EN 1.4378 Stainless Steel vs. EN 1.6771 Steel
Both EN 1.4378 stainless steel and EN 1.6771 steel are iron alloys. They have 70% 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 EN 1.6771 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 280 to 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 14 to 34 | |
| 8.0 to 8.7 |
| Fatigue Strength, MPa | 340 to 550 | |
| 440 to 680 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 930 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 740 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 440 |
| 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 | |
| 5.0 |
| Density, g/cm3 | 7.6 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 1.9 |
| Embodied Energy, MJ/kg | 39 | |
| 25 |
| Embodied Water, L/kg | 150 | |
| 58 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 2.5 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 75 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 1460 to 3450 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 33 to 41 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 27 to 31 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 27 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.27 to 0.33 |
| Chromium (Cr), % | 17 to 19 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 61.2 to 69 | |
| 92.2 to 95 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 2.3 to 3.7 | |
| 3.0 to 4.0 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |