C70620 Copper-nickel vs. Z21210 Zinc
C70620 copper-nickel belongs to the copper alloys classification, while Z21210 zinc belongs to the zinc alloys. There are 11 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is C70620 copper-nickel and the bottom bar is Z21210 zinc.
Metric UnitsUS Customary Units
Mechanical Properties
| Rockwell B Hardness | 65 to 87 | |
| 45 to 58 |
| Tensile Strength: Ultimate (UTS), MPa | 300 to 570 | |
| 150 to 170 |
Thermal Properties
| Melting Completion (Liquidus), °C | 1120 | |
| 420 |
| Melting Onset (Solidus), °C | 1060 | |
| 420 |
| Specific Heat Capacity, J/kg-K | 390 | |
| 400 |
| Thermal Conductivity, W/m-K | 49 | |
| 110 |
| Thermal Expansion, µm/m-K | 17 | |
| 32 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.9 | |
| 7.1 |
Common Calculations
| Strength to Weight: Axial, points | 9.3 to 18 | |
| 5.7 to 6.4 |
| Strength to Weight: Bending, points | 11 to 17 | |
| 8.6 to 9.4 |
| Thermal Diffusivity, mm2/s | 14 | |
| 38 |