SAE-AISI 1140 Steel vs. EN 1.1151 Steel
Both SAE-AISI 1140 steel and EN 1.1151 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 (1, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1140 steel and the bottom bar is EN 1.1151 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 180 | |
| 130 to 150 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 to 18 | |
| 21 to 26 |
| Fatigue Strength, MPa | 230 to 370 | |
| 180 to 240 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Shear Strength, MPa | 370 to 420 | |
| 300 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 700 | |
| 460 to 520 |
| Tensile Strength: Yield (Proof), MPa | 340 to 570 | |
| 240 to 340 |
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 | |
| 50 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 8.2 |
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 | 89 to 93 | |
| 98 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 310 to 870 | |
| 160 to 310 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 25 | |
| 16 to 18 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 17 to 18 |
| Thermal Diffusivity, mm2/s | 14 | |
| 13 |
| Thermal Shock Resistance, points | 18 to 21 | |
| 15 to 16 |
Alloy Composition
| Carbon (C), % | 0.37 to 0.44 | |
| 0.17 to 0.24 |
| Chromium (Cr), % | 0 | |
| 0 to 0.4 |
| Iron (Fe), % | 98.4 to 98.9 | |
| 97.7 to 99.43 |
| Manganese (Mn), % | 0.7 to 1.0 | |
| 0.4 to 0.7 |
| 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), % | 0.080 to 0.13 | |
| 0 to 0.035 |