ASTM B631 Class C vs. Z21210 Zinc
ASTM B631 class C belongs to the otherwise unclassified metals classification, while Z21210 zinc belongs to the zinc alloys. There are 9 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is ASTM B631 class C and the bottom bar is Z21210 zinc.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 13 to 14 | |
| 7.1 |
| Electrical Conductivity: Equal Volume, % IACS | 55 to 63 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 36 to 43 | |
| 35 |
| Melting Completion (Liquidus), °C | 2090 to 2230 | |
| 420 |
| Rockwell B Hardness | 43 to 68 | |
| 45 to 58 |
| Specific Heat Capacity, J/kg-K | 180 | |
| 400 |
| Thermal Conductivity, W/m-K | 450 to 490 | |
| 110 |
| Thermal Diffusivity, mm2/s | 180 to 200 | |
| 38 |
| Thermal Expansion, µm/m-K | 14 | |
| 32 |