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Lead-alkali-silica Glass vs. Fused Silica

Both lead-alkali-silica glass and fused silica are glass and glass-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 lead-alkali-silica glass and the bottom bar is fused silica.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.1
2.2
Elastic (Young's, Tensile) Modulus, GPa 67
73
Electrical Dissipation At 1 MHz 0.0018
0.00011
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
14
Flexural Strength, MPa 34
67
Stiffness to Weight: Axial, points 12
18
Stiffness to Weight: Bending, points 43
63
Thermal Expansion, µm/m-K 9.0
0.5