AISI 440B Stainless Steel vs. SAE-AISI 5140 Steel
Both AISI 440B stainless steel and SAE-AISI 5140 steel are iron alloys. They have 83% of their average alloy composition in common. There are 29 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 SAE-AISI 5140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.0 to 18 | |
| 12 to 29 |
| Fatigue Strength, MPa | 260 to 850 | |
| 220 to 570 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Shear Strength, MPa | 460 to 1110 | |
| 360 to 600 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 1930 | |
| 560 to 970 |
| Tensile Strength: Yield (Proof), MPa | 430 to 1860 | |
| 290 to 840 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 420 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1460 |
| Melting Onset (Solidus), °C | 1370 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 23 | |
| 45 |
| Thermal Expansion, µm/m-K | 10 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 2.1 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 1.4 |
| Embodied Energy, MJ/kg | 31 | |
| 19 |
| Embodied Water, L/kg | 120 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 to 110 | |
| 76 to 180 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 70 | |
| 20 to 34 |
| Strength to Weight: Bending, points | 24 to 45 | |
| 19 to 28 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 12 |
| Thermal Shock Resistance, points | 27 to 70 | |
| 16 to 29 |
Alloy Composition
| Carbon (C), % | 0.75 to 1.0 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 16 to 18 | |
| 0.7 to 0.9 |
| Iron (Fe), % | 78.2 to 83.3 | |
| 97.3 to 98.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.7 to 0.9 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.040 |