Nickel 625 vs. Nickel 686
Both nickel 625 and nickel 686 are nickel alloys. They have 89% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is nickel 625 and the bottom bar is nickel 686.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 220 |
| Elongation at Break, % | 33 to 34 | |
| 51 |
| Fatigue Strength, MPa | 240 to 320 | |
| 410 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 77 |
| Shear Strength, MPa | 530 to 600 | |
| 560 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 910 | |
| 780 |
| Tensile Strength: Yield (Proof), MPa | 320 to 450 | |
| 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 980 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1380 |
| Melting Onset (Solidus), °C | 1290 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 420 |
| Thermal Conductivity, W/m-K | 11 | |
| 9.8 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.3 | |
| 1.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.4 | |
| 1.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 70 |
| Density, g/cm3 | 8.6 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 14 | |
| 12 |
| Embodied Energy, MJ/kg | 190 | |
| 170 |
| Embodied Water, L/kg | 290 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 220 to 250 | |
| 320 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 490 | |
| 280 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 22 |
| Strength to Weight: Axial, points | 26 to 29 | |
| 24 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 21 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 2.6 |
| Thermal Shock Resistance, points | 22 to 25 | |
| 21 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.4 | |
| 0 |
| Carbon (C), % | 0 to 0.1 | |
| 0 to 0.010 |
| Chromium (Cr), % | 20 to 23 | |
| 19 to 23 |
| Cobalt (Co), % | 0 to 1.0 | |
| 0 |
| Iron (Fe), % | 0 to 5.0 | |
| 0 to 5.0 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 0.75 |
| Molybdenum (Mo), % | 8.0 to 10 | |
| 15 to 17 |
| Nickel (Ni), % | 58 to 68.9 | |
| 49.5 to 63 |
| Niobium (Nb), % | 3.2 to 4.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.080 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.020 |
| Titanium (Ti), % | 0 to 0.4 | |
| 0.020 to 0.25 |
| Tungsten (W), % | 0 | |
| 3.0 to 4.4 |