EN 1.7711 Steel vs. ASTM A387 Grade 11 Steel
Both EN 1.7711 steel and ASTM A387 grade 11 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.7711 steel and the bottom bar is ASTM A387 grade 11 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 280 | |
| 150 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 16 to 22 | |
| 25 |
| Fatigue Strength, MPa | 290 to 520 | |
| 200 to 250 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 440 to 570 | |
| 320 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 930 | |
| 500 to 600 |
| Tensile Strength: Yield (Proof), MPa | 400 to 800 | |
| 270 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 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 | 33 | |
| 39 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.0 | |
| 2.9 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 1.6 |
| Embodied Energy, MJ/kg | 32 | |
| 21 |
| Embodied Water, L/kg | 54 | |
| 53 |
Common Calculations
| PREN (Pitting Resistance) | 2.9 | |
| 3.1 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 140 | |
| 100 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 430 to 1690 | |
| 200 to 320 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 24 to 33 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 22 to 27 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 8.9 | |
| 11 |
| Thermal Shock Resistance, points | 24 to 32 | |
| 15 to 18 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.015 | |
| 0 |
| Carbon (C), % | 0.36 to 0.44 | |
| 0.050 to 0.17 |
| Chromium (Cr), % | 0.9 to 1.2 | |
| 1.0 to 1.5 |
| Iron (Fe), % | 96 to 97.5 | |
| 96.2 to 97.6 |
| Manganese (Mn), % | 0.45 to 0.85 | |
| 0.4 to 0.65 |
| Molybdenum (Mo), % | 0.5 to 0.65 | |
| 0.45 to 0.65 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.4 | |
| 0.5 to 0.8 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |
| Vanadium (V), % | 0.25 to 0.35 | |
| 0 |