AISI 403 Stainless Steel vs. SAE-AISI 4320 Steel
Both AISI 403 stainless steel and SAE-AISI 4320 steel are iron alloys. They have 88% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is AISI 403 stainless steel and the bottom bar is SAE-AISI 4320 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 240 | |
| 160 to 240 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 16 to 25 | |
| 21 to 29 |
| Fatigue Strength, MPa | 200 to 340 | |
| 320 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Shear Strength, MPa | 340 to 480 | |
| 370 to 500 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 780 | |
| 570 to 790 |
| Tensile Strength: Yield (Proof), MPa | 280 to 570 | |
| 430 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 740 | |
| 420 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 28 | |
| 46 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 3.4 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 1.7 |
| Embodied Energy, MJ/kg | 27 | |
| 22 |
| Embodied Water, L/kg | 99 | |
| 52 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 to 840 | |
| 480 to 560 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 28 | |
| 20 to 28 |
| Strength to Weight: Bending, points | 19 to 24 | |
| 19 to 24 |
| Thermal Diffusivity, mm2/s | 7.6 | |
| 13 |
| Thermal Shock Resistance, points | 20 to 29 | |
| 19 to 27 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0.17 to 0.22 |
| Chromium (Cr), % | 11.5 to 13 | |
| 0.4 to 0.6 |
| Iron (Fe), % | 84.7 to 88.5 | |
| 95.8 to 97 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.45 to 0.65 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 0 to 0.6 | |
| 1.7 to 2.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.040 |