This standard defines the requirements for a two component, chromated epoxy or polyurethane, high
corrosion resistant primer with a high degree of resistance to aggressive hydraulic fluids and improved
tolerance to the standard of surface preparation 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, process A or B or C or D 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.