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Soda-lime Glass vs. Aluminum Nitride

Soda-lime glass belongs to the glass and glass-ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is soda-lime glass and the bottom bar is aluminum nitride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70 to 71
330
Knoop Hardness 570
1160
Poisson's Ratio 0.23
0.21 to 0.31

Thermal Properties

Maximum Temperature: Mechanical, °C 300
1380
Specific Heat Capacity, J/kg-K 720 to 800
780
Thermal Conductivity, W/m-K 1.0 to 1.1
80 to 190
Thermal Expansion, µm/m-K 8.8 to 9.0
4.2 to 5.4

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 7.3 to 7.4
6.9 to 28
Dielectric Strength (Breakdown Potential), kV/mm 13
15 to 56

Otherwise Unclassified Properties

Density, g/cm3 2.4
2.9 to 3.3

Common Calculations

Stiffness to Weight: Axial, points 16
55 to 63
Stiffness to Weight: Bending, points 56
69 to 80
Thermal Diffusivity, mm2/s 0.51 to 0.6
31 to 74