SAE AMS3712C

This specification covers expanded honeycomb core made of glass cloth impregnated with polyimide resin and supplied in the form of blocks, slices, and ordered shapes.

This core has been used typically for bonded sandwich structures requiring high strength and corrosion resistance for long-term service up to 450 °F (232 °C) and short duration up to 700 °F (371 °C), but usage is not limited to such applications.