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
Density
2.1 g/cm3 130 lb/ft3
Flexural Strength
28 MPa 4.1 x 103 psi
Common Calculations
Thermal Diffusivity
0.87 mm2/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