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Description / Abstract:
This specification details the general materials performance,
compatibility, and processing information requirements for
international company approval of electrodeposition (ELPO, E-Coat,
electrocoat) primers.
Material Description. Materials qualified to
this standard shall meet the performance requirements shown in
Table A2. Additional testing and any exceptions to the requirements
detailed herein are noted in the Appendix. Suppliers must
demonstrate the technology as being production capable to reduce
undue risk prior to release in a production facility. Any material
development issues, such as chemical or performance values that
fall outside of specified ranges, must be discussed with the
appropriate ELPO engineer for resolution. Material must
successfully complete a production trial in a target facility prior
to release for other facilities. Plant-specific tests must be
performed after generic approval is received. An example of items
evaluated in plant-specific testing includes GM sealers and sealing
compounds.
Typical Applications. This specification
applies to medium, high-build and Hyper-throw materials for use on
vehicles and space frames. These primers are intended to provide
corrosion and chip resistance and may or may not be intended for
subsequent coating for appearance purposes. These coatings must
perform over bare Cold Rolled Steel (CRS), Electrogalvanized (EG)
coated steel, Hot Dip Galvanized coated steel (HDG), Galvannealed
(Zinc-Iron Alloy (ZnFe)) and Aluminum substrates (Al).