EN 1.4938 Stainless Steel vs. EN 1.4020 Stainless Steel
Both EN 1.4938 stainless steel and EN 1.4020 stainless steel are iron alloys. They have 82% 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 1.4938 stainless steel and the bottom bar is EN 1.4020 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 16 to 17 | |
| 13 to 34 |
| Fatigue Strength, MPa | 390 to 520 | |
| 340 to 540 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 540 to 630 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 770 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 430 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 890 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1390 |
| Melting Onset (Solidus), °C | 1420 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 11 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 2.5 |
| Embodied Energy, MJ/kg | 47 | |
| 37 |
| Embodied Water, L/kg | 110 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 23 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 140 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 460 to 2290 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 25 to 32 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.15 | |
| 0 to 0.15 |
| Chromium (Cr), % | 11 to 12.5 | |
| 16.5 to 19 |
| Iron (Fe), % | 80.5 to 84.8 | |
| 62.8 to 71.8 |
| Manganese (Mn), % | 0.4 to 0.9 | |
| 11 to 14 |
| Molybdenum (Mo), % | 1.5 to 2.0 | |
| 0 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0.5 to 2.5 |
| Nitrogen (N), % | 0.020 to 0.040 | |
| 0.2 to 0.45 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.25 to 0.4 | |
| 0 |