SAE-AISI 8740 Steel vs. EN 1.7711 Steel
Both SAE-AISI 8740 steel and EN 1.7711 steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 8740 steel and the bottom bar is EN 1.7711 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 200 | |
| 210 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 23 | |
| 16 to 22 |
| Fatigue Strength, MPa | 270 to 350 | |
| 290 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 370 to 400 | |
| 440 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 670 | |
| 690 to 930 |
| Tensile Strength: Yield (Proof), MPa | 380 to 570 | |
| 400 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 430 |
| 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 | 39 | |
| 33 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 3.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.3 |
| Embodied Energy, MJ/kg | 20 | |
| 32 |
| Embodied Water, L/kg | 50 | |
| 54 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 130 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 390 to 850 | |
| 430 to 1690 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 to 24 | |
| 24 to 33 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 22 to 27 |
| Thermal Diffusivity, mm2/s | 10 | |
| 8.9 |
| Thermal Shock Resistance, points | 17 to 20 | |
| 24 to 32 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0.38 to 0.43 | |
| 0.36 to 0.44 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0.9 to 1.2 |
| Iron (Fe), % | 96.5 to 97.7 | |
| 96 to 97.5 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 0.45 to 0.85 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0.5 to 0.65 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.35 |