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Description / Abstract:
This specification describes the General Motors approval process
for decorative chrome plating. The plater must obtain an approval
for each substrate material, chemical source, finish, and facility
combination. Note: Nothing in this standard supercedes applicable
laws and regulations.
Material Description. The entire Class A part
surface is to meet all requirements.
Symbols. Not applicable.
Applicability. Chrome plated exterior and
interior applications.
Remarks. Finish suppliers (platers) should be
approved before Tier 1 sourcing. The Tier 1 should select approved
platers from their respective regions, otherwise contact GM
Materials Engineering prior to finalizing plating source
selection.
If a new plater is to be developed, the Tier 1 is responsible
for (a) determining the plater's ability to meet all preproduction
part submission dates utilizing production processes, (b)
consulting with GM Materials Engineering, and (c) ensuring that the
plater is approved before Integration Vehicle Engineering Release,
typically Start of Production (SOP) – week 74. The Tier 1 should
identify an approved backup plating source in these cases. Once a
plater has successfully completed the approval process, their
approval record (trim transmittal) will be available on the GM
Supply Power web site. The trim transmittal will support the Tier 1
- GM Production Part Approval Process (PPAP).
One approval may be applicable for future parts with the same
combination. Any substrate, solution chemistry, supplier, process,
or facility change is subject to re-qualification (including a new
trim transmittal).
Note: An approval is based on single part geometry. Subsequent
parts must be tested to meet GM PPAP requirements (GM Materials
Engineering reserves the right to require an additional approval if
part complexity warrants).