EN 1.5918 Steel vs. EN 1.1172 Steel
Both EN 1.5918 steel and EN 1.1172 steel are iron alloys. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.5918 steel and the bottom bar is EN 1.1172 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 190 | |
| 140 to 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 1390 | |
| 480 to 1720 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 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 | 43 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 1.8 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 21 | |
| 18 |
| Embodied Water, L/kg | 56 | |
| 46 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 49 | |
| 17 to 61 |
| Strength to Weight: Bending, points | 18 to 35 | |
| 17 to 41 |
| Thermal Diffusivity, mm2/s | 12 | |
| 14 |
| Thermal Shock Resistance, points | 15 to 41 | |
| 15 to 55 |
Alloy Composition
| Carbon (C), % | 0.14 to 0.2 | |
| 0.32 to 0.39 |
| Chromium (Cr), % | 1.4 to 1.7 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 94.9 to 96.6 | |
| 98.2 to 99.18 |
| Manganese (Mn), % | 0.5 to 0.9 | |
| 0.5 to 0.8 |
| Nickel (Ni), % | 1.4 to 1.7 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |