SAE-AISI 5140 Steel vs. EN 1.4028 Stainless Steel
Both SAE-AISI 5140 steel and EN 1.4028 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 5140 steel and the bottom bar is EN 1.4028 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 29 | |
| 11 to 17 |
| Fatigue Strength, MPa | 220 to 570 | |
| 230 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 76 |
| Shear Strength, MPa | 360 to 600 | |
| 410 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 560 to 970 | |
| 660 to 930 |
| Tensile Strength: Yield (Proof), MPa | 290 to 840 | |
| 390 to 730 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 760 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 45 | |
| 30 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 2.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 7.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.9 |
| Embodied Energy, MJ/kg | 19 | |
| 27 |
| Embodied Water, L/kg | 49 | |
| 100 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 76 to 180 | |
| 94 to 96 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 220 to 1880 | |
| 380 to 1360 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 20 to 34 | |
| 24 to 33 |
| Strength to Weight: Bending, points | 19 to 28 | |
| 22 to 27 |
| Thermal Diffusivity, mm2/s | 12 | |
| 8.1 |
| Thermal Shock Resistance, points | 16 to 29 | |
| 23 to 32 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.43 | |
| 0.26 to 0.35 |
| Chromium (Cr), % | 0.7 to 0.9 | |
| 12 to 14 |
| Iron (Fe), % | 97.3 to 98.1 | |
| 83.1 to 87.7 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0 to 1.5 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.015 |