R30012 Cobalt vs. C66300 Brass
R30012 cobalt belongs to the cobalt alloys classification, while C66300 brass 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 R30012 cobalt and the bottom bar is C66300 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 110 |
| Elongation at Break, % | 1.0 | |
| 2.3 to 22 |
| Poisson's Ratio | 0.28 | |
| 0.33 |
| Shear Modulus, GPa | 86 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 830 | |
| 460 to 810 |
| Tensile Strength: Yield (Proof), MPa | 650 | |
| 400 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 200 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1050 |
| Melting Onset (Solidus), °C | 1280 | |
| 1000 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 380 |
| Thermal Conductivity, W/m-K | 15 | |
| 110 |
| Thermal Expansion, µm/m-K | 12 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 25 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 26 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 8.6 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 2.8 |
| Embodied Energy, MJ/kg | 120 | |
| 46 |
| Embodied Water, L/kg | 480 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.7 | |
| 17 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 | |
| 710 to 2850 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 23 | |
| 19 |
| Strength to Weight: Axial, points | 26 | |
| 15 to 26 |
| Strength to Weight: Bending, points | 22 | |
| 15 to 22 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 32 |
| Thermal Shock Resistance, points | 23 | |
| 16 to 28 |
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 to 0.2 |
| Copper (Cu), % | 0 | |
| 84.5 to 87.5 |
| Iron (Fe), % | 0 to 3.0 | |
| 1.4 to 2.4 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 0 to 3.0 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.35 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 3.0 |
| Tungsten (W), % | 7.5 to 9.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 6.0 to 12.8 |
| Residuals, % | 0 | |
| 0 to 0.5 |