AWS ERNiCu-7 vs. C72500 Copper-nickel
AWS ERNiCu-7 belongs to the nickel alloys classification, while C72500 copper-nickel belongs to the copper alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is AWS ERNiCu-7 and the bottom bar is C72500 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 160 | |
| 120 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 61 | |
| 45 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 420 to 780 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 210 |
| Melting Completion (Liquidus), °C | 1280 | |
| 1130 |
| Melting Onset (Solidus), °C | 1240 | |
| 1060 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 390 |
| Thermal Conductivity, W/m-K | 20 | |
| 54 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.2 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 35 |
| Density, g/cm3 | 8.7 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 8.5 | |
| 3.6 |
| Embodied Energy, MJ/kg | 120 | |
| 55 |
| Embodied Water, L/kg | 250 | |
| 320 |
Common Calculations
| Stiffness to Weight: Axial, points | 10 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 21 | |
| 19 |
| Strength to Weight: Axial, points | 18 | |
| 13 to 24 |
| Strength to Weight: Bending, points | 17 | |
| 14 to 21 |
| Thermal Diffusivity, mm2/s | 5.3 | |
| 16 |
| Thermal Shock Resistance, points | 19 | |
| 14 to 27 |
Alloy Composition
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| Aluminum (Al), % | 0 to 1.3 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 |
| Copper (Cu), % | 18.3 to 36.5 | |
| 85.2 to 89.7 |
| Iron (Fe), % | 0 to 2.5 | |
| 0 to 0.6 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 4.0 | |
| 0 to 0.2 |
| Nickel (Ni), % | 62 to 69 | |
| 8.5 to 10.5 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 1.3 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.8 to 2.8 |
| Titanium (Ti), % | 1.5 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.5 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.2 |