Annealed SAE-AISI O6 vs. Annealed SAE-AISI S2
Both annealed SAE-AISI O6 and annealed SAE-AISI S2 are iron alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is annealed SAE-AISI O6 and the bottom bar is annealed SAE-AISI S2.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 20 | |
| 23 |
| Fatigue Strength, MPa | 280 | |
| 290 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell B Hardness | 93 | |
| 95 |
| Shear Modulus, GPa | 71 | |
| 72 |
| Shear Strength, MPa | 420 | |
| 420 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 670 |
| Tensile Strength: Yield (Proof), MPa | 410 | |
| 400 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 260 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1450 |
| Melting Onset (Solidus), °C | 1390 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 43 | |
| 44 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 2.6 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.1 |
| Embodied Energy, MJ/kg | 21 | |
| 30 |
| Embodied Water, L/kg | 47 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 | |
| 440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 24 |
| Strength to Weight: Bending, points | 22 | |
| 22 |
| Thermal Diffusivity, mm2/s | 12 | |
| 12 |
| Thermal Shock Resistance, points | 22 | |
| 23 |
Alloy Composition
| Carbon (C), % | 1.3 to 1.6 | |
| 0.4 to 0.55 |
| Chromium (Cr), % | 0 to 0.3 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 94.6 to 97.7 | |
| 96 to 98.1 |
| Manganese (Mn), % | 0.3 to 1.1 | |
| 0.3 to 0.5 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.55 to 1.5 | |
| 0.9 to 1.2 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0 to 0.5 |