to 760 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 190 |
| Melting Completion (Liquidus), °C | 780 | |
| 970 |
| Melting Onset (Solidus), °C | 780 | |
| 930 |
| Specific Heat Capacity, J/kg-K | 280 | |
| 400 |
| Thermal Expansion, µm/m-K | 19 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 84 | |
| 23 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 75 | |
| 25 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.6 | |
| 7.3 |
| Stiffness to Weight: Bending, points | 14 | |
| 19 |
| Strength to Weight: Axial, points | 9.5 to 21 | |
| 13 |
| Strength to Weight: Bending, points | 11 to 18 | |
| 14 |
| Thermal Shock Resistance, points | 16 to 34 | |
| 13 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 1.8 to 2.5 |
| Arsenic (As), % | 0 | |
| 0.020 to 0.1 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 26.6 to 29 | |
| 76 to 79 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.060 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.070 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silver (Ag), % | 71 to 73 | |
| 0 |
| Zinc (Zn), % | 0 to 0.060 | |
| 17.8 to 22.2 |
| Residuals, % | 0 to 0.21 | |
| 0 to 0.5 |