SAE-AISI O6 Steel vs. AWS ERNiCrMo-2
SAE-AISI O6 steel belongs to the iron alloys classification, while AWS ERNiCrMo-2 belongs to the nickel alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much.
For each property being compared, the top bar is SAE-AISI O6 steel and the bottom bar is AWS ERNiCrMo-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 210 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 71 | |
| 81 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 2070 | |
| 750 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 320 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1390 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 450 |
| Thermal Conductivity, W/m-K | 43 | |
| 11 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 55 |
| Density, g/cm3 | 7.7 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 9.2 |
| Embodied Energy, MJ/kg | 21 | |
| 120 |
| Embodied Water, L/kg | 47 | |
| 270 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 24 to 74 | |
| 25 |
| Strength to Weight: Bending, points | 22 to 47 | |
| 22 |
| Thermal Diffusivity, mm2/s | 12 | |
| 2.9 |
| Thermal Shock Resistance, points | 22 to 69 | |
| 20 |
Alloy Composition
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| Carbon (C), % | 1.3 to 1.6 | |
| 0.050 to 0.15 |
| Chromium (Cr), % | 0 to 0.3 | |
| 20.5 to 23 |
| Cobalt (Co), % | 0 | |
| 0.5 to 2.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.5 |
| Iron (Fe), % | 94.6 to 97.7 | |
| 17 to 20 |
| Manganese (Mn), % | 0.3 to 1.1 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 8.0 to 10 |
| Nickel (Ni), % | 0 to 0.3 | |
| 40.3 to 53.8 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.55 to 1.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 0 | |
| 0.2 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.5 |