SAE-AISI 1080 Steel vs. AISI 440C Stainless Steel
Both SAE-AISI 1080 steel and AISI 440C stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1080 steel and the bottom bar is AISI 440C stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 | |
| 2.0 to 14 |
| Fatigue Strength, MPa | 300 to 360 | |
| 260 to 840 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 76 |
| Shear Strength, MPa | 460 to 520 | |
| 430 to 1120 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 870 | |
| 710 to 1970 |
| Tensile Strength: Yield (Proof), MPa | 480 to 590 | |
| 450 to 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 870 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1480 |
| Melting Onset (Solidus), °C | 1410 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 51 | |
| 22 |
| Thermal Expansion, µm/m-K | 12 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 9.6 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 11 | |
| 2.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 9.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.2 |
| Embodied Energy, MJ/kg | 19 | |
| 31 |
| Embodied Water, L/kg | 46 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 80 to 84 | |
| 39 to 88 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 31 | |
| 26 to 71 |
| Strength to Weight: Bending, points | 24 to 26 | |
| 23 to 46 |
| Thermal Diffusivity, mm2/s | 14 | |
| 6.0 |
| Thermal Shock Resistance, points | 25 to 29 | |
| 26 to 71 |
Alloy Composition
| Carbon (C), % | 0.75 to 0.88 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Iron (Fe), % | 98.1 to 98.7 | |
| 78 to 83.1 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.75 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.015 |