EN 1.1191 Steel vs. EN 1.4031 Stainless Steel
Both EN 1.1191 steel and EN 1.4031 stainless steel are iron alloys. They have 86% 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 1.1191 steel and the bottom bar is EN 1.4031 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 16 to 17 | |
| 11 to 13 |
| Fatigue Strength, MPa | 210 to 290 | |
| 220 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 76 |
| Shear Strength, MPa | 380 to 430 | |
| 400 to 540 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 700 | |
| 670 to 900 |
| Tensile Strength: Yield (Proof), MPa | 310 to 440 | |
| 390 to 730 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 770 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 48 | |
| 30 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 3.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 3.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 7.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.9 |
| Embodied Energy, MJ/kg | 19 | |
| 27 |
| Embodied Water, L/kg | 47 | |
| 100 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 100 | |
| 77 to 94 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 510 | |
| 380 to 1360 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 22 to 25 | |
| 24 to 32 |
| Strength to Weight: Bending, points | 21 to 22 | |
| 22 to 27 |
| Thermal Diffusivity, mm2/s | 13 | |
| 8.1 |
| Thermal Shock Resistance, points | 20 to 22 | |
| 23 to 32 |
Alloy Composition
| Carbon (C), % | 0.42 to 0.5 | |
| 0.36 to 0.42 |
| Chromium (Cr), % | 0 to 0.4 | |
| 12.5 to 14.5 |
| Iron (Fe), % | 97.3 to 99.08 | |
| 83 to 87.1 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 0 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.015 |