AISI 309 Stainless Steel vs. C72900 Copper-nickel
AISI 309 stainless steel belongs to the iron alloys classification, while C72900 copper-nickel belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AISI 309 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, % | 34 to 47 | |
| 6.0 to 20 |
| Poisson's Ratio | 0.27 | |
| 0.34 |
| Shear Modulus, GPa | 78 | |
| 45 |
| Shear Strength, MPa | 420 to 470 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 710 | |
| 870 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 260 to 350 | |
| 700 to 920 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 210 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 210 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1120 |
| Melting Onset (Solidus), °C | 1400 | |
| 950 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 380 |
| Thermal Conductivity, W/m-K | 16 | |
| 29 |
| Thermal Expansion, µm/m-K | 15 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 7.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 8.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 39 |
| Density, g/cm3 | 7.8 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 4.6 |
| Embodied Energy, MJ/kg | 51 | |
| 72 |
| Embodied Water, L/kg | 170 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 230 | |
| 49 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 to 310 | |
| 2030 to 3490 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.6 |
| Stiffness to Weight: Bending, points | 25 | |
| 19 |
| Strength to Weight: Axial, points | 21 to 25 | |
| 27 to 34 |
| Strength to Weight: Bending, points | 20 to 23 | |
| 23 to 27 |
| Thermal Diffusivity, mm2/s | 4.3 | |
| 8.6 |
| Thermal Shock Resistance, points | 14 to 16 | |
| 31 to 38 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 |
| Chromium (Cr), % | 22 to 24 | |
| 0 |
| Copper (Cu), % | 0 | |
| 74.1 to 78 |
| Iron (Fe), % | 58 to 66 | |
| 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 |
| Nickel (Ni), % | 12 to 15 | |
| 14.5 to 15.5 |
| Niobium (Nb), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 7.5 to 8.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.5 |
| Residuals, % | 0 | |
| 0 to 0.3 |