Annealed SAE-AISI L6 vs. Annealed SAE-AISI O2
Both annealed SAE-AISI L6 and annealed SAE-AISI O2 are iron alloys. Both are furnished in the annealed condition. They have a very high 98% of their average alloy composition in common.
For each property being compared, the top bar is annealed SAE-AISI L6 and the bottom bar is annealed SAE-AISI O2.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 | |
| 22 |
| Fatigue Strength, MPa | 300 | |
| 260 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell B Hardness | 93 | |
| 93 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Shear Strength, MPa | 420 | |
| 410 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 640 |
| Tensile Strength: Yield (Proof), MPa | 440 | |
| 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1450 |
| Melting Onset (Solidus), °C | 1410 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 43 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.6 | |
| 2.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 1.8 |
| Embodied Energy, MJ/kg | 28 | |
| 26 |
| Embodied Water, L/kg | 54 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
| 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 23 |
| Strength to Weight: Bending, points | 22 | |
| 21 |
| Thermal Diffusivity, mm2/s | 11 | |
| 12 |
| Thermal Shock Resistance, points | 22 | |
| 22 |
Alloy Composition
| Carbon (C), % | 0.65 to 0.75 | |
| 0.85 to 1.0 |
| Chromium (Cr), % | 0.6 to 1.2 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 93.6 to 97.3 | |
| 95 to 97.8 |
| Manganese (Mn), % | 0.25 to 0.8 | |
| 1.4 to 1.8 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 to 0.3 |
| Nickel (Ni), % | 1.3 to 2.0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 0.3 | |
| 0 to 0.3 |