Alumina Ceramic Products

Alumina Ceramic Products

Aluminium Oxide (Alumina) is the most widely used ceramic material with near limitless manufacturing capabilities. They are grouped together based on purity levels, as the purity of Alumina’s increases wear and corrosion resistance also increases. LSP Industrial Ceramics stocks more alumina ceramic tubes than any other supplier. Our vast, readily-available inventory allows us to supply our customer’s ceramic tube needs immediately, even for hard-to-find or specialty products. Alumina’s are used in a variety of general-purpose applications, and their grade is chosen based on the application environment. Higher purity Alumina’s can be formulated for more demanding applications. Typical Applications Include: Wear resistant components, High pressure nozzles, Thermocouple tubes,  Electrical Insulators, Corrosive labware, Furnace fixtures, Ballistic armor, Thread guides, Laser Tubes, and Pump seals.

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Density, ρg/cm33.7-3.97
Water Absorption% @ room temperature (R.T.)0
Hardness Mohs 9Mohs9
HardnessKnoop (kg/mm2)2000
Compressive StrengthMPa @ R.T.2070-2620
Tensile StrengthMPa @ R.T.260-300
Fracture Toughness, KicMPa x m1/24.5
Max. Use Temperature (in air)ºC1750
Thermal Shock Resistance∆T (ºC)200
Thermal ConductivityW/m-K @ R.T.35
Coefficient of Linear Thermal Expansion, αlµm/m-ºC  (~25ºC through ±1000ºC)8.4
Dielectric Constant1 MHz @ R.T.9.6
Dielectric StrengthkV/mm

15