AISI 201LN Stainless Steel vs. Nickel 685
AISI 201LN stainless steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is nickel 685.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 320 | |
| 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 25 to 51 | |
| 17 |
| Fatigue Strength, MPa | 340 to 540 | |
| 470 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 530 to 680 | |
| 770 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 1060 | |
| 1250 |
| Tensile Strength: Yield (Proof), MPa | 350 to 770 | |
| 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 880 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1380 |
| Melting Onset (Solidus), °C | 1370 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 460 |
| Thermal Conductivity, W/m-K | 15 | |
| 13 |
| Thermal Expansion, µm/m-K | 17 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 75 |
| Density, g/cm3 | 7.7 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 10 |
| Embodied Energy, MJ/kg | 38 | |
| 140 |
| Embodied Water, L/kg | 140 | |
| 340 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 230 to 310 | |
| 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 310 to 1520 | |
| 1820 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 27 to 38 | |
| 42 |
| Strength to Weight: Bending, points | 24 to 30 | |
| 31 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 3.3 |
| Thermal Shock Resistance, points | 16 to 23 | |
| 37 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 1.2 to 1.6 |
| Boron (B), % | 0 | |
| 0.0030 to 0.010 |
| Carbon (C), % | 0 to 0.030 | |
| 0.030 to 0.1 |
| Chromium (Cr), % | 16 to 17.5 | |
| 18 to 21 |
| Cobalt (Co), % | 0 | |
| 12 to 15 |
| Copper (Cu), % | 0 to 1.0 | |
| 0 to 0.5 |
| Iron (Fe), % | 67.9 to 73.5 | |
| 0 to 2.0 |
| Manganese (Mn), % | 6.4 to 7.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 5.0 |
| Nickel (Ni), % | 4.0 to 5.0 | |
| 49.6 to 62.5 |
| Nitrogen (N), % | 0.1 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 2.8 to 3.3 |
| Zinc (Zn), % | 0 | |
| 0.020 to 0.12 |