EN 1.4378 Stainless Steel vs. AISI 440C Stainless Steel
Both EN 1.4378 stainless steel and AISI 440C stainless steel are iron alloys. They have 83% 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 EN 1.4378 stainless steel and the bottom bar is AISI 440C stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 34 | |
| 2.0 to 14 |
| Fatigue Strength, MPa | 340 to 550 | |
| 260 to 840 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Shear Strength, MPa | 510 to 680 | |
| 430 to 1120 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 710 to 1970 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 450 to 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 870 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1480 |
| Melting Onset (Solidus), °C | 1350 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Expansion, µm/m-K | 17 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 9.0 |
| Density, g/cm3 | 7.6 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.2 |
| Embodied Energy, MJ/kg | 39 | |
| 31 |
| Embodied Water, L/kg | 150 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 39 to 88 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 26 to 71 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 23 to 46 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 26 to 71 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 17 to 19 | |
| 16 to 18 |
| Iron (Fe), % | 61.2 to 69 | |
| 78 to 83.1 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.75 |
| 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 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |