Nickel 685 vs. ASTM F15 Fe-Ni-Co
Nickel 685 belongs to the nickel alloys classification, while ASTM F15 Fe-Ni-Co belongs to the iron alloys. They have 44% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is nickel 685 and the bottom bar is ASTM F15 Fe-Ni-Co.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1250 | |
| 520 to 880 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 270 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1410 |
| Melting Onset (Solidus), °C | 1330 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 460 |
| Thermal Conductivity, W/m-K | 13 | |
| 17 |
| Thermal Expansion, µm/m-K | 12 | |
| 6.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 49 |
| Density, g/cm3 | 8.4 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 5.2 |
| Embodied Energy, MJ/kg | 140 | |
| 71 |
| Embodied Water, L/kg | 340 | |
| 190 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 42 | |
| 17 to 29 |
| Strength to Weight: Bending, points | 31 | |
| 17 to 24 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 4.5 |
| Thermal Shock Resistance, points | 37 | |
| 32 to 55 |
Alloy Composition
| Aluminum (Al), % | 1.2 to 1.6 | |
| 0 to 0.1 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 |
| Carbon (C), % | 0.030 to 0.1 | |
| 0 to 0.040 |
| Chromium (Cr), % | 18 to 21 | |
| 0 to 0.2 |
| Cobalt (Co), % | 12 to 15 | |
| 16 to 18 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 to 0.2 |
| Iron (Fe), % | 0 to 2.0 | |
| 50.3 to 56 |
| Magnesium (Mg), % | 0 | |
| 0 to 0.1 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 3.5 to 5.0 | |
| 0 to 0.2 |
| Nickel (Ni), % | 49.6 to 62.5 | |
| 28 to 30 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.2 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 2.8 to 3.3 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0.020 to 0.12 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.1 |