EN 1.4021 Stainless Steel vs. EN 1.4104 Stainless Steel
Both EN 1.4021 stainless steel and EN 1.4104 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4021 stainless steel and the bottom bar is EN 1.4104 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 11 to 23 |
| Fatigue Strength, MPa | 240 to 380 | |
| 230 to 310 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 390 to 530 | |
| 400 to 450 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 880 | |
| 630 to 750 |
| Tensile Strength: Yield (Proof), MPa | 390 to 670 | |
| 350 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 860 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1400 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 25 |
| Thermal Expansion, µm/m-K | 11 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 8.5 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 2.2 |
| Embodied Energy, MJ/kg | 27 | |
| 30 |
| Embodied Water, L/kg | 100 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 110 | |
| 77 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 1160 | |
| 310 to 800 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 23 to 31 | |
| 23 to 27 |
| Strength to Weight: Bending, points | 21 to 26 | |
| 21 to 24 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 6.7 |
| Thermal Shock Resistance, points | 22 to 31 | |
| 22 to 27 |
Alloy Composition
| Carbon (C), % | 0.16 to 0.25 | |
| 0.1 to 0.17 |
| Chromium (Cr), % | 12 to 14 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 83.2 to 87.8 | |
| 78.8 to 84.1 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.6 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0.15 to 0.35 |