S31727 Stainless Steel vs. EN 1.7231 Steel
Both S31727 stainless steel and EN 1.7231 steel are iron alloys. They have 60% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is S31727 stainless steel and the bottom bar is EN 1.7231 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 | |
| 240 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 40 | |
| 11 to 12 |
| Fatigue Strength, MPa | 240 | |
| 360 to 500 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 630 | |
| 790 to 930 |
| Tensile Strength: Yield (Proof), MPa | 270 | |
| 570 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 420 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1460 |
| Melting Onset (Solidus), °C | 1390 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 2.5 |
| Density, g/cm3 | 8.0 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.7 | |
| 1.5 |
| Embodied Energy, MJ/kg | 64 | |
| 20 |
| Embodied Water, L/kg | 180 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 | |
| 87 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 | |
| 870 to 1700 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 22 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 20 | |
| 24 to 27 |
| Thermal Shock Resistance, points | 14 | |
| 23 to 27 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0.38 to 0.45 |
| Chromium (Cr), % | 17.5 to 19 | |
| 0.8 to 1.2 |
| Copper (Cu), % | 2.8 to 4.0 | |
| 0 |
| Iron (Fe), % | 53.7 to 61.3 | |
| 96.4 to 98.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 3.8 to 4.5 | |
| 0.15 to 0.3 |
| Nickel (Ni), % | 14.5 to 16.5 | |
| 0 |
| Nitrogen (N), % | 0.15 to 0.21 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |