S21904 Stainless Steel vs. AISI 403 Stainless Steel
Both S21904 stainless steel and AISI 403 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is S21904 stainless steel and the bottom bar is AISI 403 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 300 | |
| 190 to 240 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 17 to 51 | |
| 16 to 25 |
| Fatigue Strength, MPa | 380 to 550 | |
| 200 to 340 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 76 |
| Shear Strength, MPa | 510 to 620 | |
| 340 to 480 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 1000 | |
| 530 to 780 |
| Tensile Strength: Yield (Proof), MPa | 390 to 910 | |
| 280 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 430 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 740 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1450 |
| Melting Onset (Solidus), °C | 1350 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 14 | |
| 28 |
| Thermal Expansion, µm/m-K | 17 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 6.5 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 1.9 |
| Embodied Energy, MJ/kg | 43 | |
| 27 |
| Embodied Water, L/kg | 160 | |
| 99 |
Common Calculations
| PREN (Pitting Resistance) | 25 | |
| 12 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 to 310 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 2070 | |
| 210 to 840 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 36 | |
| 19 to 28 |
| Strength to Weight: Bending, points | 23 to 29 | |
| 19 to 24 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 7.6 |
| Thermal Shock Resistance, points | 15 to 21 | |
| 20 to 29 |
Alloy Composition
| Carbon (C), % | 0 to 0.040 | |
| 0 to 0.15 |
| Chromium (Cr), % | 19 to 21.5 | |
| 11.5 to 13 |
| Iron (Fe), % | 59.5 to 67.4 | |
| 84.7 to 88.5 |
| Manganese (Mn), % | 8.0 to 10 | |
| 0 to 1.0 |
| Nickel (Ni), % | 5.5 to 7.5 | |
| 0 to 0.6 |
| Nitrogen (N), % | 0.15 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |