AWS E240 vs. SAE-AISI 5140 Steel
Both AWS E240 and SAE-AISI 5140 steel are iron alloys. They have 65% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is AWS E240 and the bottom bar is SAE-AISI 5140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 17 | |
| 12 to 29 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 | |
| 560 to 970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 45 |
| Thermal Expansion, µm/m-K | 15 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 14 | |
| 2.1 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 1.4 |
| Embodied Energy, MJ/kg | 42 | |
| 19 |
| Embodied Water, L/kg | 160 | |
| 49 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 | |
| 20 to 34 |
| Strength to Weight: Bending, points | 24 | |
| 19 to 28 |
| Thermal Diffusivity, mm2/s | 3.9 | |
| 12 |
| Thermal Shock Resistance, points | 19 | |
| 16 to 29 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 17 to 19 | |
| 0.7 to 0.9 |
| Copper (Cu), % | 0 to 0.75 | |
| 0 |
| Iron (Fe), % | 58.6 to 68.4 | |
| 97.3 to 98.1 |
| Manganese (Mn), % | 10.5 to 13.5 | |
| 0.7 to 0.9 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Nickel (Ni), % | 4.0 to 6.0 | |
| 0 |
| Nitrogen (N), % | 0.1 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.040 |