This specification covers the qualification and performance requirements of a thermosetting, sandable, high solids, solvent-borne primer surfacer.

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

The primer surfacer covered in this specification is intended to be applied and baked over electrodeposition (ELPO, E-Coat, Electrocoat) primer prior to topcoat. The nominal bake for this system is 25 minutes at 129 °C (265 °F) substrate temperature.

Symbols.

Not applicable.

Applicability.

The primer surfacer is intended to provide a smooth, adhesion promoting coating over baked electrodeposition primer. It is also intended to provide an easily sanded surface.

Remarks.

The primer surfacer is typically applied by electrostatic spraying and is subsequently topcoated with solventborne or waterborne (WB) basecoat (BC) clearcoat (CC) topcoat systems approved to GMW3005.