GMW17698

GMW17698 1st Edition, November 2016 Electrodeposition Primer for Purchased Parts

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Description / Abstract: GMW17698, 1st Edition, November 2016 - Electrodeposition Primer for Purchased Parts

This specification details the general materials performance, compatibility, and processing requirements for approval of electrodeposition (ELPO, E-Coat (electrocoat)) primers for purchased parts.

Material Description. The coating material described in this specification is an organic coating applied electrically over steel and aluminum. It is often referred to as: Electrophoretic coating, E-Coat, and electrocoat.

Symbols. Not applicable.

Applicability. This specification covers parts that are ELPO coated outside of GM, including those parts that may receive subsequent topcoats. Parts must be cleaned and receive a pretreatment using approved materials. Processing parameters should conform to those recommended by the chemical suppliers. De-ionized or reverse osmosis water rinses must be included and properly maintained in order to meet the processing performance requirements of this specification. 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), Galvanized steel, and Aluminum substrates (Al).

Remarks. Not applicable