scope:

This specification details the minimum performance, compatibility, and processing requirements for international approval of all exterior topcoats.

Material Description. Materials qualified to this standard shall meet the performance requirements shown in Appendix A for the specific topcoat type. Appendix A summarizes all requirements for material technology approval. Additional testing or any exceptions to the requirements may be directed by the GM approving engineer. Suppliers must demonstrate that the material technology is production capable via successful trial completion in an agreed upon paint facility prior to use for GM production parts or vehicles. Any material development performance issues or values that fall outside specified ranges must be discussed with the responsible topcoat materials engineer for resolution.

Note: Line trials may begin after two years of Florida exposure.

Typical Applications. This specification applies to all exterior topcoats for use on vehicles or parts supplied to GM. Topcoats and their performance levels are defined by classes and types.

Remarks. The topcoat type defines the requirements for test panel preparation, basic testing, compatibility testing, and processability for use in a specific application.