SAE-AISI O7 Steel vs. N08221 Nickel
SAE-AISI O7 steel belongs to the iron alloys classification, while N08221 nickel belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI O7 steel and the bottom bar is N08221 nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 680 to 2110 | |
| 610 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1440 |
| Melting Onset (Solidus), °C | 1430 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.0 | |
| 44 |
| Density, g/cm3 | 7.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 7.9 |
| Embodied Energy, MJ/kg | 33 | |
| 110 |
| Embodied Water, L/kg | 52 | |
| 240 |
Common Calculations
| PREN (Pitting Resistance) | 3.6 | |
| 40 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 24 to 74 | |
| 21 |
| Strength to Weight: Bending, points | 22 to 46 | |
| 19 |
| Thermal Shock Resistance, points | 23 to 70 | |
| 16 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.2 |
| Carbon (C), % | 1.1 to 1.3 | |
| 0 to 0.025 |
| Chromium (Cr), % | 0.35 to 0.85 | |
| 20 to 22 |
| Copper (Cu), % | 0 to 0.25 | |
| 1.5 to 3.0 |
| Iron (Fe), % | 92.9 to 97.6 | |
| 22 to 33.9 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.3 | |
| 5.0 to 6.5 |
| Nickel (Ni), % | 0 to 0.3 | |
| 39 to 46 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.050 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0.6 to 1.0 |
| Tungsten (W), % | 1.0 to 2.0 | |
| 0 |
| Vanadium (V), % | 0 to 0.4 | |
| 0 |