C70400 Copper-nickel vs. AISI 431 Stainless Steel
C70400 copper-nickel belongs to the copper alloys classification, while AISI 431 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is C70400 copper-nickel and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 200 |
| Poisson's Ratio | 0.34 | |
| 0.28 |
| Shear Modulus, GPa | 45 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 300 to 310 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 95 to 230 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 210 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 210 | |
| 850 |
| Melting Completion (Liquidus), °C | 1120 | |
| 1510 |
| Melting Onset (Solidus), °C | 1060 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 480 |
| Thermal Conductivity, W/m-K | 64 | |
| 26 |
| Thermal Expansion, µm/m-K | 17 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 14 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 14 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 32 | |
| 9.0 |
| Density, g/cm3 | 8.9 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 2.2 |
| Embodied Energy, MJ/kg | 47 | |
| 31 |
| Embodied Water, L/kg | 300 | |
| 120 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 38 to 220 | |
| 1270 to 2770 |
| Stiffness to Weight: Axial, points | 7.5 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 25 |
| Strength to Weight: Axial, points | 9.3 to 9.8 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 11 to 12 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 18 | |
| 7.0 |
| Thermal Shock Resistance, points | 10 to 11 | |
| 28 to 43 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.2 |
| Chromium (Cr), % | 0 | |
| 15 to 17 |
| Copper (Cu), % | 89.8 to 93.6 | |
| 0 |
| Iron (Fe), % | 1.3 to 1.7 | |
| 78.2 to 83.8 |
| Lead (Pb), % | 0 to 0.050 | |
| 0 |
| Manganese (Mn), % | 0.3 to 0.8 | |
| 0 to 1.0 |
| Nickel (Ni), % | 4.8 to 6.2 | |
| 1.3 to 2.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| 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 |