C72700 Copper-nickel vs. C71640 Copper-nickel
Both C72700 copper-nickel and C71640 copper-nickel are copper alloys. They have 75% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is C72700 copper-nickel and the bottom bar is C71640 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 140 |
| Poisson's Ratio | 0.34 | |
| 0.33 |
| Shear Modulus, GPa | 44 | |
| 52 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1070 | |
| 490 to 630 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1060 | |
| 190 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 260 |
| Melting Completion (Liquidus), °C | 1100 | |
| 1180 |
| Melting Onset (Solidus), °C | 930 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 410 |
| Thermal Conductivity, W/m-K | 54 | |
| 29 |
| Thermal Expansion, µm/m-K | 17 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 40 |
| Density, g/cm3 | 8.8 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 4.0 | |
| 5.0 |
| Embodied Energy, MJ/kg | 62 | |
| 73 |
| Embodied Water, L/kg | 350 | |
| 280 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1420 to 4770 | |
| 130 to 750 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 8.7 |
| Stiffness to Weight: Bending, points | 19 | |
| 20 |
| Strength to Weight: Axial, points | 14 to 34 | |
| 15 to 20 |
| Strength to Weight: Bending, points | 15 to 26 | |
| 16 to 18 |
| Thermal Diffusivity, mm2/s | 16 | |
| 8.2 |
| Thermal Shock Resistance, points | 16 to 38 | |
| 16 to 21 |
Alloy Composition
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| Copper (Cu), % | 82.1 to 86 | |
| 61.7 to 67.8 |
| Iron (Fe), % | 0 to 0.5 | |
| 1.7 to 2.3 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 to 0.050 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0.050 to 0.3 | |
| 1.5 to 2.5 |
| Nickel (Ni), % | 8.5 to 9.5 | |
| 29 to 32 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Tin (Sn), % | 5.5 to 6.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.3 | |
| 0 to 0.5 |