EN 1.4571 Stainless Steel vs. EN 1.4640 Stainless Steel
Both EN 1.4571 stainless steel and EN 1.4640 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4571 stainless steel and the bottom bar is EN 1.4640 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 270 | |
| 190 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 14 to 40 | |
| 51 |
| Fatigue Strength, MPa | 200 to 330 | |
| 230 to 250 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 77 |
| Shear Strength, MPa | 410 to 550 | |
| 440 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 900 | |
| 620 to 650 |
| Tensile Strength: Yield (Proof), MPa | 230 to 570 | |
| 240 to 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 480 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 950 | |
| 930 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1420 |
| Melting Onset (Solidus), °C | 1400 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 15 | |
| 15 |
| Thermal Expansion, µm/m-K | 17 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.3 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.6 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 14 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.9 | |
| 2.8 |
| Embodied Energy, MJ/kg | 54 | |
| 40 |
| Embodied Water, L/kg | 150 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 25 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 190 | |
| 250 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 820 | |
| 150 to 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 32 | |
| 22 to 23 |
| Strength to Weight: Bending, points | 20 to 26 | |
| 21 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 4.0 |
| Thermal Shock Resistance, points | 13 to 20 | |
| 14 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.030 to 0.080 |
| Chromium (Cr), % | 16.5 to 18.5 | |
| 18 to 19 |
| Copper (Cu), % | 0 | |
| 1.3 to 2.0 |
| Iron (Fe), % | 61.7 to 71 | |
| 67.4 to 73.6 |
| Manganese (Mn), % | 0 to 2.0 | |
| 1.5 to 4.0 |
| Molybdenum (Mo), % | 2.0 to 2.5 | |
| 0 |
| Nickel (Ni), % | 10.5 to 13.5 | |
| 5.5 to 6.9 |
| Nitrogen (N), % | 0 | |
| 0.030 to 0.11 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 to 0.7 | |
| 0 |