Zinc Phosphate - Generic Qualifications
|Publication Date:||1 August 2019|
This specification details the general material performance, paint layering compatibility, and processing requirements for GM worldwide approval of zinc phosphate conversion coatings.
Materials qualified to this standard shall meet the performance shown in Appendix A, Table A1. Any material development issues, such as chemical or performance values that fall outside specified ranges, must be discussed with the appropriate GM Materials Engineer for resolution. Material must successfully complete a production trial in a target facility prior to release for general use.
This specification applies to zinc phosphate conversion coating materials that are intended for use on automotive vehicles and associated components. These coatings must provide a crystalline, corrosion-resistant,