ASTM A387 Grade 91 Class 2 vs. EN 1.5507 Steel
Both ASTM A387 grade 91 class 2 and EN 1.5507 steel are iron alloys. They have 90% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 1.5507 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 140 to 260 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 450 to 880 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 410 |
| 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 | |
| 49 |
| 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 | |
| 2.0 |
| 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 | |
| 49 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 16 to 31 |
| Strength to Weight: Bending, points | 22 | |
| 17 to 26 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 13 |
| Thermal Shock Resistance, points | 19 | |
| 13 to 26 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0.020 to 0.080 |
| Boron (B), % | 0 | |
| 0.00080 to 0.0050 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.21 to 0.25 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 0.25 to 0.35 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 87.3 to 90.3 | |
| 97.8 to 98.7 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.8 to 1.0 |
| 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 0.015 |
| Silicon (Si), % | 0.2 to 0.5 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 to 0.060 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |