Zamak 2 vs. Gallium Arsenide
Zamak 2 and gallium arsenide belong to fundamentally different material chemistries. Zamak 2 is a metal, while gallium arsenide is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (26, in this case) are not shown.
For each property being compared, the top bar is Zamak 2 and the bottom bar is gallium arsenide.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 87 | |
| 85 |
| Knoop Hardness | 130 | |
| 750 |
| Poisson's Ratio | 0.26 | |
| 0.31 |
Thermal Properties
| Melting Onset (Solidus), °C | 380 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 360 |
| Thermal Conductivity, W/m-K | 110 | |
| 47 |
| Thermal Expansion, µm/m-K | 28 | |
| 5.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.5 | |
| 5.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 7.5 | |
| 8.9 |
| Stiffness to Weight: Bending, points | 23 | |
| 28 |
| Thermal Diffusivity, mm2/s | 41 | |
| 25 |