Nickel 684 vs. AWS BCo-1
Nickel 684 belongs to the nickel alloys classification, while AWS BCo-1 belongs to the cobalt alloys. They have 52% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is nickel 684 and the bottom bar is AWS BCo-1.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 76 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 1190 | |
| 700 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 420 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1150 |
| Melting Onset (Solidus), °C | 1320 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.3 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 8.0 |
| Embodied Energy, MJ/kg | 140 | |
| 110 |
| Embodied Water, L/kg | 360 | |
| 430 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 40 | |
| 24 |
| Strength to Weight: Bending, points | 30 | |
| 22 |
| Thermal Shock Resistance, points | 34 | |
| 21 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.3 | |
| 0 to 0.050 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0.7 to 0.9 |
| Carbon (C), % | 0 to 0.15 | |
| 0.35 to 0.45 |
| Chromium (Cr), % | 15 to 20 | |
| 18 to 20 |
| Cobalt (Co), % | 13 to 20 | |
| 46 to 54 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 |
| Iron (Fe), % | 0 to 4.0 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 to 0.75 | |
| 0 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0 |
| Nickel (Ni), % | 42.7 to 64 | |
| 16 to 18 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.020 |
| Selenium (Se), % | 0 | |
| 0 to 0.0050 |
| Silicon (Si), % | 0 to 0.75 | |
| 7.5 to 8.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.020 |
| Titanium (Ti), % | 2.5 to 3.3 | |
| 0 to 0.050 |
| Tungsten (W), % | 0 | |
| 3.5 to 4.5 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.050 |
| Residuals, % | 0 | |
| 0 to 0.5 |