EN 1.4378 Stainless Steel vs. EN 1.4938 Stainless Steel
Both EN 1.4378 stainless steel and EN 1.4938 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 EN 1.4938 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 34 | |
| 16 to 17 |
| Fatigue Strength, MPa | 340 to 550 | |
| 390 to 520 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Shear Strength, MPa | 510 to 680 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 870 to 1030 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 640 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 270 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 750 |
| 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 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 10 |
| Density, g/cm3 | 7.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 3.3 |
| Embodied Energy, MJ/kg | 39 | |
| 47 |
| Embodied Water, L/kg | 150 | |
| 110 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 140 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 1050 to 1920 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 31 to 37 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 26 to 29 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 30 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 17 to 19 | |
| 11 to 12.5 |
| Iron (Fe), % | 61.2 to 69 | |
| 80.5 to 84.8 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0.4 to 0.9 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 2.0 |
| Nickel (Ni), % | 2.3 to 3.7 | |
| 2.0 to 3.0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0.020 to 0.040 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.4 |