EN 1.4421 Stainless Steel vs. EN 1.4303 Stainless Steel
Both EN 1.4421 stainless steel and EN 1.4303 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is EN 1.4303 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 13 to 49 |
| Fatigue Strength, MPa | 380 to 520 | |
| 220 to 320 |
| Impact Strength: V-Notched Charpy, J | 30 to 67 | |
| 91 to 98 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 880 to 1100 | |
| 590 to 900 |
| Tensile Strength: Yield (Proof), MPa | 620 to 950 | |
| 230 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 940 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1420 |
| Melting Onset (Solidus), °C | 1400 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 16 | |
| 15 |
| Thermal Expansion, µm/m-K | 10 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 17 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 3.2 |
| Embodied Energy, MJ/kg | 36 | |
| 46 |
| Embodied Water, L/kg | 130 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 19 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 140 | |
| 110 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 to 2270 | |
| 140 to 800 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 39 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 26 to 30 | |
| 20 to 26 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 4.0 |
| Thermal Shock Resistance, points | 31 to 39 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.060 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 17 to 19 |
| Iron (Fe), % | 74.4 to 80.5 | |
| 64.8 to 72 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.7 | |
| 0 |
| Nickel (Ni), % | 4.0 to 5.5 | |
| 11 to 13 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.8 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.015 |