Borosilicate Glass vs. Aluminum Nitride
Borosilicate glass belongs to the glass and glass-ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is borosilicate glass and the bottom bar is aluminum nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 2000 | |
| 2100 |
| Elastic (Young's, Tensile) Modulus, GPa | 67 to 80 | |
| 330 |
| Flexural Strength, MPa | 34 to 69 | |
| 190 to 400 |
| Fracture Toughness, MPa-m1/2 | 0.8 | |
| 2.9 |
| Knoop Hardness | 510 | |
| 1160 |
| Poisson's Ratio | 0.21 | |
| 0.21 to 0.31 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 360 | |
| 1380 |
| Maximum Thermal Shock, °C | 160 | |
| 220 |
| Specific Heat Capacity, J/kg-K | 830 | |
| 780 |
| Thermal Conductivity, W/m-K | 1.2 | |
| 80 to 190 |
| Thermal Expansion, µm/m-K | 3.3 to 5.1 | |
| 4.2 to 5.4 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 5.4 | |
| 6.9 to 28 |
| Dielectric Strength (Breakdown Potential), kV/mm | 5.0 to 34 | |
| 15 to 56 |
| Electrical Dissipation At 1 Hz | 0.0026 to 0.018 | |
| 0.0019 |
| Electrical Dissipation At 1 MHz | 0.0017 to 0.0088 | |
| 0.00020 to 0.0010 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.0 to 12 | |
| 10 to 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.2 to 2.6 | |
| 2.9 to 3.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 17 | |
| 55 to 63 |
| Stiffness to Weight: Bending, points | 55 to 61 | |
| 69 to 80 |
| Thermal Diffusivity, mm2/s | 0.54 to 0.63 | |
| 31 to 74 |