R30012 Cobalt vs. C77400 Nickel Silver
R30012 cobalt belongs to the cobalt alloys classification, while C77400 nickel silver belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is R30012 cobalt and the bottom bar is C77400 nickel silver.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 110 |
| Elongation at Break, % | 1.0 | |
| 25 |
| Poisson's Ratio | 0.28 | |
| 0.3 |
| Shear Modulus, GPa | 86 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 830 | |
| 570 |
| Tensile Strength: Yield (Proof), MPa | 650 | |
| 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 170 |
| Melting Completion (Liquidus), °C | 1470 | |
| 810 |
| Melting Onset (Solidus), °C | 1280 | |
| 770 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 390 |
| Thermal Expansion, µm/m-K | 12 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 31 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 3.5 |
| Embodied Energy, MJ/kg | 120 | |
| 57 |
| Embodied Water, L/kg | 480 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.7 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 | |
| 290 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.7 |
| Stiffness to Weight: Bending, points | 23 | |
| 20 |
| Strength to Weight: Axial, points | 26 | |
| 20 |
| Strength to Weight: Bending, points | 22 | |
| 19 |
| Thermal Shock Resistance, points | 23 | |
| 18 |
Alloy Composition
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| Carbon (C), % | 1.4 to 2.0 | |
| 0 |
| Chromium (Cr), % | 27 to 32 | |
| 0 |
| Cobalt (Co), % | 47.5 to 64.1 | |
| 0 |
| Copper (Cu), % | 0 | |
| 43 to 47 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 |
| Lead (Pb), % | 0 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 0 to 3.0 | |
| 9.0 to 11 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 |
| Tungsten (W), % | 7.5 to 9.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 41.3 to 48 |
| Residuals, % | 0 | |
| 0 to 0.5 |