EN 1.4418 Stainless Steel vs. AISI 422 Stainless Steel
Both EN 1.4418 stainless steel and AISI 422 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is AISI 422 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 16 to 20 | |
| 15 to 17 |
| Fatigue Strength, MPa | 350 to 480 | |
| 410 to 500 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Shear Strength, MPa | 530 to 620 | |
| 560 to 660 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1000 | |
| 910 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 540 to 790 | |
| 670 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 650 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1480 |
| Melting Onset (Solidus), °C | 1400 | |
| 1470 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 24 |
| Thermal Expansion, µm/m-K | 10 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 4.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 5.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 3.1 |
| Embodied Energy, MJ/kg | 39 | |
| 44 |
| Embodied Water, L/kg | 130 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 20 | |
| 17 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 170 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 730 to 1590 | |
| 1140 to 1910 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 36 | |
| 32 to 38 |
| Strength to Weight: Bending, points | 26 to 28 | |
| 26 to 30 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 6.4 |
| Thermal Shock Resistance, points | 31 to 36 | |
| 33 to 39 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0.2 to 0.25 |
| Chromium (Cr), % | 15 to 17 | |
| 11 to 12.5 |
| Iron (Fe), % | 73.2 to 80.2 | |
| 81.9 to 85.8 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.5 to 1.0 |
| Molybdenum (Mo), % | 0.8 to 1.5 | |
| 0.9 to 1.3 |
| Nickel (Ni), % | 4.0 to 6.0 | |
| 0.5 to 1.0 |
| Nitrogen (N), % | 0 to 0.020 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.7 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.025 |
| Tungsten (W), % | 0 | |
| 0.9 to 1.3 |
| Vanadium (V), % | 0 | |
| 0.2 to 0.3 |