EN 1.7131 Steel vs. S21800 Stainless Steel
Both EN 1.7131 steel and S21800 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is EN 1.7131 steel and the bottom bar is S21800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 170 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 470 to 1390 | |
| 740 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 340 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 900 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1360 |
| Melting Onset (Solidus), °C | 1420 | |
| 1310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 500 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.2 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.1 |
| Embodied Energy, MJ/kg | 19 | |
| 45 |
| Embodied Water, L/kg | 51 | |
| 150 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 26 |
| Strength to Weight: Axial, points | 17 to 49 | |
| 27 |
| Strength to Weight: Bending, points | 17 to 35 | |
| 24 |
| Thermal Shock Resistance, points | 14 to 41 | |
| 17 |
Alloy Composition
| Carbon (C), % | 0.14 to 0.19 | |
| 0 to 0.1 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 16 to 18 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 96.8 to 98.1 | |
| 59.1 to 65.4 |
| Manganese (Mn), % | 1.0 to 1.3 | |
| 7.0 to 9.0 |
| Nickel (Ni), % | 0 | |
| 8.0 to 9.0 |
| Nitrogen (N), % | 0 | |
| 0.080 to 0.18 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 0.3 | |
| 3.5 to 4.5 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |