C71640 Copper-nickel vs. Type 4 Magnetic Alloy
C71640 copper-nickel belongs to the copper alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 190 |
| Poisson's Ratio | 0.33 | |
| 0.31 |
| Shear Modulus, GPa | 52 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 490 to 630 | |
| 620 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 190 to 460 | |
| 270 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 900 |
| Melting Completion (Liquidus), °C | 1180 | |
| 1420 |
| Melting Onset (Solidus), °C | 1120 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 440 |
| Thermal Expansion, µm/m-K | 15 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.1 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 40 | |
| 60 |
| Density, g/cm3 | 8.9 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 5.0 | |
| 10 |
| Embodied Energy, MJ/kg | 73 | |
| 140 |
| Embodied Water, L/kg | 280 | |
| 210 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 750 | |
| 190 to 2840 |
| Stiffness to Weight: Axial, points | 8.7 | |
| 12 |
| Stiffness to Weight: Bending, points | 20 | |
| 22 |
| Strength to Weight: Axial, points | 15 to 20 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 16 to 18 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 16 to 21 | |
| 21 to 37 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 61.7 to 67.8 | |
| 0 to 0.3 |
| Iron (Fe), % | 1.7 to 2.3 | |
| 9.5 to 17.5 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 29 to 32 | |
| 79 to 82 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |