EN 1.4378 Stainless Steel vs. SAE-AISI 1140 Steel
Both EN 1.4378 stainless steel and SAE-AISI 1140 steel are iron alloys. They have 66% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is SAE-AISI 1140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 14 to 34 | |
| 14 to 18 |
| Fatigue Strength, MPa | 340 to 550 | |
| 230 to 370 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 72 |
| Shear Strength, MPa | 510 to 680 | |
| 370 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 600 to 700 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 340 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 400 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 1.8 |
| Density, g/cm3 | 7.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 1.4 |
| Embodied Energy, MJ/kg | 39 | |
| 18 |
| Embodied Water, L/kg | 150 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 89 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 310 to 870 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 20 to 22 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 18 to 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.37 to 0.44 |
| Chromium (Cr), % | 17 to 19 | |
| 0 |
| Iron (Fe), % | 61.2 to 69 | |
| 98.4 to 98.9 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0.7 to 1.0 |
| Nickel (Ni), % | 2.3 to 3.7 | |
| 0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0.080 to 0.13 |