EN 1.3551 Steel vs. AISI 440B Stainless Steel
Both EN 1.3551 steel and AISI 440B stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is AISI 440B stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 720 | |
| 740 to 1930 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 530 | |
| 870 |
| Melting Completion (Liquidus), °C | 1490 | |
| 1480 |
| Melting Onset (Solidus), °C | 1450 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 480 |
| Thermal Conductivity, W/m-K | 36 | |
| 23 |
| Thermal Expansion, µm/m-K | 13 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.6 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.9 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 9.0 |
| Density, g/cm3 | 7.9 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 4.9 | |
| 2.2 |
| Embodied Energy, MJ/kg | 71 | |
| 31 |
| Embodied Water, L/kg | 82 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 18 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 26 | |
| 27 to 70 |
| Strength to Weight: Bending, points | 23 | |
| 24 to 45 |
| Thermal Diffusivity, mm2/s | 9.8 | |
| 6.1 |
| Thermal Shock Resistance, points | 21 | |
| 27 to 70 |
Alloy Composition
| Carbon (C), % | 0.77 to 0.85 | |
| 0.75 to 1.0 |
| Chromium (Cr), % | 3.9 to 4.3 | |
| 16 to 18 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Iron (Fe), % | 88.8 to 91.1 | |
| 78.2 to 83.3 |
| Manganese (Mn), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 4.0 to 4.5 | |
| 0 to 0.75 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Tungsten (W), % | 0 to 0.25 | |
| 0 |
| Vanadium (V), % | 0.9 to 1.1 | |
| 0 |