1/8-hard ASTM B617 vs. 1/8-hard ASTM B780 Alloy
Both 1/8-hard ASTM B617 and 1/8-hard ASTM B780 alloy are otherwise unclassified metals. Both are furnished in the 1/8-hard temper. They have 85% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is 1/8-hard ASTM B617 and the bottom bar is 1/8-hard ASTM B780 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 75 | |
| 83 |
| Elongation at Break, % | 9.0 | |
| 5.6 |
| Poisson's Ratio | 0.37 | |
| 0.36 |
| Shear Modulus, GPa | 28 | |
| 30 |
| Shear Strength, MPa | 190 | |
| 230 |
| Tensile Strength: Ultimate (UTS), MPa | 330 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 120 | |
| 140 |
| Melting Completion (Liquidus), °C | 870 | |
| 860 |
| Specific Heat Capacity, J/kg-K | 250 | |
| 270 |
| Thermal Expansion, µm/m-K | 19 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 83 | |
| 74 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 72 | |
| 66 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 | |
| 4.5 |
| Stiffness to Weight: Bending, points | 14 | |
| 14 |
| Strength to Weight: Axial, points | 8.7 | |
| 11 |
| Strength to Weight: Bending, points | 10 | |
| 12 |
| Thermal Shock Resistance, points | 16 | |
| 19 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 to 0.050 |
| Copper (Cu), % | 9.0 to 10.4 | |
| 23.5 to 25.7 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 to 0.030 |
| Nickel (Ni), % | 0 to 0.010 | |
| 0.35 to 0.65 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 |
| Silver (Ag), % | 89.6 to 91 | |
| 74 to 76 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 to 0.060 |
| Residuals, % | 0 to 0.060 | |
| 0 |