C72700 Copper-nickel vs. EN 1.4640 Stainless Steel
C72700 copper-nickel belongs to the copper alloys classification, while EN 1.4640 stainless steel belongs to the iron alloys. There are 29 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 C72700 copper-nickel and the bottom bar is EN 1.4640 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 200 |
| Elongation at Break, % | 4.0 to 36 | |
| 51 |
| Poisson's Ratio | 0.34 | |
| 0.28 |
| Shear Modulus, GPa | 44 | |
| 77 |
| Shear Strength, MPa | 310 to 620 | |
| 440 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1070 | |
| 620 to 650 |
| Tensile Strength: Yield (Proof), MPa | 580 to 1060 | |
| 240 to 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 930 |
| Melting Completion (Liquidus), °C | 1100 | |
| 1420 |
| Melting Onset (Solidus), °C | 930 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 480 |
| Thermal Conductivity, W/m-K | 54 | |
| 15 |
| Thermal Expansion, µm/m-K | 17 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 14 |
| Density, g/cm3 | 8.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.0 | |
| 2.8 |
| Embodied Energy, MJ/kg | 62 | |
| 40 |
| Embodied Water, L/kg | 350 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 20 to 380 | |
| 250 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1420 to 4770 | |
| 150 to 170 |
| Stiffness to Weight: Axial, points | 7.4 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 25 |
| Strength to Weight: Axial, points | 14 to 34 | |
| 22 to 23 |
| Strength to Weight: Bending, points | 15 to 26 | |
| 21 |
| Thermal Diffusivity, mm2/s | 16 | |
| 4.0 |
| Thermal Shock Resistance, points | 16 to 38 | |
| 14 to 15 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0.030 to 0.080 |
| Chromium (Cr), % | 0 | |
| 18 to 19 |
| Copper (Cu), % | 82.1 to 86 | |
| 1.3 to 2.0 |
| Iron (Fe), % | 0 to 0.5 | |
| 67.4 to 73.6 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0.050 to 0.3 | |
| 1.5 to 4.0 |
| Nickel (Ni), % | 8.5 to 9.5 | |
| 5.5 to 6.9 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0.030 to 0.11 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Tin (Sn), % | 5.5 to 6.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |