TT-C-490 › Chemical Conversion Coatings and Pretreatments for Metallic Substrates (Base for Organic Coatings)
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Chemical Conversion Coatings and Pretreatments for Metallic Substrates (Base for Organic Coatings)
1.1 Scope. This specification covers processes, pretreatments, and pre-primer surface preparations of metallic substrates for coating applicators. It covers metal surface preparation for delaying corrosion initiation and promoting primer adhesion. In addition, this specification covers the testing requirements for qualification of conversion coatings, the pretreatments and pre-primer coatings.
This federal specification replaced MIL-C-490 and MIL-P-14504 and is one of the most commonly used plating specifications we sell. You'll need to be aware that the new Revision F has extensive changes from the now-obsolete 17-page TT-C-490E from 2002, so there are no lines in the margins showing you the updated material. Changes have been made throughout the document.
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