R30021 Cobalt vs. C99600 Bronze
R30021 cobalt belongs to the cobalt alloys classification, while C99600 bronze belongs to the copper alloys. There are 22 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 R30021 cobalt and the bottom bar is C99600 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 150 |
| Elongation at Break, % | 9.0 | |
| 27 to 34 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 86 | |
| 56 |
| Tensile Strength: Ultimate (UTS), MPa | 700 | |
| 560 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 250 to 300 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 240 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1100 |
| Melting Onset (Solidus), °C | 1190 | |
| 1050 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 440 |
| Thermal Expansion, µm/m-K | 11 | |
| 19 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 3.2 |
| Embodied Energy, MJ/kg | 110 | |
| 51 |
| Embodied Water, L/kg | 520 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 | |
| 130 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 | |
| 210 to 310 |
| Stiffness to Weight: Axial, points | 15 | |
| 10 |
| Stiffness to Weight: Bending, points | 24 | |
| 22 |
| Strength to Weight: Axial, points | 23 | |
| 19 |
| Strength to Weight: Bending, points | 21 | |
| 19 |
| Thermal Shock Resistance, points | 21 | |
| 14 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 1.0 to 2.8 |
| Carbon (C), % | 0.2 to 0.35 | |
| 0 to 0.050 |
| Chromium (Cr), % | 26 to 29 | |
| 0 |
| Cobalt (Co), % | 61.7 to 67.3 | |
| 0 to 0.2 |
| Copper (Cu), % | 0 | |
| 50.8 to 60 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Manganese (Mn), % | 0 | |
| 39 to 45 |
| Molybdenum (Mo), % | 4.5 to 6.0 | |
| 0 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 to 0.2 |
| Silicon (Si), % | 0 to 1.5 | |
| 0 to 0.1 |
| Tin (Sn), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |