AISI 384 Stainless Steel vs. S21800 Stainless Steel
Both AISI 384 stainless steel and S21800 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is AISI 384 stainless steel and the bottom bar is S21800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 480 | |
| 740 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 340 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 900 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1360 |
| Melting Onset (Solidus), °C | 1380 | |
| 1310 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 500 |
| Thermal Expansion, µm/m-K | 16 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 20 | |
| 15 |
| Density, g/cm3 | 7.9 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 3.7 | |
| 3.1 |
| Embodied Energy, MJ/kg | 52 | |
| 45 |
| Embodied Water, L/kg | 150 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 16 | |
| 19 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 26 |
| Strength to Weight: Axial, points | 17 | |
| 27 |
| Strength to Weight: Bending, points | 17 | |
| 24 |
| Thermal Shock Resistance, points | 11 | |
| 17 |
Alloy Composition
| Carbon (C), % | 0 to 0.040 | |
| 0 to 0.1 |
| Chromium (Cr), % | 15 to 17 | |
| 16 to 18 |
| Iron (Fe), % | 60.9 to 68 | |
| 59.1 to 65.4 |
| Manganese (Mn), % | 0 to 2.0 | |
| 7.0 to 9.0 |
| Nickel (Ni), % | 17 to 19 | |
| 8.0 to 9.0 |
| Nitrogen (N), % | 0 | |
| 0.080 to 0.18 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 1.0 | |
| 3.5 to 4.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |