EN 1.5521 Steel vs. S21800 Stainless Steel
Both EN 1.5521 steel and S21800 stainless steel are iron alloys. They have 64% 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 1.5521 steel and the bottom bar is S21800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 180 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 21 | |
| 40 |
| Fatigue Strength, MPa | 210 to 310 | |
| 330 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 59 to 72 | |
| 62 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 310 to 360 | |
| 510 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 1390 | |
| 740 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 340 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 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 | 1.9 | |
| 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 | 47 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 to 230 | |
| 250 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 630 | |
| 390 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 26 |
| Strength to Weight: Axial, points | 15 to 49 | |
| 27 |
| Strength to Weight: Bending, points | 16 to 35 | |
| 24 |
| Thermal Shock Resistance, points | 13 to 41 | |
| 17 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.16 to 0.2 | |
| 0 to 0.1 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98 to 98.9 | |
| 59.1 to 65.4 |
| Manganese (Mn), % | 0.9 to 1.2 | |
| 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 |