Soda-lime Glass vs. Forsterite

Soda-lime glass belongs to the glass and glass-ceramics classification, while forsterite belongs to the oxide-based engineering ceramics. There are 7 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

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

Soda-Lime (Float) Glass Forsterite (Mg₂SiO₄)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.4
Density, g/cm³		2.1 to 3.1

Dielectric Constant (Relative Permittivity) At 1 MHz		7.3 to 7.4
Dielectric Constant (Relative Permittivity) At 1 MHz		6.2

Dielectric Strength (Breakdown Potential), kV/mm		13
Dielectric Strength (Breakdown Potential), kV/mm		7.9

Specific Heat Capacity, J/kg-K		720 to 800
Specific Heat Capacity, J/kg-K		850

Thermal Conductivity, W/m-K		1.0 to 1.1
Thermal Conductivity, W/m-K		1.7 to 3.5

Thermal Diffusivity, mm²/s		0.51 to 0.6
Thermal Diffusivity, mm²/s		0.94 to 1.3

Thermal Expansion, µm/m-K		8.8 to 9.0
Thermal Expansion, µm/m-K		9.0 to 10

Soda-lime Glass vs. Forsterite

Material Properties

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