EN 1.5918 Steel vs. EN 1.6554 Steel
Both EN 1.5918 steel and EN 1.6554 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is EN 1.5918 steel and the bottom bar is EN 1.6554 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 190 | |
| 230 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 1390 | |
| 780 to 930 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 420 |
| 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 | 43 | |
| 40 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 3.4 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 1.7 |
| Embodied Energy, MJ/kg | 21 | |
| 22 |
| Embodied Water, L/kg | 56 | |
| 53 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 49 | |
| 27 to 33 |
| Strength to Weight: Bending, points | 18 to 35 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 12 | |
| 11 |
| Thermal Shock Resistance, points | 15 to 41 | |
| 23 to 27 |
Alloy Composition
| Carbon (C), % | 0.14 to 0.2 | |
| 0.23 to 0.28 |
| Chromium (Cr), % | 1.4 to 1.7 | |
| 0.7 to 0.9 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.3 |
| Iron (Fe), % | 94.9 to 96.6 | |
| 94.6 to 97.3 |
| Manganese (Mn), % | 0.5 to 0.9 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 1.4 to 1.7 | |
| 1.0 to 2.0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |
| Vanadium (V), % | 0 | |
| 0 to 0.030 |