Borosilicate Glass vs. High-alumina Refractory

Borosilicate glass belongs to the glass and glass-ceramics classification, while high-alumina refractory belongs to the oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.

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

Borosilicate Glass High-Alumina Refractory (IEC 60672 Type C-510)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.2 to 2.6
Density, g/cm³		2.1

Flexural Strength, MPa		34 to 69
Flexural Strength, MPa		28

Maximum Temperature: Mechanical, °C		360
Maximum Temperature: Mechanical, °C		1200

Maximum Thermal Shock, °C		160
Maximum Thermal Shock, °C		210

Specific Heat Capacity, J/kg-K		830
Specific Heat Capacity, J/kg-K		800

Thermal Conductivity, W/m-K		1.2
Thermal Conductivity, W/m-K		1.5

Thermal Diffusivity, mm²/s		0.54 to 0.63
Thermal Diffusivity, mm²/s		0.87

Thermal Expansion, µm/m-K		3.3 to 5.1
Thermal Expansion, µm/m-K		4.3

Borosilicate Glass vs. High-alumina Refractory

Material Properties

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