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Machinable Glass-ceramic vs. High-alumina Refractory

Machinable glass-ceramic belongs to the glass and glass-ceramics classification, while high-alumina refractory belongs to the oxide-based engineering ceramics. There are 7 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is machinable glass-ceramic and the bottom bar is high-alumina refractory.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7
2.1
Flexural Strength, MPa 96
28
Maximum Temperature: Mechanical, °C 760
1200
Specific Heat Capacity, J/kg-K 790
800
Thermal Conductivity, W/m-K 1.2
1.5
Thermal Diffusivity, mm2/s 0.56
0.87
Thermal Expansion, µm/m-K 21
4.3