EN 1.4313 Stainless Steel vs. SAE-AISI 4140 Steel
Both EN 1.4313 stainless steel and SAE-AISI 4140 steel are iron alloys. They have 84% of their average alloy composition in common. There are 30 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 EN 1.4313 stainless steel and the bottom bar is SAE-AISI 4140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 12 to 17 | |
| 11 to 26 |
| Fatigue Strength, MPa | 340 to 510 | |
| 360 to 650 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Shear Strength, MPa | 460 to 600 | |
| 410 to 660 |
| Tensile Strength: Ultimate (UTS), MPa | 750 to 1000 | |
| 690 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 580 to 910 | |
| 590 to 990 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 780 | |
| 420 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 25 | |
| 43 |
| Thermal Expansion, µm/m-K | 10 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 2.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 34 | |
| 20 |
| Embodied Water, L/kg | 110 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 150 | |
| 74 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 2100 | |
| 920 to 2590 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 36 | |
| 25 to 38 |
| Strength to Weight: Bending, points | 23 to 28 | |
| 22 to 30 |
| Thermal Diffusivity, mm2/s | 6.7 | |
| 12 |
| Thermal Shock Resistance, points | 27 to 36 | |
| 20 to 32 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 12 to 14 | |
| 0.8 to 1.1 |
| Iron (Fe), % | 78.5 to 84.2 | |
| 96.8 to 97.8 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0.3 to 0.7 | |
| 0.15 to 0.25 |
| Nickel (Ni), % | 3.5 to 4.5 | |
| 0 |
| Nitrogen (N), % | 0 to 0.020 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.7 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.040 |