ASTM A387 Grade 21 Steel vs. EN 1.5418 Steel
Both ASTM A387 grade 21 steel and EN 1.5418 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 24 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 21 steel and the bottom bar is EN 1.5418 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 74 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 590 | |
| 490 to 1780 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 480 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1430 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 41 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 8.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.1 | |
| 2.1 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.5 |
| Embodied Energy, MJ/kg | 23 | |
| 19 |
| Embodied Water, L/kg | 62 | |
| 47 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 17 to 63 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 18 to 42 |
| Thermal Diffusivity, mm2/s | 11 | |
| 13 |
| Thermal Shock Resistance, points | 14 to 17 | |
| 14 to 53 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0.35 to 0.4 |
| Chromium (Cr), % | 2.8 to 3.3 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 94.4 to 96 | |
| 97.8 to 98.9 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0.2 to 0.3 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |