SAE-AISI 5140 Steel vs. SAE-AISI 1080 Steel
Both SAE-AISI 5140 steel and SAE-AISI 1080 steel are iron alloys. They have a very high 99% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 5140 steel and the bottom bar is SAE-AISI 1080 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 290 | |
| 220 to 260 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 29 | |
| 11 |
| Fatigue Strength, MPa | 220 to 570 | |
| 300 to 360 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 360 to 600 | |
| 460 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 560 to 970 | |
| 770 to 870 |
| Tensile Strength: Yield (Proof), MPa | 290 to 840 | |
| 480 to 590 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 45 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 9.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 19 | |
| 19 |
| Embodied Water, L/kg | 49 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 76 to 180 | |
| 80 to 84 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 220 to 1880 | |
| 610 to 920 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 to 34 | |
| 27 to 31 |
| Strength to Weight: Bending, points | 19 to 28 | |
| 24 to 26 |
| Thermal Diffusivity, mm2/s | 12 | |
| 14 |
| Thermal Shock Resistance, points | 16 to 29 | |
| 25 to 29 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.43 | |
| 0.75 to 0.88 |
| Chromium (Cr), % | 0.7 to 0.9 | |
| 0 |
| Iron (Fe), % | 97.3 to 98.1 | |
| 98.1 to 98.7 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.050 |