AISI 403 Stainless Steel vs. Hardened AISI 440C
Both AISI 403 stainless steel and hardened AISI 440C 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 403 stainless steel and the bottom bar is hardened AISI 440C.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 16 to 25 | |
| 2.0 |
| Fatigue Strength, MPa | 200 to 340 | |
| 840 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 340 to 480 | |
| 1120 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 780 | |
| 1970 |
| Tensile Strength: Yield (Proof), MPa | 280 to 570 | |
| 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 740 | |
| 870 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1480 |
| Melting Onset (Solidus), °C | 1400 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 28 | |
| 22 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 2.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 9.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 2.2 |
| Embodied Energy, MJ/kg | 27 | |
| 31 |
| Embodied Water, L/kg | 99 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 12 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 39 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 19 to 28 | |
| 71 |
| Strength to Weight: Bending, points | 19 to 24 | |
| 46 |
| Thermal Diffusivity, mm2/s | 7.6 | |
| 6.0 |
| Thermal Shock Resistance, points | 20 to 29 | |
| 71 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 11.5 to 13 | |
| 16 to 18 |
| Iron (Fe), % | 84.7 to 88.5 | |
| 78 to 83.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.75 |
| Nickel (Ni), % | 0 to 0.6 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |