Hexcel® HexWeb® HRH-49 - 1/4 - 2.1 Woven Kevlar Honeycomb

Designation: Material-Cell Size (inches)-DensityHexWeb® HRH-49 is manufactured using KEVLAR® 49 fabric. A thermosetting adhesive is used for the node bonds and a 350°F cure modified epoxy resin is applied for initial and final impregnations. The standard cell size is 1/4 inch. Due to the low resin content of HexWeb® HRH-49, core movement may occur during handling and part curing if proper restraining techniques are not employed.Features: Lightweight; Excellent thermal stability; Very low coefficient of thermal expansion; Good flatwise tensile strength; Excellent dielectric properties.Applications: HexWeb® HRH-49 has been developed by Hexcel for use as a sandwich core material in radomes and antennas. When used with KEVLAR® 49 or graphite facings, the HexWeb® HRH-49 sandwich has been considered to have good thermal stability when exposed to cyclic heat exposures such as encountered in space applications.