R30816 Cobalt vs. Z21210 Zinc
R30816 cobalt belongs to the cobalt alloys classification, while Z21210 zinc belongs to the zinc alloys. There are 10 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.
For each property being compared, the top bar is R30816 cobalt and the bottom bar is Z21210 zinc.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 9.1 | |
| 7.1 |
| Melting Completion (Liquidus), °C | 1540 | |
| 420 |
| Melting Onset (Solidus), °C | 1460 | |
| 420 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 400 |
| Strength to Weight: Axial, points | 31 | |
| 5.7 to 6.4 |
| Strength to Weight: Bending, points | 25 | |
| 8.6 to 9.4 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 150 to 170 |
| Thermal Conductivity, W/m-K | 13 | |
| 110 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 38 |
| Thermal Expansion, µm/m-K | 12 | |
| 32 |