CASCELL® HF- Low Dielectric Foam 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. Compressive creep testing conditions: Cascell® 50HF, 130℃/0.3MPa/2h Cascell® 75HF, 150℃/0.3MPa/2h Note: Technical data of our products are typical values for the nominal density.