Cascell? HF foam core has been specifically designed for antenna application, due to its extremely low dielectric constants and particularly favorable transmission properties. It can also be used as structural core for radomes and mammography plates. CONTACT US DETAILS Processing and production With an extremely fine closed-cell structure, the foam has minimal resin uptake and problem-free compatibility with metallic facing materials due to the absence of corrosive effects. https://www.pmifoam.com/product/