AWS ER70S-A1 vs. SAE-AISI 4140 Steel
Both AWS ER70S-A1 and SAE-AISI 4140 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is AWS ER70S-A1 and the bottom bar is SAE-AISI 4140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 22 | |
| 11 to 26 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 590 | |
| 690 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 450 | |
| 590 to 990 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| 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 | 50 | |
| 43 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.5 | |
| 2.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 20 | |
| 20 |
| Embodied Water, L/kg | 48 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 74 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 540 | |
| 920 to 2590 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 | |
| 25 to 38 |
| Strength to Weight: Bending, points | 20 | |
| 22 to 30 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 17 | |
| 20 to 32 |
Alloy Composition
| Carbon (C), % | 0 to 0.12 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.1 |
| Copper (Cu), % | 0 to 0.35 | |
| 0 |
| Iron (Fe), % | 96.1 to 99.3 | |
| 96.8 to 97.8 |
| Manganese (Mn), % | 0 to 1.3 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0.4 to 0.65 | |
| 0.15 to 0.25 |
| Nickel (Ni), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.3 to 0.7 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.040 |
| Residuals, % | 0 to 0.5 | |
| 0 |