S31730 Stainless Steel vs. C72900 Copper-nickel
S31730 stainless steel belongs to the iron alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is S31730 stainless steel and the bottom bar is C72900 copper-nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 120 |
| Elongation at Break, % | 40 | |
| 6.0 to 20 |
| Poisson's Ratio | 0.28 | |
| 0.34 |
| Shear Modulus, GPa | 77 | |
| 45 |
| Shear Strength, MPa | 370 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 870 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 200 | |
| 700 to 920 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 990 | |
| 210 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1120 |
| Melting Onset (Solidus), °C | 1390 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 380 |
| Thermal Expansion, µm/m-K | 16 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 39 |
| Density, g/cm3 | 8.0 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 4.6 |
| Embodied Energy, MJ/kg | 63 | |
| 72 |
| Embodied Water, L/kg | 180 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 170 | |
| 49 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 99 | |
| 2030 to 3490 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 24 | |
| 19 |
| Strength to Weight: Axial, points | 19 | |
| 27 to 34 |
| Strength to Weight: Bending, points | 18 | |
| 23 to 27 |
| Thermal Shock Resistance, points | 12 | |
| 31 to 38 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 |
| Chromium (Cr), % | 17 to 19 | |
| 0 |
| Copper (Cu), % | 4.0 to 5.0 | |
| 74.1 to 78 |
| Iron (Fe), % | 52.4 to 61 | |
| 0 to 0.5 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.15 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 0.3 |
| Molybdenum (Mo), % | 3.0 to 4.0 | |
| 0 |
| Nickel (Ni), % | 15 to 16.5 | |
| 14.5 to 15.5 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Nitrogen (N), % | 0 to 0.045 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Tin (Sn), % | 0 | |
| 7.5 to 8.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.3 |