S21800 Stainless Steel vs. EN 1.5918 Steel
Both S21800 stainless steel and EN 1.5918 steel are iron alloys. They have 66% 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 S21800 stainless steel and the bottom bar is EN 1.5918 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 160 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 740 | |
| 530 to 1390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 440 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1460 |
| Melting Onset (Solidus), °C | 1310 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 470 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 3.4 |
| Density, g/cm3 | 7.5 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.1 | |
| 1.6 |
| Embodied Energy, MJ/kg | 45 | |
| 21 |
| Embodied Water, L/kg | 150 | |
| 56 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 26 | |
| 24 |
| Strength to Weight: Axial, points | 27 | |
| 19 to 49 |
| Strength to Weight: Bending, points | 24 | |
| 18 to 35 |
| Thermal Shock Resistance, points | 17 | |
| 15 to 41 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0.14 to 0.2 |
| Chromium (Cr), % | 16 to 18 | |
| 1.4 to 1.7 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 59.1 to 65.4 | |
| 94.9 to 96.6 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0.5 to 0.9 |
| Nickel (Ni), % | 8.0 to 9.0 | |
| 1.4 to 1.7 |
| Nitrogen (N), % | 0.080 to 0.18 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.025 |
| Silicon (Si), % | 3.5 to 4.5 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |