R30008 Cobalt vs. C82200 Copper
R30008 cobalt belongs to the cobalt alloys classification, while C82200 copper belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is R30008 cobalt and the bottom bar is C82200 copper.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 120 |
| Elongation at Break, % | 1.1 to 73 | |
| 8.0 to 20 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 83 | |
| 44 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 390 to 660 |
| Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
| 210 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 220 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1080 |
| Melting Onset (Solidus), °C | 1330 | |
| 1040 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 390 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 55 |
| Density, g/cm3 | 8.4 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 4.8 |
| Embodied Energy, MJ/kg | 110 | |
| 74 |
| Embodied Water, L/kg | 400 | |
| 310 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
| 180 to 1130 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.4 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 12 to 20 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 13 to 19 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 14 to 23 |
Alloy Composition
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| Beryllium (Be), % | 0 | |
| 0.35 to 0.8 |
| Boron (B), % | 0 to 0.0010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 |
| Chromium (Cr), % | 18.5 to 21.5 | |
| 0 |
| Cobalt (Co), % | 39 to 42 | |
| 0 to 0.3 |
| Copper (Cu), % | 0 | |
| 97.4 to 98.7 |
| Iron (Fe), % | 7.6 to 20 | |
| 0 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 6.5 to 7.5 | |
| 0 |
| Nickel (Ni), % | 15 to 18 | |
| 1.0 to 2.0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.5 |