EN 1.7711 Steel vs. EN 1.4421 Stainless Steel
Both EN 1.7711 steel and EN 1.4421 stainless steel are iron alloys. They have 80% 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 1.7711 steel and the bottom bar is EN 1.4421 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 16 to 22 | |
| 11 to 17 |
| Fatigue Strength, MPa | 290 to 520 | |
| 380 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 930 | |
| 880 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 400 to 800 | |
| 620 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 870 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 33 | |
| 16 |
| Thermal Expansion, µm/m-K | 11 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.0 | |
| 12 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 2.6 |
| Embodied Energy, MJ/kg | 32 | |
| 36 |
| Embodied Water, L/kg | 54 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 2.9 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 140 | |
| 120 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 430 to 1690 | |
| 960 to 2270 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 24 to 33 | |
| 31 to 39 |
| Strength to Weight: Bending, points | 22 to 27 | |
| 26 to 30 |
| Thermal Diffusivity, mm2/s | 8.9 | |
| 4.4 |
| Thermal Shock Resistance, points | 24 to 32 | |
| 31 to 39 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.015 | |
| 0 |
| Carbon (C), % | 0.36 to 0.44 | |
| 0 to 0.060 |
| Chromium (Cr), % | 0.9 to 1.2 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 96 to 97.5 | |
| 74.4 to 80.5 |
| Manganese (Mn), % | 0.45 to 0.85 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.5 to 0.65 | |
| 0 to 0.7 |
| Nickel (Ni), % | 0 | |
| 4.0 to 5.5 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.8 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Vanadium (V), % | 0.25 to 0.35 | |
| 0 |