EN 1.7703 Steel vs. SAE-AISI 1140 Steel
Both EN 1.7703 steel and SAE-AISI 1140 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 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 EN 1.7703 steel and the bottom bar is SAE-AISI 1140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 210 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 14 to 18 |
| Fatigue Strength, MPa | 320 to 340 | |
| 230 to 370 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 74 | |
| 72 |
| Shear Strength, MPa | 420 to 430 | |
| 370 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 690 | |
| 600 to 700 |
| Tensile Strength: Yield (Proof), MPa | 460 to 500 | |
| 340 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 460 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1430 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 39 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.2 | |
| 1.8 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.5 | |
| 1.4 |
| Embodied Energy, MJ/kg | 35 | |
| 18 |
| Embodied Water, L/kg | 61 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 89 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 to 650 | |
| 310 to 870 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 22 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 11 | |
| 14 |
| Thermal Shock Resistance, points | 19 to 20 | |
| 18 to 21 |
Alloy Composition
| Carbon (C), % | 0.11 to 0.15 | |
| 0.37 to 0.44 |
| Chromium (Cr), % | 2.0 to 2.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.2 | |
| 0 |
| Iron (Fe), % | 94.6 to 96.4 | |
| 98.4 to 98.9 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 to 0.25 | |
| 0 |
| Niobium (Nb), % | 0 to 0.070 | |
| 0 |
| Nitrogen (N), % | 0 to 0.012 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0.080 to 0.13 |
| Titanium (Ti), % | 0 to 0.030 | |
| 0 |
| Vanadium (V), % | 0.25 to 0.35 | |
| 0 |