EN 1.4424 Stainless Steel vs. EN 1.4401 Stainless Steel
Both EN 1.4424 stainless steel and EN 1.4401 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4424 stainless steel and the bottom bar is EN 1.4401 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 | |
| 190 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 28 | |
| 14 to 40 |
| Fatigue Strength, MPa | 350 to 370 | |
| 200 to 320 |
| Impact Strength: V-Notched Charpy, J | 90 to 91 | |
| 91 to 94 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 78 |
| Shear Strength, MPa | 520 | |
| 410 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 800 | |
| 600 to 900 |
| Tensile Strength: Yield (Proof), MPa | 480 to 500 | |
| 230 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 420 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 960 | |
| 950 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1440 |
| Melting Onset (Solidus), °C | 1390 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 19 |
| Density, g/cm3 | 7.7 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 3.8 |
| Embodied Energy, MJ/kg | 46 | |
| 52 |
| Embodied Water, L/kg | 140 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 29 | |
| 26 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 200 | |
| 110 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 to 640 | |
| 130 to 800 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 29 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 25 | |
| 20 to 26 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 4.0 |
| Thermal Shock Resistance, points | 23 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.070 |
| Chromium (Cr), % | 18 to 19 | |
| 16.5 to 18.5 |
| Iron (Fe), % | 68.6 to 72.4 | |
| 62.8 to 71.5 |
| Manganese (Mn), % | 1.2 to 2.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 2.0 to 2.5 |
| Nickel (Ni), % | 4.5 to 5.2 | |
| 10 to 13 |
| Nitrogen (N), % | 0.050 to 0.1 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 1.4 to 2.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |