O61 C71640 Copper-nickel vs. O61 C72200 Copper-nickel
Both O61 C71640 copper-nickel and O61 C72200 copper-nickel are copper alloys. Both are furnished in the O61 (annealed) temper. They have 83% of their average alloy composition in common.
For each property being compared, the top bar is O61 C71640 copper-nickel and the bottom bar is O61 C72200 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 130 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 52 | |
| 48 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 350 |
| Tensile Strength: Yield (Proof), MPa | 190 | |
| 130 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 220 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 230 |
| Melting Completion (Liquidus), °C | 1180 | |
| 1180 |
| Melting Onset (Solidus), °C | 1120 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 400 |
| Thermal Conductivity, W/m-K | 29 | |
| 34 |
| Thermal Expansion, µm/m-K | 15 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 6.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.1 | |
| 6.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 40 | |
| 36 |
| Density, g/cm3 | 8.9 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 5.0 | |
| 3.9 |
| Embodied Energy, MJ/kg | 73 | |
| 59 |
| Embodied Water, L/kg | 280 | |
| 300 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 | |
| 61 |
| Stiffness to Weight: Axial, points | 8.7 | |
| 8.0 |
| Stiffness to Weight: Bending, points | 20 | |
| 19 |
| Strength to Weight: Axial, points | 15 | |
| 11 |
| Strength to Weight: Bending, points | 16 | |
| 12 |
| Thermal Diffusivity, mm2/s | 8.2 | |
| 9.6 |
| Thermal Shock Resistance, points | 16 | |
| 12 |
Alloy Composition
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| Chromium (Cr), % | 0 | |
| 0.3 to 0.7 |
| Copper (Cu), % | 61.7 to 67.8 | |
| 78.1 to 84.2 |
| Iron (Fe), % | 1.7 to 2.3 | |
| 0.5 to 1.0 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 to 0.050 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 to 1.0 |
| Nickel (Ni), % | 29 to 32 | |
| 15 to 18 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.5 | |
| 0 to 0.2 |