Borosilicate Glass vs. PMP
Borosilicate glass and PMP belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while PMP is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 18 material properties with values for both materials. Properties with values for just one material (13, 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 borosilicate glass and the bottom bar is PMP.
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 67 to 80 | |
1.1 |
Tensile Strength: Ultimate (UTS), MPa | 280 | |
24 |
Thermal Properties
Maximum Temperature: Mechanical, °C | 360 | |
140 |
Melting Onset (Solidus), °C | 560 | |
230 |
Specific Heat Capacity, J/kg-K | 830 | |
1750 |
Thermal Conductivity, W/m-K | 1.2 | |
0.17 |
Thermal Expansion, µm/m-K | 3.3 to 5.1 | |
120 |
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 Hz | 4.8 to 5.5 | |
2.1 |
Dielectric Strength (Breakdown Potential), kV/mm | 5.0 to 34 | |
28 |
Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.0 to 12 | |
14 |
Otherwise Unclassified Properties
Density, g/cm3 | 2.2 to 2.6 | |
0.83 |
Refractive Index | 1.5 | |
1.5 |
Common Calculations
Stiffness to Weight: Axial, points | 15 to 17 | |
0.74 |
Stiffness to Weight: Bending, points | 55 to 61 | |
41 |
Strength to Weight: Axial, points | 30 to 35 | |
8.0 |
Strength to Weight: Bending, points | 36 to 43 | |
22 |
Thermal Diffusivity, mm2/s | 0.54 to 0.63 | |
0.12 |
Thermal Shock Resistance, points | 50 to 91 | |
13 |