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Silicon Nitride vs. Alumina-lime-silica Glass

Silicon nitride belongs to the non-oxide engineering ceramics classification, while alumina-lime-silica glass belongs to the glass and glass-ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is silicon nitride and the bottom bar is alumina-lime-silica glass.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.2 to 3.4
2.8
Dielectric Strength (Breakdown Potential), kV/mm 18
34
Elastic (Young's, Tensile) Modulus, GPa 140 to 310
90
Electrical Resistivity Order of Magnitude, 10x Ω-m 11 to 12
12
Flexural Strength, MPa 130 to 810
46
Stiffness to Weight: Axial, points 34 to 53
18
Stiffness to Weight: Bending, points 65 to 78
53
Thermal Expansion, µm/m-K 2.5 to 3.2
4.3