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Alkali-lime-silica Glass vs. Hexagonal Boron Nitride

Alkali-lime-silica glass belongs to the glass and glass-ceramics classification, while hexagonal boron nitride belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is alkali-lime-silica glass and the bottom bar is hexagonal boron nitride.

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Material Properties

Density, g/cm3 2.7
1.9 to 2.1
Dielectric Strength (Breakdown Potential), kV/mm 28
61 to 200
Elastic (Young's, Tensile) Modulus, GPa 78
14 to 60
Electrical Dissipation At 1 Hz 0.022 to 0.052
0.0017
Electrical Dissipation At 1 MHz 0.0088 to 0.053
0.00075 to 0.0018
Electrical Resistivity Order of Magnitude, 10x Ω-m 10
13 to 15
Flexural Strength, MPa 34 to 170
18 to 140
Stiffness to Weight: Axial, points 16
4.1 to 18
Stiffness to Weight: Bending, points 53
42 to 69
Thermal Expansion, µm/m-K 9.0
0.54 to 18