FormThis specification covers an aluminum alloy in the form of honeycomb core in a non-hexagonal@ flexible cell configuration@ the core being treated for increased corrosion resistance and furnished only in the expanded form.ApplicationThis honeycomb core has been used typically in contoured sandwich construction for short-term exposure up to 350 ??(177 ?? or for long-term exposure up to 200 ??(93 ??@ but usage is not limited to such applications.Safety - Hazardous MaterialsWhile the materials@ methods@ applications@ and processes described or referenced in this specification may involve the use of hazardous materials@ this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.