ASTM A387 Grade 91 Class 2 vs. EN 1.7383 Steel
Both ASTM A387 grade 91 class 2 and EN 1.7383 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, 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 1.7383 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 20 to 23 |
| Fatigue Strength, MPa | 330 | |
| 210 to 270 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 74 |
| Shear Strength, MPa | 420 | |
| 350 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 560 to 610 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 300 to 400 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 460 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1420 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 26 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 7.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 8.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 3.9 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.8 |
| Embodied Energy, MJ/kg | 37 | |
| 23 |
| Embodied Water, L/kg | 88 | |
| 59 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 5.6 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 | |
| 240 to 420 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 20 to 22 |
| Strength to Weight: Bending, points | 22 | |
| 19 to 20 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 11 |
| Thermal Shock Resistance, points | 19 | |
| 16 to 18 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0 to 0.040 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 2.0 to 2.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 87.3 to 90.3 | |
| 94.3 to 96.6 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.4 to 0.8 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 to 0.3 |
| 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 0.5 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |