EN 1.4021 Stainless Steel vs. EN 1.4378 Stainless Steel
Both EN 1.4021 stainless steel and EN 1.4378 stainless steel are iron alloys. They have 79% 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 1.4021 stainless steel and the bottom bar is EN 1.4378 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 14 to 34 |
| Fatigue Strength, MPa | 240 to 380 | |
| 340 to 550 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 390 to 530 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 880 | |
| 760 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 390 to 670 | |
| 430 to 970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 910 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1390 |
| Melting Onset (Solidus), °C | 1400 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Expansion, µm/m-K | 11 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 12 |
| Density, g/cm3 | 7.7 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 2.7 |
| Embodied Energy, MJ/kg | 27 | |
| 39 |
| Embodied Water, L/kg | 100 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 23 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 110 | |
| 150 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 1160 | |
| 470 to 2370 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 23 to 31 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 21 to 26 | |
| 24 to 31 |
| Thermal Shock Resistance, points | 22 to 31 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0.16 to 0.25 | |
| 0 to 0.080 |
| Chromium (Cr), % | 12 to 14 | |
| 17 to 19 |
| Iron (Fe), % | 83.2 to 87.8 | |
| 61.2 to 69 |
| Manganese (Mn), % | 0 to 1.5 | |
| 11.5 to 14.5 |
| Nickel (Ni), % | 0 | |
| 2.3 to 3.7 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |