ASTM A372 Grade H Steel vs. EN 1.6771 Steel
Both ASTM A372 grade H steel and EN 1.6771 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 30 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 ASTM A372 grade H steel and the bottom bar is EN 1.6771 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 280 | |
| 280 to 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 22 | |
| 8.0 to 8.7 |
| Fatigue Strength, MPa | 310 to 380 | |
| 440 to 680 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 910 | |
| 930 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 430 to 550 | |
| 740 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 440 |
| 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 | 45 | |
| 46 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 8.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 9.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 5.0 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.9 |
| Embodied Energy, MJ/kg | 20 | |
| 25 |
| Embodied Water, L/kg | 49 | |
| 58 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 160 | |
| 75 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 500 to 810 | |
| 1460 to 3450 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 32 | |
| 33 to 41 |
| Strength to Weight: Bending, points | 21 to 27 | |
| 27 to 31 |
| Thermal Diffusivity, mm2/s | 12 | |
| 13 |
| Thermal Shock Resistance, points | 19 to 27 | |
| 27 to 35 |
Alloy Composition
| Carbon (C), % | 0.3 to 0.4 | |
| 0.27 to 0.33 |
| Chromium (Cr), % | 0.4 to 0.65 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 97.3 to 98.3 | |
| 92.2 to 95 |
| Manganese (Mn), % | 0.75 to 1.1 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 0 | |
| 3.0 to 4.0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.020 |