This specification covers expanded honeycomb core made from glass fabric impregnated with phenolic resin and oriented so that the fabric weave is on the 45-degree bias with the ribbon direction and supplied in the form of blocks, slices, and ordered shapes. These products have been typically used for bonded sandwich structures requiring high strength and corrosion resistance for service up to 177 degrees C (350 degrees F), but usage is not limited to such applications. Each application should be considered individually.
SAE AMS3716C-1998 Referenced Document
SAE AMS3698 ADHESIVE FILM, HOT-MELT, ADDITION-TYPE POLYIMIDE For Foam Sandwich Structure, -55° to +230°C (-67° to +450°F)