EN 1.3555 Steel vs. SAE-AISI 4340 Steel
Both EN 1.3555 steel and SAE-AISI 4340 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is EN 1.3555 steel and the bottom bar is SAE-AISI 4340 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 | |
| 210 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 | |
| 690 to 1280 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 540 | |
| 430 |
| Melting Completion (Liquidus), °C | 1500 | |
| 1460 |
| Melting Onset (Solidus), °C | 1450 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 9.3 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 3.5 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.6 | |
| 1.7 |
| Embodied Energy, MJ/kg | 81 | |
| 22 |
| Embodied Water, L/kg | 90 | |
| 53 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 27 | |
| 24 to 45 |
| Strength to Weight: Bending, points | 23 | |
| 22 to 33 |
| Thermal Shock Resistance, points | 22 | |
| 20 to 38 |
Alloy Composition
| Carbon (C), % | 0.1 to 0.15 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 3.9 to 4.3 | |
| 0.7 to 0.9 |
| Copper (Cu), % | 0 to 0.1 | |
| 0 |
| Iron (Fe), % | 85.4 to 87.7 | |
| 95.1 to 96.3 |
| Manganese (Mn), % | 0.15 to 0.35 | |
| 0.6 to 0.8 |
| Molybdenum (Mo), % | 4.0 to 4.5 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 3.2 to 3.6 | |
| 1.7 to 2.0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.1 to 0.25 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.040 |
| Tungsten (W), % | 0 to 0.15 | |
| 0 |
| Vanadium (V), % | 1.0 to 1.3 | |
| 0 |