SiAlON vs. High-alumina Refractory

SiAlON belongs to the non-oxide engineering 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 (15, in this case) are not shown.

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

SiAlON High-Alumina Refractory (IEC 60672 Type C-510)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		3.3
Density, g/cm³		2.1

Flexural Strength, MPa		680
Flexural Strength, MPa		28

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

Maximum Thermal Shock, °C		300
Maximum Thermal Shock, °C		210

Specific Heat Capacity, J/kg-K		880
Specific Heat Capacity, J/kg-K		800

Thermal Conductivity, W/m-K		19
Thermal Conductivity, W/m-K		1.5

Thermal Diffusivity, mm²/s		6.4
Thermal Diffusivity, mm²/s		0.87

Thermal Expansion, µm/m-K		3.6
Thermal Expansion, µm/m-K		4.3

SiAlON vs. High-alumina Refractory

Material Properties

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