Alumina Ceramic – 96% Dense Aluminum Oxide

Alumina Ceramics have excellent electrical, wear resistant, and high temperature properties.  Our Alumina ceramic products also exhibit excellent mechanical strength, and can operate at safe operating temperatures up to 1550 C.  Typical applications of alumina ceramics include, but are not limited to, electrical heating elements, fuses, igniters, resistors, stand offs, ceramic thermocouple cores, load banks, ovens, furnaces, connectors, ceramic knife sharpeners, ceramic substrates, heat sinks, sensors and ceramic spacers

Mechanical, Electrical, Thermal and Physical Properties

Material Grade96% Alumina Oxide
Physical Properties
Water Absorption (%)impervious:0.00
Density (g/cc)3.7
ColorWhite
Mechanical Properties
Flexural Strength (1K PSI)60
Compressive Strength (1K PSI)400
Tensile Strength (1K PSI)25
Hardness (Moh’s Scale)9
Impact Resistance (Inch-Lbs.)7
Electrical Properties
Dielectric Strength (Volts/Mil)230
Dielectric Constant (@1MHz)9.3
Volume Resistivity 25 C (ohms-cm)>1E14
Loss Index (@1MHz)0.0028
Thermal Properties
C.O.T.E. (20-650 C)7.9 x 10-6
Safe Operating Temperature (C)1550
Thermal Conductivity (W/m-C)18
  
Note: This information is for design guidance only.  Du-Co will not guarantee this information as absolute values.  Various geometries can affect properties