BNH insulate ceramic is white solid material formed by hot press with high purity of platy hexagonal boron nitride powder. BNH ceramic is electrical resistance same with platy hBN. It is a low porosity solid and easily machined into complex shapes parts using standard carbide tooling. We supply customized precision machined parts as your requirements.Features ◆High thermal conductivity ◆Low thermal expansion ◆Good thermal shock resistance ◆High electrical resistance ◆Low dielectric constant and loss tangent ◆Microwave transparency ◆Easily machinedPurity>99% Density g/cm31.9±0.5Max operating Temperature850℃ in atmosphere2200℃ in inert gas2000℃ in vacuumHardness20flexural strength3000PsiHeat conductivity63W/mkcoefficient thermal expansion0.6(x10-6/K) RT-1500℃volume resistance1015(Ωcm)ColorWhiteMaximum size    ø320mm,H400mm.SINYO is one of the leading and professional customized pure white high purity boron nitride ceramic block plate bush tube for electric insulate manufacturers in China. Providing you with good after-sales service and quick delivery, we warmly welcome you to high quality and non-toxic boron nitride products at the most competitive price with us.