SAE-AISI 1137 Steel vs. EN 1.7231 Steel
Both SAE-AISI 1137 steel and EN 1.7231 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1137 steel and the bottom bar is EN 1.7231 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 210 | |
| 240 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 11 to 12 |
| Fatigue Strength, MPa | 250 to 400 | |
| 360 to 500 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 760 | |
| 790 to 930 |
| Tensile Strength: Yield (Proof), MPa | 370 to 650 | |
| 570 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 420 |
| 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 | |
| 46 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 10 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 2.5 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 20 |
| Embodied Water, L/kg | 48 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 to 100 | |
| 87 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 1130 | |
| 870 to 1700 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 25 to 27 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 21 to 23 | |
| 23 to 27 |
Alloy Composition
| Carbon (C), % | 0.32 to 0.39 | |
| 0.38 to 0.45 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 97.8 to 98.3 | |
| 96.4 to 98.1 |
| Manganese (Mn), % | 1.4 to 1.7 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.15 to 0.3 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0.080 to 0.13 | |
| 0 to 0.030 |