AISI 440B Stainless Steel vs. AISI 403 Stainless Steel
Both AISI 440B stainless steel and AISI 403 stainless steel are iron alloys. They have a moderately high 94% 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 440B stainless steel and the bottom bar is AISI 403 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.0 to 18 | |
| 16 to 25 |
| Fatigue Strength, MPa | 260 to 850 | |
| 200 to 340 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Shear Strength, MPa | 460 to 1110 | |
| 340 to 480 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 1930 | |
| 530 to 780 |
| Tensile Strength: Yield (Proof), MPa | 430 to 1860 | |
| 280 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 740 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1450 |
| Melting Onset (Solidus), °C | 1370 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 23 | |
| 28 |
| Thermal Expansion, µm/m-K | 10 | |
| 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 | 9.0 | |
| 6.5 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 1.9 |
| Embodied Energy, MJ/kg | 31 | |
| 27 |
| Embodied Water, L/kg | 120 | |
| 99 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 12 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 to 110 | |
| 110 to 120 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 70 | |
| 19 to 28 |
| Strength to Weight: Bending, points | 24 to 45 | |
| 19 to 24 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 7.6 |
| Thermal Shock Resistance, points | 27 to 70 | |
| 20 to 29 |
Alloy Composition
| Carbon (C), % | 0.75 to 1.0 | |
| 0 to 0.15 |
| Chromium (Cr), % | 16 to 18 | |
| 11.5 to 13 |
| Iron (Fe), % | 78.2 to 83.3 | |
| 84.7 to 88.5 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0 to 0.6 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |