C71000 Copper-nickel vs. AWS E33-31
C71000 copper-nickel belongs to the copper alloys classification, while AWS E33-31 belongs to the iron alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is C71000 copper-nickel and the bottom bar is AWS E33-31.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 130 | |
| 210 |
| Poisson's Ratio | 0.33 | |
| 0.27 |
| Shear Modulus, GPa | 49 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 320 to 560 | |
| 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 230 | |
| 320 |
| Melting Completion (Liquidus), °C | 1200 | |
| 1380 |
| Melting Onset (Solidus), °C | 1150 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 480 |
| Thermal Expansion, µm/m-K | 15 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 36 |
| Density, g/cm3 | 8.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.3 | |
| 6.0 |
| Embodied Energy, MJ/kg | 63 | |
| 86 |
| Embodied Water, L/kg | 290 | |
| 260 |
Common Calculations
| Stiffness to Weight: Axial, points | 8.2 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 25 |
| Strength to Weight: Axial, points | 10 to 18 | |
| 28 |
| Strength to Weight: Bending, points | 12 to 17 | |
| 24 |
| Thermal Shock Resistance, points | 12 to 20 | |
| 19 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 31 to 35 |
| Copper (Cu), % | 73.5 to 80.5 | |
| 0.4 to 0.8 |
| Iron (Fe), % | 0.5 to 1.0 | |
| 24.7 to 34.8 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 2.5 to 4.0 |
| Molybdenum (Mo), % | 0 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 19 to 23 | |
| 30 to 32 |
| Nitrogen (N), % | 0 | |
| 0.3 to 0.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 | |
| 0 to 0.9 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |