SAE-AISI 4150 Steel vs. EN 1.4378 Stainless Steel
Both SAE-AISI 4150 steel and EN 1.4378 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 4150 steel and the bottom bar is EN 1.4378 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 380 | |
| 190 to 340 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 12 to 20 | |
| 14 to 34 |
| Fatigue Strength, MPa | 260 to 780 | |
| 340 to 550 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 410 to 800 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 660 to 1310 | |
| 760 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1220 | |
| 430 to 970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 910 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1390 |
| Melting Onset (Solidus), °C | 1420 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 12 |
| Density, g/cm3 | 7.8 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.7 |
| Embodied Energy, MJ/kg | 20 | |
| 39 |
| Embodied Water, L/kg | 51 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 180 | |
| 150 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 3930 | |
| 470 to 2370 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 24 to 47 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 22 to 34 | |
| 24 to 31 |
| Thermal Shock Resistance, points | 19 to 39 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0.48 to 0.53 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 17 to 19 |
| Iron (Fe), % | 96.7 to 97.7 | |
| 61.2 to 69 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 11.5 to 14.5 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 2.3 to 3.7 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.060 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |