EN 1.1152 Steel vs. SAE-AISI 1140 Steel
Both EN 1.1152 steel and SAE-AISI 1140 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.1152 steel and the bottom bar is SAE-AISI 1140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 120 to 160 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 22 | |
| 14 to 18 |
| Fatigue Strength, MPa | 190 to 300 | |
| 230 to 370 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 63 to 73 | |
| 39 to 46 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 290 to 340 | |
| 370 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 400 to 550 | |
| 600 to 700 |
| Tensile Strength: Yield (Proof), MPa | 270 to 440 | |
| 340 to 570 |
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 | 52 | |
| 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 | |
| 18 |
| Embodied Water, L/kg | 46 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 41 to 110 | |
| 89 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 200 to 530 | |
| 310 to 870 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 14 to 19 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 15 to 19 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 13 to 17 | |
| 18 to 21 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.22 | |
| 0.37 to 0.44 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98.6 to 99.52 | |
| 98.4 to 98.9 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.7 to 1.0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0.080 to 0.13 |