EN 1.4122 Stainless Steel vs. EN 1.1191 Steel
Both EN 1.4122 stainless steel and EN 1.1191 steel are iron alloys. They have 82% 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 1.4122 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, % | 14 | |
| 16 to 17 |
| Fatigue Strength, MPa | 260 to 360 | |
| 210 to 290 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 72 |
| Shear Strength, MPa | 480 to 520 | |
| 380 to 430 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 850 | |
| 630 to 700 |
| Tensile Strength: Yield (Proof), MPa | 450 to 630 | |
| 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 | 15 | |
| 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 | 9.5 | |
| 2.1 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 33 | |
| 19 |
| Embodied Water, L/kg | 120 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 93 to 110 | |
| 83 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 520 to 1000 | |
| 260 to 510 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 31 | |
| 22 to 25 |
| Strength to Weight: Bending, points | 25 to 26 | |
| 21 to 22 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 13 |
| Thermal Shock Resistance, points | 28 to 30 | |
| 20 to 22 |
Alloy Composition
| Carbon (C), % | 0.33 to 0.45 | |
| 0.42 to 0.5 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 0 to 0.4 |
| Iron (Fe), % | 77.2 to 83.4 | |
| 97.3 to 99.08 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.5 to 0.8 |
| Molybdenum (Mo), % | 0.8 to 1.3 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.035 |