Alumina Ceramic Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, 200T isostatic pressing and extrusion productive technology etc. Properties of Alumina/Aluminum Oxide (Al2O3) Very good electrical insulation (1x1014 to 1x1015 �©cm) Moderate to extremely high mechanical strength (300 to 630 MPa) Very high compressive strength (2,000 to 4,000 MPa) High hardness (15 to 19 GPa) Moderate thermal conductivity (20 to 30 W/mK) High corrosion and wear resistance Good gliding properties Low density (3.75 to 3.95 g/cm3) Operating temperature without mechanical load 1,000 to 1,500°C. Advantages Application Excellent mechanical strength Power semiconductor modules Excellent electrical insulation Concentrator Photovoltaic Arrays (CPV)solar arrays High thermal stability solid-state relays High thermal conductivity High frequncy switch mode power supplies(SMPS) The thermal expansion coefficient is close to that of silicon Electronic heating devices may be structured just like printed circuit boards Automobile electronics Power LED module Electronic heating devices DBC substrate are composed of a ceramic insulator,Al2O3 or AIN onto which pure copper metal is attached by a high temperature eutectic melting process and thus tightly and firmly joined to the ceramic, DBC substrates have high thermal conductivity,excellent electrical insulation,excellent current carrying capability, and good mechanical strength,and the thermal expansion coefficient is close to that of silicon etc.As a new and high capability substrate.DBC substrates have been used widely in electric power and electronic industry.