EN 1.1147 Steel vs. SAE-AISI 1040 Steel
Both EN 1.1147 steel and SAE-AISI 1040 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.1147 steel and the bottom bar is SAE-AISI 1040 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 to 140 | |
| 160 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 17 | |
| 13 to 20 |
| Fatigue Strength, MPa | 180 to 250 | |
| 220 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 63 to 73 | |
| 40 to 45 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 280 | |
| 350 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 390 to 470 | |
| 570 to 640 |
| Tensile Strength: Yield (Proof), MPa | 280 to 370 | |
| 320 to 530 |
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 | |
| 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 8.0 |
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 | 40 to 73 | |
| 79 to 96 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 to 370 | |
| 270 to 760 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 14 to 17 | |
| 20 to 23 |
| Strength to Weight: Bending, points | 15 to 17 | |
| 19 to 21 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 12 to 15 | |
| 18 to 20 |
Alloy Composition
| Carbon (C), % | 0.15 to 0.19 | |
| 0.37 to 0.44 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98.3 to 99.25 | |
| 98.6 to 99.03 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.050 |