Home Products Composites | Compounds | Ceramics Beryllium Oxide Ceramics Dry Pressed DRY PRESSED BERYLLIA Beryllia ceramics convey an exceptional combination of properties: Second only to Diamond among electrical insulating materials, premium BeO ceramics provide an exceptionally high thermal conductivity ranging from 275 to 325 W/m•K at room temperature. Low Dielectric Constant (6.7) and low tanδ dielectric loss tangent (.0004 at 1 MHz), permitting improved circuit performance at high frequencies. A Coefficient of Thermal Expansion (CTE) of 9 ppm intermediate to silicon or gallium arsenide and metals. Ten times greater thermal conductivity than alumina ceramics. We carry a variety of standard plate and substrate sizes to meet your high performance application demands efficiently. Our offerings include: Dry Pressed Beryllium Oxide Ceramics Standard Sizes: Available in a variety of Thicknesses 2.062" square 2.25" square 2.9" x 2.3" 3.7" square 4.5" square Dry Pressed Materials Shapes: Plates Discs Washers TO packages Heatsinks Contact Materion Ceramics To learn more about dry pressed beryllium oxide ceramics, contact Materion Ceramics.