GMW 14668:2021

GMW 14668:2021

Minimum Performance Requirements for Decorative Chromium Plated Plastic Parts

46,00 €

Détails

This standard is intended for the following applications:



Interior (Code A).



Interior applications do not require the use of discontinuous chromium or multiple layer nickel systems. For interior applications, non-discontinuous chrome (r) is permissible.



• Type 1: Standard interior usage.



• Type 2: Applications where higher coating thicknesses are required and/or performance requirements are not met with Type 1 (e.g., inside door handles, manual shifter decor rings, or bezels, may require Type 2).



• Type 3: Small parts such as radio control knob bezels. These parts do not require full plating approval per GMW16193, but only require demonstration of plating performance per this specification at Production Part Approval Process (PPAP). Refer to Appendix B, Figure B3, for geometry limitations.



Note: If no interior type is listed on the detail drawing, Type 1 is assumed.



Exterior (Code B).



For exterior applications, discontinuous chromium plate (microporous (mp) or microcracking (mc)), in addition to a multiple layer nickel system, shall be used.



• Type 1: Legacy type (not used for new programs/approvals).



• Type 2: Standard exterior usage.



• Type 3: High corrosion service conditions (wheel claddings and caps).



• Type 4: High corrosion calcium chloride resistant chromium (Russian mud, see 3.4.10.2).

Informations supplémentaires

Auteur General Motors Worldwide (GMW)
Edité par GM
Type de document Norme
Edition révision n° 9
ICS 43 : Véhicules routiers
Nombre de pages 20
Remplace GMW 14668:2020