SAE-AISI 1055 Steel vs. EN 1.1191 Steel
Both SAE-AISI 1055 steel and EN 1.1191 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1055 steel and the bottom bar is EN 1.1191 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 | |
| 180 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 14 | |
| 16 to 17 |
| Fatigue Strength, MPa | 260 to 390 | |
| 210 to 290 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Shear Strength, MPa | 440 to 450 | |
| 380 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 750 | |
| 630 to 700 |
| Tensile Strength: Yield (Proof), MPa | 400 to 630 | |
| 310 to 440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 48 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 | |
| 19 |
| Embodied Water, L/kg | 46 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 80 to 85 | |
| 83 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 440 to 1070 | |
| 260 to 510 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 22 to 25 |
| Strength to Weight: Bending, points | 23 | |
| 21 to 22 |
| Thermal Diffusivity, mm2/s | 14 | |
| 13 |
| Thermal Shock Resistance, points | 23 to 24 | |
| 20 to 22 |
Alloy Composition
| Carbon (C), % | 0.5 to 0.6 | |
| 0.42 to 0.5 |
| Chromium (Cr), % | 0 | |
| 0 to 0.4 |
| Iron (Fe), % | 98.4 to 98.9 | |
| 97.3 to 99.08 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.5 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.035 |