Soda-lime Glass vs. Gallium Arsenide
Soda-lime glass belongs to the glass and glass-ceramics classification, while gallium arsenide belongs to the non-glass optical ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is soda-lime glass and the bottom bar is gallium arsenide.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 70 to 71 | |
85 |
Knoop Hardness | 570 | |
750 |
Poisson's Ratio | 0.23 | |
0.31 |
Thermal Properties
Specific Heat Capacity, J/kg-K | 720 to 800 | |
360 |
Thermal Conductivity, W/m-K | 1.0 to 1.1 | |
47 |
Thermal Expansion, µm/m-K | 8.8 to 9.0 | |
5.6 |
Otherwise Unclassified Properties
Density, g/cm3 | 2.4 | |
5.3 |
Light Transmission Range, µm | 0.35 to 2.5 | |
1.0 to 16 |
Refractive Index | 1.5 | |
3.4 |
Common Calculations
Stiffness to Weight: Axial, points | 16 | |
8.9 |
Stiffness to Weight: Bending, points | 56 | |
28 |
Thermal Diffusivity, mm2/s | 0.51 to 0.6 | |
25 |