scope:

The materials defined by this specification are coatings which consist of a pigmented waterborne thermoset basecoat enamel over which is applied a clear or tinted clear thermoset clearcoat in a wet-on-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 application and monobaked or in a wet on bake operation. WSS-M33J6-A1/C4 replaces WSB-M33J5-A1/B3.