GMNA 9984120 PDF

1 Scope

This specification covers the pretreatment, paint materials and some processing requirements for a waterborne, black, cathodic electrodeposition primer used on small parts. Paint durability requirements are also included. Small parts requiring low, medium and high ELPO paint film thickness applications are intended to be covered by this specification. 1.1 Material Description. This specification covers four types of primers that contain different amounts of heavy metals (chromium and lead). Type I primers contain both chromium and lead. Type II primers do not contain chromium, and Types III and IV primers do not contain chromium and lead. It is desirable to use Types III or IV primers on parts that will be welded. Pretreatment requirements will differ depending on primer used (3.2.1.1, first note). Primer Type will be identified in the comment section of MATSPC.