S20910 Stainless Steel vs. AISI 321 Stainless Steel
Both S20910 stainless steel and AISI 321 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is S20910 stainless steel and the bottom bar is AISI 321 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 to 290 | |
| 170 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 39 | |
| 34 to 50 |
| Fatigue Strength, MPa | 310 to 460 | |
| 220 to 270 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 77 |
| Shear Strength, MPa | 500 to 570 | |
| 420 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 940 | |
| 590 to 690 |
| Tensile Strength: Yield (Proof), MPa | 430 to 810 | |
| 220 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 460 | |
| 480 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 870 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1430 |
| Melting Onset (Solidus), °C | 1380 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 13 | |
| 16 |
| Thermal Expansion, µm/m-K | 16 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 22 | |
| 16 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.8 | |
| 3.2 |
| Embodied Energy, MJ/kg | 68 | |
| 45 |
| Embodied Water, L/kg | 180 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 34 | |
| 19 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 260 | |
| 190 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 1640 | |
| 130 to 310 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 3.6 | |
| 4.1 |
| Thermal Shock Resistance, points | 17 to 21 | |
| 13 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.080 |
| Chromium (Cr), % | 20.5 to 23.5 | |
| 17 to 19 |
| Iron (Fe), % | 52.1 to 62.1 | |
| 65.3 to 74 |
| Manganese (Mn), % | 4.0 to 6.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 1.5 to 3.0 | |
| 0 |
| Nickel (Ni), % | 11.5 to 13.5 | |
| 9.0 to 12 |
| Niobium (Nb), % | 0.1 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0 to 0.7 |
| Vanadium (V), % | 0.1 to 0.3 | |
| 0 |