Nickel 685 vs. AISI 201 Stainless Steel
Nickel 685 belongs to the nickel alloys classification, while AISI 201 stainless steel belongs to the iron 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 nickel 685 and the bottom bar is AISI 201 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 350 | |
| 200 to 440 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 17 | |
| 4.6 to 51 |
| Fatigue Strength, MPa | 470 | |
| 280 to 600 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 770 | |
| 450 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 1250 | |
| 650 to 1450 |
| Tensile Strength: Yield (Proof), MPa | 850 | |
| 300 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 1000 | |
| 880 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1410 |
| Melting Onset (Solidus), °C | 1330 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 480 |
| Thermal Conductivity, W/m-K | 13 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 12 |
| Density, g/cm3 | 8.4 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 2.6 |
| Embodied Energy, MJ/kg | 140 | |
| 38 |
| Embodied Water, L/kg | 340 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 61 to 340 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1820 | |
| 230 to 2970 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 42 | |
| 23 to 52 |
| Strength to Weight: Bending, points | 31 | |
| 22 to 37 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 4.0 |
| Thermal Shock Resistance, points | 37 | |
| 14 to 32 |
Alloy Composition
| Aluminum (Al), % | 1.2 to 1.6 | |
| 0 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 |
| Carbon (C), % | 0.030 to 0.1 | |
| 0 to 0.15 |
| Chromium (Cr), % | 18 to 21 | |
| 16 to 18 |
| Cobalt (Co), % | 12 to 15 | |
| 0 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 0 to 2.0 | |
| 67.5 to 75 |
| Manganese (Mn), % | 0 to 1.0 | |
| 5.5 to 7.5 |
| Molybdenum (Mo), % | 3.5 to 5.0 | |
| 0 |
| Nickel (Ni), % | 49.6 to 62.5 | |
| 3.5 to 5.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Titanium (Ti), % | 2.8 to 3.3 | |
| 0 |
| Zinc (Zn), % | 0.020 to 0.12 | |
| 0 |