GMW GMW14664 PDF

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.

This specification details the minimum performance, compatibility, and processing requirements for initial material approval of powder topcoats. Powder coatings for the purpose of this specification shall be defined as organic resin material in a finely powdered state, for application to suitably prepared ferrous or nonferrous metallic surfaces, followed by heat cure to develop the desired characteristics in the finished film. These coatings are intended to ensure adequate protection against corrosion on surfaces of both external and internal parts of passenger and commercial vehicles. To meet the requirements of this specification, it is necessary for components to undergo a suitable cleaning process/removal operation including scale or other oxide layers. Cleaning is to be followed by an appropriate pretreatment before powder coat application.

Symbols.

Not applicable.

Applicability.

Three (3) types are defined in 1.3.1 thru 1.3.3, dependent upon the severity of service operation of the component.

Type A.

Applicable to exterior body decorative parts such as roof rails, guide rails, and decorative moldings. These can be textured or smooth as required by the design studio and engineering drawing.

Type B.

Applicable to interior body, such as partition grille and brackets. The following suffixes shall be added:

• Area I: Direct sunlight, all specific colors.

• Area II: Indirect sunlight, non-color matched.

Type C.

Applicable to underhood and underbody components. The following suffixes may be added:

• UV: Limited Ultraviolet (UV) exposure grades.

• V0: Increased Flammability (V0) resistance grades.

• DES: Increased Dielectric Strength (DES) grades.

Remarks.

Not applicable.