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