CC381H Copper-nickel vs. S31266 Stainless Steel
CC381H copper-nickel belongs to the copper alloys classification, while S31266 stainless steel belongs to the iron alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 CC381H copper-nickel and the bottom bar is S31266 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 210 |
| Elongation at Break, % | 20 | |
| 40 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Shear Modulus, GPa | 52 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 380 | |
| 860 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 470 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 260 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1180 | |
| 1470 |
| Melting Onset (Solidus), °C | 1120 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 460 |
| Thermal Conductivity, W/m-K | 30 | |
| 12 |
| Thermal Expansion, µm/m-K | 16 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.8 | |
| 1.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 6.9 | |
| 2.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 40 | |
| 37 |
| Density, g/cm3 | 8.9 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 5.0 | |
| 6.5 |
| Embodied Energy, MJ/kg | 73 | |
| 89 |
| Embodied Water, L/kg | 280 | |
| 220 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 60 | |
| 290 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 68 | |
| 540 |
| Stiffness to Weight: Axial, points | 8.6 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 24 |
| Strength to Weight: Axial, points | 12 | |
| 29 |
| Strength to Weight: Bending, points | 13 | |
| 24 |
| Thermal Diffusivity, mm2/s | 8.4 | |
| 3.1 |
| Thermal Shock Resistance, points | 13 | |
| 18 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.010 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 23 to 25 |
| Copper (Cu), % | 64.5 to 69.9 | |
| 1.0 to 2.5 |
| Iron (Fe), % | 0.5 to 1.5 | |
| 34.1 to 46 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Manganese (Mn), % | 0.6 to 1.2 | |
| 2.0 to 4.0 |
| Molybdenum (Mo), % | 0 | |
| 5.2 to 6.2 |
| Nickel (Ni), % | 29 to 31 | |
| 21 to 24 |
| Nitrogen (N), % | 0 | |
| 0.35 to 0.6 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.020 |
| Tungsten (W), % | 0 | |
| 1.5 to 2.5 |
| Zinc (Zn), % | 0 to 0.5 | |
| 0 |