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

High-alumina refractory is an oxide-based engineering ceramic. It has a fairly low density among oxide-based engineering ceramics. In addition, it has a fairly low thermal conductivity and a moderately low heat capacity.

The graph bars on the material properties cards below compare high-alumina refractory to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Thermal Properties

Maximum Temperature: Mechanical

1200 °C 2190 °F

Maximum Thermal Shock

210 °C 410 °F

Specific Heat Capacity

800 J/kg-K 0.19 BTU/lb-°F

Thermal Conductivity

1.5 W/m-K 0.84 BTU/h-ft-°F

Thermal Expansion

4.3 µm/m-K

Other Material Properties


2.1 g/cm3 130 lb/ft3

Flexural Strength

28 MPa 4.1 x 103 psi

Common Calculations

Thermal Diffusivity

0.87 m2/s

Followup Questions

Further Reading

Alumina as a Ceramic Material, Walter H. Gitzen (editor), 1997

Ceramic and Glass Materials: Structure, Properties and Processing, James F. Shackelford and Robert H. Doremus (editors), 2008

IEC 60672-3: Ceramic and glass-insulating materials - Part 3: Specifications for individual materials

Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005