This standard specifies the requirements for a two component, cold curing, chromate-free epoxy or polyurethane, high corrosion resistant primer which can be used with or without a finish for aerospace applications.The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 and ISO 3270. The ability of the material to be used for a specific application (e.g. alternative substrate, alternative primer, specific drying conditions etc.) shall be determined by supplementary tests to confirm that the requirements of this standard are met.