Item Type: Alumina Ceramic Sheet Material: Alumina Color: White Thermal Conductivity: 28W/m.k Insulation Performance: 15kv/mm Size: Approx. 17 x 22 x 1mm / 0.67 x 0.87 x 0.04in Hole Size: Approx. 3.7mm / 0.1in Quantity: 100pcs 1Alumina ceramic sheet is a special ceramic sheet made of AL, O, ZrO2 as the main raw material, rare metal oxide as flux and calcined by more than one thousand degrees. 2With high melting point, high hardness and excellent wear resistance. 3The hardness of ceramic patch is second only to the hardness of diamond, and the surface is smooth and frictionless. 4Ceramic paste materials are superior to other metal materials in high temperature oxidizing or corrosive media. 5Commonly used in coal mining, conveying systems, milling systems, dust removal systems, etc. for thermal power, steel, smelting, machinery, coal, mining, chemical, cement, port and other enterprises. 6Suitable for high power equipment, ICMOS tube, IGBT patch insulation, high frequency power supply communication, mechanical equipment, high current, high voltage, high temperature, insulation parts requiring heat conduction. 728W/m.k thermal conductivity, good thermal conductivity. 815kv/mm insulation performance, high resistance to electrical insulation, safer to use. 9 Alumina material, high hardness, high melting point, wear resistant.100 x Alumina Ceramic Sheet