EN 1.4421 Stainless Steel vs. EN 1.1191 Steel
Both EN 1.4421 stainless steel and EN 1.1191 steel are iron alloys. They have 79% of their average alloy composition in common. There are 30 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 1.4421 stainless steel and the bottom bar is EN 1.1191 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 16 to 17 |
| Fatigue Strength, MPa | 380 to 520 | |
| 210 to 290 |
| Impact Strength: V-Notched Charpy, J | 30 to 67 | |
| 16 to 29 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 880 to 1100 | |
| 630 to 700 |
| Tensile Strength: Yield (Proof), MPa | 620 to 950 | |
| 310 to 440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 400 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 16 | |
| 48 |
| Thermal Expansion, µm/m-K | 10 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 36 | |
| 19 |
| Embodied Water, L/kg | 130 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 140 | |
| 83 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 to 2270 | |
| 260 to 510 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 31 to 39 | |
| 22 to 25 |
| Strength to Weight: Bending, points | 26 to 30 | |
| 21 to 22 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 13 |
| Thermal Shock Resistance, points | 31 to 39 | |
| 20 to 22 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0.42 to 0.5 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 0 to 0.4 |
| Iron (Fe), % | 74.4 to 80.5 | |
| 97.3 to 99.08 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.5 to 0.8 |
| Molybdenum (Mo), % | 0 to 0.7 | |
| 0 to 0.1 |
| Nickel (Ni), % | 4.0 to 5.5 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.8 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.035 |