C74000 Nickel Silver vs. R30012 Cobalt
C74000 nickel silver belongs to the copper alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 20 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 C74000 nickel silver and the bottom bar is R30012 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 220 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 44 | |
| 86 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 590 | |
| 830 |
Thermal Properties
| Latent Heat of Fusion, J/g | 200 | |
| 320 |
| Melting Completion (Liquidus), °C | 990 | |
| 1470 |
| Melting Onset (Solidus), °C | 950 | |
| 1280 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 440 |
| Thermal Expansion, µm/m-K | 18 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 40 | |
| 1.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 42 | |
| 1.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.5 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 8.3 |
| Embodied Energy, MJ/kg | 54 | |
| 120 |
| Embodied Water, L/kg | 310 | |
| 480 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.7 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 23 |
| Strength to Weight: Axial, points | 13 to 19 | |
| 26 |
| Strength to Weight: Bending, points | 14 to 18 | |
| 22 |
| Thermal Shock Resistance, points | 13 to 19 | |
| 23 |
Alloy Composition
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| Carbon (C), % | 0 | |
| 1.4 to 2.0 |
| Chromium (Cr), % | 0 | |
| 27 to 32 |
| Cobalt (Co), % | 0 | |
| 47.5 to 64.1 |
| Copper (Cu), % | 69 to 73.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 0 to 3.0 |
| Lead (Pb), % | 0 to 0.1 | |
| 0 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 9.0 to 11 | |
| 0 to 3.0 |
| Silicon (Si), % | 0 | |
| 0 to 2.0 |
| Tungsten (W), % | 0 | |
| 7.5 to 9.5 |
| Zinc (Zn), % | 14.2 to 22 | |
| 0 |
| Residuals, % | 0 to 0.5 | |
| 0 |