C72900 Copper-nickel vs. AISI 440C Stainless Steel
C72900 copper-nickel belongs to the copper alloys classification, while AISI 440C stainless steel belongs to the iron alloys. There are 28 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 AISI 440C stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 200 |
| Elongation at Break, % | 6.0 to 20 | |
| 2.0 to 14 |
| Poisson's Ratio | 0.34 | |
| 0.28 |
| Shear Modulus, GPa | 45 | |
| 76 |
| Shear Strength, MPa | 540 to 630 | |
| 430 to 1120 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1080 | |
| 710 to 1970 |
| Tensile Strength: Yield (Proof), MPa | 700 to 920 | |
| 450 to 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 210 | |
| 870 |
| Melting Completion (Liquidus), °C | 1120 | |
| 1480 |
| Melting Onset (Solidus), °C | 950 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 480 |
| Thermal Conductivity, W/m-K | 29 | |
| 22 |
| Thermal Expansion, µm/m-K | 17 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 9.0 |
| Density, g/cm3 | 8.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 2.2 |
| Embodied Energy, MJ/kg | 72 | |
| 31 |
| Embodied Water, L/kg | 360 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 49 to 210 | |
| 39 to 88 |
| Stiffness to Weight: Axial, points | 7.6 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 34 | |
| 26 to 71 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 23 to 46 |
| Thermal Diffusivity, mm2/s | 8.6 | |
| 6.0 |
| Thermal Shock Resistance, points | 31 to 38 | |
| 26 to 71 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Copper (Cu), % | 74.1 to 78 | |
| 0 |
| Iron (Fe), % | 0 to 0.5 | |
| 78 to 83.1 |
| Lead (Pb), % | 0 to 0.020 | |
| 0 |
| Magnesium (Mg), % | 0 to 0.15 | |
| 0 |
| Manganese (Mn), % | 0 to 0.3 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.75 |
| Nickel (Ni), % | 14.5 to 15.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.1 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Tin (Sn), % | 7.5 to 8.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |