Limestone vs. High-alumina Refractory

Limestone belongs to the natural stone classification, while high-alumina refractory belongs to the oxide-based engineering ceramics. There are 6 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 limestone and the bottom bar is high-alumina refractory.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.6
Density, g/cm³		2.1

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

Specific Heat Capacity, J/kg-K		920
Specific Heat Capacity, J/kg-K		800

Thermal Conductivity, W/m-K		2.1
Thermal Conductivity, W/m-K		1.5

Thermal Diffusivity, mm²/s		0.88
Thermal Diffusivity, mm²/s		0.87

Thermal Expansion, µm/m-K		8.0
Thermal Expansion, µm/m-K		4.3

Limestone vs. High-alumina Refractory

Material Properties

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