C71640 Copper-nickel vs. EN 1.4938 Stainless Steel
C71640 copper-nickel belongs to the copper alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is EN 1.4938 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 200 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Shear Modulus, GPa | 52 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 490 to 630 | |
| 870 to 1030 |
| Tensile Strength: Yield (Proof), MPa | 190 to 460 | |
| 640 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 750 |
| Melting Completion (Liquidus), °C | 1180 | |
| 1460 |
| Melting Onset (Solidus), °C | 1120 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 470 |
| Thermal Conductivity, W/m-K | 29 | |
| 30 |
| 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 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 40 | |
| 10 |
| Density, g/cm3 | 8.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.0 | |
| 3.3 |
| Embodied Energy, MJ/kg | 73 | |
| 47 |
| Embodied Water, L/kg | 280 | |
| 110 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 750 | |
| 1050 to 1920 |
| Stiffness to Weight: Axial, points | 8.7 | |
| 14 |
| Stiffness to Weight: Bending, points | 20 | |
| 25 |
| Strength to Weight: Axial, points | 15 to 20 | |
| 31 to 37 |
| Strength to Weight: Bending, points | 16 to 18 | |
| 26 to 29 |
| Thermal Diffusivity, mm2/s | 8.2 | |
| 8.1 |
| Thermal Shock Resistance, points | 16 to 21 | |
| 30 to 35 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 0 | |
| 11 to 12.5 |
| Copper (Cu), % | 61.7 to 67.8 | |
| 0 |
| Iron (Fe), % | 1.7 to 2.3 | |
| 80.5 to 84.8 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0.4 to 0.9 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 2.0 |
| Nickel (Ni), % | 29 to 32 | |
| 2.0 to 3.0 |
| Nitrogen (N), % | 0 | |
| 0.020 to 0.040 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.4 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |