Nickel 690 vs. C71640 Copper-nickel
Nickel 690 belongs to the nickel alloys classification, while C71640 copper-nickel belongs to the copper alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is nickel 690 and the bottom bar is C71640 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 140 |
| Poisson's Ratio | 0.28 | |
| 0.33 |
| Shear Modulus, GPa | 79 | |
| 52 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 990 | |
| 490 to 630 |
| Tensile Strength: Yield (Proof), MPa | 250 to 760 | |
| 190 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 260 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1180 |
| Melting Onset (Solidus), °C | 1340 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 410 |
| Thermal Conductivity, W/m-K | 14 | |
| 29 |
| Thermal Expansion, µm/m-K | 14 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.5 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.6 | |
| 7.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 40 |
| Density, g/cm3 | 8.3 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 5.0 |
| Embodied Energy, MJ/kg | 120 | |
| 73 |
| Embodied Water, L/kg | 290 | |
| 280 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 1440 | |
| 130 to 750 |
| Stiffness to Weight: Axial, points | 13 | |
| 8.7 |
| Stiffness to Weight: Bending, points | 24 | |
| 20 |
| Strength to Weight: Axial, points | 21 to 33 | |
| 15 to 20 |
| Strength to Weight: Bending, points | 20 to 27 | |
| 16 to 18 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 8.2 |
| Thermal Shock Resistance, points | 16 to 25 | |
| 16 to 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 27 to 31 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 61.7 to 67.8 |
| Iron (Fe), % | 7.0 to 11 | |
| 1.7 to 2.3 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 0.5 | |
| 1.5 to 2.5 |
| Nickel (Ni), % | 58 to 66 | |
| 29 to 32 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |