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Steatite vs. High-silica Glass

Steatite belongs to the oxide-based engineering ceramics classification, while high-silica glass belongs to the glass and glass-ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68 to 120
78
Flexural Strength, MPa 32 to 150
34

Thermal Properties

Thermal Expansion, µm/m-K 7.0 to 9.0
0.6 to 0.75

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 6.0
3.8
Dielectric Strength (Breakdown Potential), kV/mm 7.9 to 16
34
Electrical Dissipation At 1 Hz 0.0014 to 0.022
0.00044 to 0.00087
Electrical Dissipation At 1 MHz 0.0010 to 0.0060
0.00044 to 0.00088
Electrical Resistivity Order of Magnitude, 10x Ω-m 8.0 to 11
12

Otherwise Unclassified Properties

Density, g/cm3 1.9 to 2.8
2.4

Common Calculations

Stiffness to Weight: Axial, points 14 to 32
19
Stiffness to Weight: Bending, points 52 to 83
61