C72900 Copper-nickel vs. EN 1.7703 Steel
C72900 copper-nickel belongs to the copper alloys classification, while EN 1.7703 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 C72900 copper-nickel and the bottom bar is EN 1.7703 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Elongation at Break, % | 6.0 to 20 | |
| 20 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 45 | |
| 74 |
| Shear Strength, MPa | 540 to 630 | |
| 420 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1080 | |
| 670 to 690 |
| Tensile Strength: Yield (Proof), MPa | 700 to 920 | |
| 460 to 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 210 | |
| 460 |
| Melting Completion (Liquidus), °C | 1120 | |
| 1470 |
| Melting Onset (Solidus), °C | 950 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 470 |
| Thermal Conductivity, W/m-K | 29 | |
| 39 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 4.2 |
| Density, g/cm3 | 8.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 2.5 |
| Embodied Energy, MJ/kg | 72 | |
| 35 |
| Embodied Water, L/kg | 360 | |
| 61 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 49 to 210 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2030 to 3490 | |
| 570 to 650 |
| Stiffness to Weight: Axial, points | 7.6 | |
| 13 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 34 | |
| 24 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 22 |
| Thermal Diffusivity, mm2/s | 8.6 | |
| 11 |
| Thermal Shock Resistance, points | 31 to 38 | |
| 19 to 20 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 0.11 to 0.15 |
| Chromium (Cr), % | 0 | |
| 2.0 to 2.5 |
| Copper (Cu), % | 74.1 to 78 | |
| 0 to 0.2 |
| Iron (Fe), % | 0 to 0.5 | |
| 94.6 to 96.4 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 14.5 to 15.5 | |
| 0 to 0.25 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 to 0.070 |
| Nitrogen (N), % | 0 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 | |
| 0 to 0.0050 |
| Tin (Sn), % | 7.5 to 8.5 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.35 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |