R31233 Cobalt vs. C78200 Nickel Silver
R31233 cobalt belongs to the cobalt alloys classification, while C78200 nickel silver belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is R31233 cobalt and the bottom bar is C78200 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 110 |
| Elongation at Break, % | 17 | |
| 3.0 to 40 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 85 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 370 to 630 |
| Tensile Strength: Yield (Proof), MPa | 420 | |
| 170 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 190 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1000 |
| Melting Onset (Solidus), °C | 1330 | |
| 970 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 390 |
| Thermal Conductivity, W/m-K | 12 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 19 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 8.4 | |
| 3.3 |
| Embodied Energy, MJ/kg | 110 | |
| 52 |
| Embodied Water, L/kg | 480 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 | |
| 18 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 410 | |
| 130 to 1440 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 33 | |
| 12 to 21 |
| Strength to Weight: Bending, points | 26 | |
| 14 to 19 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 15 |
| Thermal Shock Resistance, points | 25 | |
| 12 to 21 |
Alloy Composition
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| Boron (B), % | 0 to 0.015 | |
| 0 |
| Carbon (C), % | 0.020 to 0.1 | |
| 0 |
| Chromium (Cr), % | 23.5 to 27.5 | |
| 0 |
| Cobalt (Co), % | 44.7 to 63.3 | |
| 0 |
| Copper (Cu), % | 0 | |
| 63 to 67 |
| Iron (Fe), % | 1.0 to 5.0 | |
| 0 to 0.35 |
| Lead (Pb), % | 0 | |
| 1.5 to 2.5 |
| Manganese (Mn), % | 0.1 to 1.5 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 4.0 to 6.0 | |
| 0 |
| Nickel (Ni), % | 7.0 to 11 | |
| 7.0 to 9.0 |
| Nitrogen (N), % | 0.030 to 0.12 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0.050 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 |
| Tungsten (W), % | 1.0 to 3.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 20.2 to 28.5 |
| Residuals, % | 0 | |
| 0 to 0.5 |