High-silica Glass vs. GM-120 Glass Ceramic

Both high-silica glass and GM-120 glass ceramic are glass and glass-ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is high-silica glass and the bottom bar is GM-120 glass ceramic.

High-Silica Glass Mica-Containing Glass-Ceramic (IEC 60672 Type GM-120)

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Material Properties

Density, g/cm³		2.4
Density, g/cm³		2.5

Dielectric Strength (Breakdown Potential), kV/mm		34
Dielectric Strength (Breakdown Potential), kV/mm		11

Elastic (Young's, Tensile) Modulus, GPa		78
Elastic (Young's, Tensile) Modulus, GPa		56

Electrical Resistivity Order of Magnitude, 10^x Ω-m		12
Electrical Resistivity Order of Magnitude, 10^x Ω-m		10

Flexural Strength, MPa		34
Flexural Strength, MPa		57

Stiffness to Weight: Axial, points		19
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		61
Stiffness to Weight: Bending, points		52

Thermal Expansion, µm/m-K		0.6 to 0.75
Thermal Expansion, µm/m-K		9.5

High-silica Glass vs. GM-120 Glass Ceramic

Material Properties

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