EN 1.5414 Steel vs. EN 1.8818 Steel
Both EN 1.5414 steel and EN 1.8818 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.5414 steel and the bottom bar is EN 1.8818 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 180 | |
| 130 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 22 | |
| 27 |
| Fatigue Strength, MPa | 250 to 270 | |
| 200 |
| Impact Strength: V-Notched Charpy, J | 46 | |
| 48 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 350 to 370 | |
| 280 |
| Tensile Strength: Ultimate (UTS), MPa | 550 to 580 | |
| 440 |
| Tensile Strength: Yield (Proof), MPa | 350 to 380 | |
| 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 44 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 2.4 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 1.6 |
| Embodied Energy, MJ/kg | 21 | |
| 21 |
| Embodied Water, L/kg | 50 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 320 to 370 | |
| 200 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 20 | |
| 16 |
| Strength to Weight: Bending, points | 19 to 20 | |
| 16 |
| Thermal Diffusivity, mm2/s | 12 | |
| 13 |
| Thermal Shock Resistance, points | 16 to 17 | |
| 13 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.015 to 0.034 |
| Carbon (C), % | 0 to 0.2 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 to 0.3 | |
| 0 to 0.35 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.6 |
| Iron (Fe), % | 96.4 to 98.7 | |
| 95.9 to 99.985 |
| Manganese (Mn), % | 0.9 to 1.5 | |
| 0 to 1.6 |
| Molybdenum (Mo), % | 0.45 to 0.6 | |
| 0 to 0.13 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 to 0.35 |
| Niobium (Nb), % | 0 | |
| 0 to 0.060 |
| Nitrogen (N), % | 0 to 0.012 | |
| 0 to 0.017 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.55 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0 to 0.060 |
| Vanadium (V), % | 0 | |
| 0 to 0.1 |