Nickel 684 vs. AISI 201LN Stainless Steel
Nickel 684 belongs to the nickel alloys classification, while AISI 201LN stainless steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is nickel 684 and the bottom bar is AISI 201LN stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 310 | |
| 210 to 320 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 11 | |
| 25 to 51 |
| Fatigue Strength, MPa | 390 | |
| 340 to 540 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 710 | |
| 530 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 1190 | |
| 740 to 1060 |
| Tensile Strength: Yield (Proof), MPa | 800 | |
| 350 to 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 1000 | |
| 880 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1410 |
| Melting Onset (Solidus), °C | 1320 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 12 |
| Density, g/cm3 | 8.3 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 2.6 |
| Embodied Energy, MJ/kg | 140 | |
| 38 |
| Embodied Water, L/kg | 360 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 230 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1610 | |
| 310 to 1520 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 40 | |
| 27 to 38 |
| Strength to Weight: Bending, points | 30 | |
| 24 to 30 |
| Thermal Shock Resistance, points | 34 | |
| 16 to 23 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.3 | |
| 0 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.030 |
| Chromium (Cr), % | 15 to 20 | |
| 16 to 17.5 |
| Cobalt (Co), % | 13 to 20 | |
| 0 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 to 1.0 |
| Iron (Fe), % | 0 to 4.0 | |
| 67.9 to 73.5 |
| Manganese (Mn), % | 0 to 0.75 | |
| 6.4 to 7.5 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0 |
| Nickel (Ni), % | 42.7 to 64 | |
| 4.0 to 5.0 |
| Nitrogen (N), % | 0 | |
| 0.1 to 0.25 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Titanium (Ti), % | 2.5 to 3.3 | |
| 0 |