EN 1.4640 Stainless Steel vs. AISI 201LN Stainless Steel
Both EN 1.4640 stainless steel and AISI 201LN stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is AISI 201LN stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 200 | |
| 210 to 320 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 51 | |
| 25 to 51 |
| Fatigue Strength, MPa | 230 to 250 | |
| 340 to 540 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 440 to 460 | |
| 530 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 650 | |
| 740 to 1060 |
| Tensile Strength: Yield (Proof), MPa | 240 to 260 | |
| 350 to 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 420 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 930 | |
| 880 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1410 |
| Melting Onset (Solidus), °C | 1380 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 15 | |
| 15 |
| Thermal Expansion, µm/m-K | 16 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 14 | |
| 12 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 2.6 |
| Embodied Energy, MJ/kg | 40 | |
| 38 |
| Embodied Water, L/kg | 150 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 20 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 250 to 260 | |
| 230 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 170 | |
| 310 to 1520 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 22 to 23 | |
| 27 to 38 |
| Strength to Weight: Bending, points | 21 | |
| 24 to 30 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 4.0 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0.030 to 0.080 | |
| 0 to 0.030 |
| Chromium (Cr), % | 18 to 19 | |
| 16 to 17.5 |
| Copper (Cu), % | 1.3 to 2.0 | |
| 0 to 1.0 |
| Iron (Fe), % | 67.4 to 73.6 | |
| 67.9 to 73.5 |
| Manganese (Mn), % | 1.5 to 4.0 | |
| 6.4 to 7.5 |
| Nickel (Ni), % | 5.5 to 6.9 | |
| 4.0 to 5.0 |
| Nitrogen (N), % | 0.030 to 0.11 | |
| 0.1 to 0.25 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |