R30003 Cobalt vs. C34200 Brass
R30003 cobalt belongs to the cobalt alloys classification, while C34200 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 R30003 cobalt and the bottom bar is C34200 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 100 |
| Elongation at Break, % | 10 to 73 | |
| 3.0 to 17 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 83 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1720 | |
| 370 to 650 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1090 | |
| 150 to 420 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 170 |
| Melting Completion (Liquidus), °C | 1400 | |
| 910 |
| Melting Onset (Solidus), °C | 1440 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 380 |
| Thermal Conductivity, W/m-K | 13 | |
| 120 |
| Thermal Expansion, µm/m-K | 13 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 26 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 29 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 24 |
| Density, g/cm3 | 8.4 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 2.6 |
| Embodied Energy, MJ/kg | 110 | |
| 45 |
| Embodied Water, L/kg | 400 | |
| 320 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 2790 | |
| 110 to 870 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 24 | |
| 19 |
| Strength to Weight: Axial, points | 32 to 57 | |
| 13 to 22 |
| Strength to Weight: Bending, points | 26 to 38 | |
| 14 to 20 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 37 |
| Thermal Shock Resistance, points | 26 to 45 | |
| 12 to 22 |
Alloy Composition
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| Boron (B), % | 0 to 0.1 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 39 to 41 | |
| 0 |
| Copper (Cu), % | 0 | |
| 62 to 65 |
| Iron (Fe), % | 10 to 20.5 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 | |
| 1.5 to 2.5 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 |
| Molybdenum (Mo), % | 6.0 to 8.0 | |
| 0 |
| Nickel (Ni), % | 14 to 16 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 32 to 36.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |