ASTM A387 Grade 91 Class 2 vs. EN 1.5520 Steel
Both ASTM A387 grade 91 class 2 and EN 1.5520 steel are iron alloys. They have 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is EN 1.5520 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 120 to 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 11 to 21 |
| Fatigue Strength, MPa | 330 | |
| 210 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Shear Strength, MPa | 420 | |
| 290 to 340 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 410 to 1410 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 300 to 480 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 400 |
| 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 | 26 | |
| 50 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 8.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 1.9 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 37 | |
| 19 |
| Embodied Water, L/kg | 88 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 42 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 | |
| 240 to 600 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 15 to 50 |
| Strength to Weight: Bending, points | 22 | |
| 16 to 36 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 13 |
| Thermal Shock Resistance, points | 19 | |
| 12 to 41 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0 |
| Boron (B), % | 0 | |
| 0.00080 to 0.0050 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.15 to 0.2 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 0 to 0.3 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 87.3 to 90.3 | |
| 97.7 to 98.9 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.9 to 1.2 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 |
| Niobium (Nb), % | 0.060 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.030 to 0.070 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.2 to 0.5 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.025 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |