EN 1.4378 Stainless Steel vs. SAE-AISI 1021 Steel
Both EN 1.4378 stainless steel and SAE-AISI 1021 steel are iron alloys. They have 66% 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 SAE-AISI 1021 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 340 | |
| 130 to 150 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 14 to 34 | |
| 17 to 27 |
| Fatigue Strength, MPa | 340 to 550 | |
| 190 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Shear Strength, MPa | 510 to 680 | |
| 310 to 320 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 1130 | |
| 480 to 530 |
| Tensile Strength: Yield (Proof), MPa | 430 to 970 | |
| 260 to 450 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 400 |
| 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 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 1.8 |
| Density, g/cm3 | 7.6 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 1.4 |
| Embodied Energy, MJ/kg | 39 | |
| 18 |
| Embodied Water, L/kg | 150 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 to 220 | |
| 84 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 2370 | |
| 180 to 530 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 41 | |
| 17 to 19 |
| Strength to Weight: Bending, points | 24 to 31 | |
| 17 to 18 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 15 to 17 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.18 to 0.23 |
| Chromium (Cr), % | 17 to 19 | |
| 0 |
| Iron (Fe), % | 61.2 to 69 | |
| 98.8 to 99.22 |
| Manganese (Mn), % | 11.5 to 14.5 | |
| 0.6 to 0.9 |
| 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 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.050 |