EN 1.7231 Steel vs. S20910 Stainless Steel
Both EN 1.7231 steel and S20910 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 240 to 280 | |
| 230 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 12 | |
| 14 to 39 |
| Fatigue Strength, MPa | 360 to 500 | |
| 310 to 460 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 930 | |
| 780 to 940 |
| Tensile Strength: Yield (Proof), MPa | 570 to 800 | |
| 430 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 1080 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1420 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 46 | |
| 13 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.5 | |
| 22 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 4.8 |
| Embodied Energy, MJ/kg | 20 | |
| 68 |
| Embodied Water, L/kg | 51 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 100 | |
| 120 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 1700 | |
| 460 to 1640 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 12 | |
| 3.6 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 17 to 21 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.45 | |
| 0 to 0.060 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 20.5 to 23.5 |
| Iron (Fe), % | 96.4 to 98.1 | |
| 52.1 to 62.1 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 4.0 to 6.0 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 1.5 to 3.0 |
| Nickel (Ni), % | 0 | |
| 11.5 to 13.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.3 |