EN 1.4378 Stainless Steel vs. EN 1.4020 Stainless Steel
Both EN 1.4378 stainless steel and EN 1.4020 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is EN 1.4020 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 190 to 340 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 34 | |
| 13 to 34 |
| Fatigue Strength, MPa | 340 to 550 | |
| 340 to 540 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 510 to 680 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 770 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 430 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 890 |
| Melting Completion (Liquidus), °C | 1390 | |
| 1390 |
| Melting Onset (Solidus), °C | 1350 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 11 |
| Density, g/cm3 | 7.6 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.5 |
| Embodied Energy, MJ/kg | 39 | |
| 37 |
| Embodied Water, L/kg | 150 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 23 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 140 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 460 to 2290 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 25 to 32 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.15 |
| Chromium (Cr), % | 17 to 19 | |
| 16.5 to 19 |
| Iron (Fe), % | 61.2 to 69 | |
| 62.8 to 71.8 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 11 to 14 |
| Nickel (Ni), % | 2.3 to 3.7 | |
| 0.5 to 2.5 |
| Nitrogen (N), % | 0.2 to 0.4 | |
| 0.2 to 0.45 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |