R31539 Cobalt vs. C77000 Nickel Silver
R31539 cobalt belongs to the cobalt alloys classification, while C77000 nickel silver belongs to the copper alloys. There are 22 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 R31539 cobalt and the bottom bar is C77000 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 120 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 86 | |
| 46 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1340 | |
| 420 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 200 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1050 |
| Melting Onset (Solidus), °C | 1290 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 400 |
| Thermal Conductivity, W/m-K | 13 | |
| 29 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 5.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 6.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 4.1 |
| Embodied Energy, MJ/kg | 110 | |
| 63 |
| Embodied Water, L/kg | 530 | |
| 300 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 24 | |
| 20 |
| Strength to Weight: Axial, points | 33 to 44 | |
| 14 to 27 |
| Strength to Weight: Bending, points | 27 to 32 | |
| 15 to 23 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 8.8 |
| Thermal Shock Resistance, points | 24 to 32 | |
| 15 to 28 |
Alloy Composition
| Aluminum (Al), % | 0.3 to 1.0 | |
| 0 |
| Carbon (C), % | 0 to 0.14 | |
| 0 |
| Chromium (Cr), % | 26 to 30 | |
| 0 |
| Cobalt (Co), % | 57.7 to 68.7 | |
| 0 |
| Copper (Cu), % | 0 | |
| 53.5 to 56.5 |
| Iron (Fe), % | 0 to 0.75 | |
| 0 to 0.25 |
| Lanthanum (La), % | 0.030 to 0.2 | |
| 0 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 16.5 to 19.5 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 22.7 to 30 |
| Residuals, % | 0 | |
| 0 to 0.5 |