AISI 440B Stainless Steel vs. EN 1.4404 Stainless Steel
Both AISI 440B stainless steel and EN 1.4404 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is EN 1.4404 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 3.0 to 18 | |
| 14 to 43 |
| Fatigue Strength, MPa | 260 to 850 | |
| 220 to 320 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 78 |
| Shear Strength, MPa | 460 to 1110 | |
| 420 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 1930 | |
| 600 to 900 |
| Tensile Strength: Yield (Proof), MPa | 430 to 1860 | |
| 240 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 950 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1440 |
| Melting Onset (Solidus), °C | 1370 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 23 | |
| 15 |
| Thermal Expansion, µm/m-K | 10 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 19 |
| Density, g/cm3 | 7.7 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 3.8 |
| Embodied Energy, MJ/kg | 31 | |
| 52 |
| Embodied Water, L/kg | 120 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 26 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 to 110 | |
| 110 to 210 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 70 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 24 to 45 | |
| 20 to 26 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 4.0 |
| Thermal Shock Resistance, points | 27 to 70 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0.75 to 1.0 | |
| 0 to 0.030 |
| Chromium (Cr), % | 16 to 18 | |
| 16.5 to 18.5 |
| Iron (Fe), % | 78.2 to 83.3 | |
| 62.8 to 71.5 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 2.0 to 2.5 |
| Nickel (Ni), % | 0 | |
| 10 to 13 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |