EN 1.7221 Steel vs. AISI 416 Stainless Steel
Both EN 1.7221 steel and AISI 416 stainless steel are iron alloys. They have 88% 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 1.7221 steel and the bottom bar is AISI 416 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 230 | |
| 230 to 320 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 13 to 31 |
| Fatigue Strength, MPa | 290 to 390 | |
| 230 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 780 | |
| 510 to 800 |
| Tensile Strength: Yield (Proof), MPa | 430 to 630 | |
| 290 to 600 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 680 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1530 |
| Melting Onset (Solidus), °C | 1420 | |
| 1480 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 44 | |
| 30 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 7.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.9 |
| Embodied Energy, MJ/kg | 20 | |
| 27 |
| Embodied Water, L/kg | 51 | |
| 100 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 98 | |
| 98 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 490 to 1050 | |
| 220 to 940 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 23 to 27 | |
| 18 to 29 |
| Strength to Weight: Bending, points | 21 to 24 | |
| 18 to 25 |
| Thermal Diffusivity, mm2/s | 12 | |
| 8.1 |
| Thermal Shock Resistance, points | 19 to 23 | |
| 19 to 30 |
Alloy Composition
| Carbon (C), % | 0.22 to 0.29 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 12 to 14 |
| Iron (Fe), % | 96.8 to 98.3 | |
| 83.2 to 87.9 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 0 to 1.3 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0.15 to 0.35 |