ASTM B780 Alloy vs. C55280 Copper
ASTM B780 alloy belongs to the otherwise unclassified metals classification, while C55280 copper belongs to the copper alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 13 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 B780 alloy and the bottom bar is C55280 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 110 |
| Poisson's Ratio | 0.36 | |
| 0.34 |
| Shear Modulus, GPa | 30 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 330 to 590 | |
| 180 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 190 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 410 |
| Thermal Expansion, µm/m-K | 18 | |
| 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.5 | |
| 6.9 |
| Stiffness to Weight: Bending, points | 14 | |
| 19 |
| Strength to Weight: Axial, points | 9.1 to 16 | |
| 5.9 |
| Strength to Weight: Bending, points | 11 to 15 | |
| 8.3 |
| Thermal Shock Resistance, points | 16 to 29 | |
| 7.4 |
Alloy Composition
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Copper (Cu), % | 23.5 to 25.7 | |
| 90.5 to 91.4 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Nickel (Ni), % | 0.35 to 0.65 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 6.8 to 7.2 |
| Silver (Ag), % | 74 to 76 | |
| 1.8 to 2.2 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.15 |