Nickel 686 vs. Nickel 242
Both nickel 686 and nickel 242 are nickel alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common.
For each property being compared, the top bar is nickel 686 and the bottom bar is nickel 242.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 220 |
| Elongation at Break, % | 51 | |
| 45 |
| Fatigue Strength, MPa | 410 | |
| 300 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 77 | |
| 84 |
| Shear Strength, MPa | 560 | |
| 570 |
| Tensile Strength: Ultimate (UTS), MPa | 780 | |
| 820 |
| Tensile Strength: Yield (Proof), MPa | 350 | |
| 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 330 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 930 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1380 |
| Melting Onset (Solidus), °C | 1340 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 400 |
| Thermal Conductivity, W/m-K | 9.8 | |
| 11 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.4 | |
| 1.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.4 | |
| 1.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 75 |
| Density, g/cm3 | 9.0 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 12 | |
| 14 |
| Embodied Energy, MJ/kg | 170 | |
| 180 |
| Embodied Water, L/kg | 300 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 320 | |
| 300 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 280 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 22 |
| Strength to Weight: Axial, points | 24 | |
| 25 |
| Strength to Weight: Bending, points | 21 | |
| 21 |
| Thermal Diffusivity, mm2/s | 2.6 | |
| 3.1 |
| Thermal Shock Resistance, points | 21 | |
| 25 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.5 |
| Boron (B), % | 0 | |
| 0 to 0.0060 |
| Carbon (C), % | 0 to 0.010 | |
| 0 to 0.030 |
| Chromium (Cr), % | 19 to 23 | |
| 7.0 to 9.0 |
| Cobalt (Co), % | 0 | |
| 0 to 1.0 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 0 to 5.0 | |
| 0 to 2.0 |
| Manganese (Mn), % | 0 to 0.75 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 15 to 17 | |
| 24 to 26 |
| Nickel (Ni), % | 49.5 to 63 | |
| 59.3 to 69 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.080 | |
| 0 to 0.8 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0.020 to 0.25 | |
| 0 |
| Tungsten (W), % | 3.0 to 4.4 | |
| 0 |