S20910 Stainless Steel vs. S21904 Stainless Steel
Both S20910 stainless steel and S21904 stainless steel are iron alloys. They have 90% 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 S21904 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 to 290 | |
| 210 to 300 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 39 | |
| 17 to 51 |
| Fatigue Strength, MPa | 310 to 460 | |
| 380 to 550 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 78 |
| Shear Strength, MPa | 500 to 570 | |
| 510 to 620 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 940 | |
| 700 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 430 to 810 | |
| 390 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 460 | |
| 430 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 980 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1400 |
| Melting Onset (Solidus), °C | 1380 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 13 | |
| 14 |
| Thermal Expansion, µm/m-K | 16 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 22 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 4.8 | |
| 3.0 |
| Embodied Energy, MJ/kg | 68 | |
| 43 |
| Embodied Water, L/kg | 180 | |
| 160 |
Common Calculations
| PREN (Pitting Resistance) | 34 | |
| 25 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 260 | |
| 160 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 1640 | |
| 380 to 2070 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 25 to 36 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 23 to 29 |
| Thermal Diffusivity, mm2/s | 3.6 | |
| 3.8 |
| Thermal Shock Resistance, points | 17 to 21 | |
| 15 to 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.040 |
| Chromium (Cr), % | 20.5 to 23.5 | |
| 19 to 21.5 |
| Iron (Fe), % | 52.1 to 62.1 | |
| 59.5 to 67.4 |
| Manganese (Mn), % | 4.0 to 6.0 | |
| 8.0 to 10 |
| Molybdenum (Mo), % | 1.5 to 3.0 | |
| 0 |
| Nickel (Ni), % | 11.5 to 13.5 | |
| 5.5 to 7.5 |
| Niobium (Nb), % | 0.1 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0.15 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.1 to 0.3 | |
| 0 |