S21800 Stainless Steel vs. AISI 414 Stainless Steel
Both S21800 stainless steel and AISI 414 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is S21800 stainless steel and the bottom bar is AISI 414 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 40 | |
| 17 |
| Fatigue Strength, MPa | 330 | |
| 430 to 480 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Reduction in Area, % | 62 | |
| 50 |
| Shear Modulus, GPa | 75 | |
| 76 |
| Shear Strength, MPa | 510 | |
| 550 to 590 |
| Tensile Strength: Ultimate (UTS), MPa | 740 | |
| 900 to 960 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 700 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 750 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1440 |
| Melting Onset (Solidus), °C | 1310 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 480 |
| Thermal Expansion, µm/m-K | 16 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 8.0 |
| Density, g/cm3 | 7.5 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.1 | |
| 2.1 |
| Embodied Energy, MJ/kg | 45 | |
| 29 |
| Embodied Water, L/kg | 150 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 19 | |
| 13 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 250 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 390 | |
| 1260 to 1590 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 26 | |
| 25 |
| Strength to Weight: Axial, points | 27 | |
| 32 to 34 |
| Strength to Weight: Bending, points | 24 | |
| 27 to 28 |
| Thermal Shock Resistance, points | 17 | |
| 33 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.15 |
| Chromium (Cr), % | 16 to 18 | |
| 11.5 to 13.5 |
| Iron (Fe), % | 59.1 to 65.4 | |
| 81.8 to 87.3 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 8.0 to 9.0 | |
| 1.3 to 2.5 |
| Nitrogen (N), % | 0.080 to 0.18 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.040 |
| Silicon (Si), % | 3.5 to 4.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |