EN 1.4418 Stainless Steel vs. EN 1.1221 Steel
Both EN 1.4418 stainless steel and EN 1.1221 steel are iron alloys. They have 78% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is EN 1.1221 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 16 to 20 | |
| 10 to 21 |
| Fatigue Strength, MPa | 350 to 480 | |
| 240 to 340 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 72 |
| Shear Strength, MPa | 530 to 620 | |
| 450 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 860 to 1000 | |
| 730 to 870 |
| Tensile Strength: Yield (Proof), MPa | 540 to 790 | |
| 390 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 400 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 48 |
| Thermal Expansion, µm/m-K | 10 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 1.5 |
| Embodied Energy, MJ/kg | 39 | |
| 19 |
| Embodied Water, L/kg | 130 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 170 | |
| 67 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 730 to 1590 | |
| 410 to 800 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 31 to 36 | |
| 26 to 31 |
| Strength to Weight: Bending, points | 26 to 28 | |
| 23 to 26 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 13 |
| Thermal Shock Resistance, points | 31 to 36 | |
| 23 to 28 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0.57 to 0.65 |
| Chromium (Cr), % | 15 to 17 | |
| 0 to 0.4 |
| Iron (Fe), % | 73.2 to 80.2 | |
| 97.1 to 98.8 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0.8 to 1.5 | |
| 0 to 0.1 |
| Nickel (Ni), % | 4.0 to 6.0 | |
| 0 to 0.4 |
| Nitrogen (N), % | 0 to 0.020 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.7 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.035 |