scope:

The materials defined by these specifications are coatings, which consist of primer surfacers over which is applied a pigmented thermoset basecoat enamel and a clear or tinted clear thermoset clearcoat in a wet-on-wet-on-wet (3 Wet) process. These materials are monobaked. Unique tricoat colors are also included in this specification. Tricoat colors consist of a pigmented basecoat followed by a non-hiding midcoat over which is applied a clear or tinted clear. Tricoat colors may be processed wet-on-wet-on-wet-on-wet application and monobaked or in a wet on bake operation.