MakeItFrom.com
Menu (ESC)

Alumina-lime-silica Glass vs. Synthetic Sapphire

Alumina-lime-silica glass belongs to the glass and glass-ceramics classification, while synthetic sapphire belongs to the oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.8
4.0
Dielectric Strength (Breakdown Potential), kV/mm 34
9.9
Elastic (Young's, Tensile) Modulus, GPa 90
450
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
17
Flexural Strength, MPa 46
1090
Stiffness to Weight: Axial, points 18
63
Stiffness to Weight: Bending, points 53
64
Thermal Expansion, µm/m-K 4.3
5.3