C71500 Copper-nickel vs. S31727 Stainless Steel
C71500 copper-nickel belongs to the copper alloys classification, while S31727 stainless steel belongs to the iron alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is C71500 copper-nickel and the bottom bar is S31727 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 200 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Rockwell B Hardness | 40 to 89 | |
| 83 |
| Shear Modulus, GPa | 52 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 620 | |
| 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 230 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1240 | |
| 1440 |
| Melting Onset (Solidus), °C | 1170 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 400 | |
| 470 |
| Thermal Expansion, µm/m-K | 16 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 41 | |
| 24 |
| Density, g/cm3 | 8.9 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 5.1 | |
| 4.7 |
| Embodied Energy, MJ/kg | 74 | |
| 64 |
| Embodied Water, L/kg | 280 | |
| 180 |
Common Calculations
| Stiffness to Weight: Axial, points | 8.6 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 12 to 19 | |
| 22 |
| Strength to Weight: Bending, points | 13 to 18 | |
| 20 |
| Thermal Shock Resistance, points | 12 to 20 | |
| 14 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 17.5 to 19 |
| Copper (Cu), % | 63.5 to 70.6 | |
| 2.8 to 4.0 |
| Iron (Fe), % | 0.4 to 1.0 | |
| 53.7 to 61.3 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 3.8 to 4.5 |
| Nickel (Ni), % | 29 to 33 | |
| 14.5 to 16.5 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.21 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Zinc (Zn), % | 0 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |