This specification covers chemical conversion materials used in the formation of coatings by the reaction of the material with the surfaces of aluminum and aluminum alloys.

Type I-Contains hexavalent chromium.

Type II-Does not contain hexavalent chromium.

Class 1A-For maximum protection against corrosion on painted or unpainted surfaces.

Class 3-For corrosion protection where low electrical resistance is required.

Form I-Liquid concentrate

Form II-Powder

Form III-Premixed liquid

Form IV-Ready to use thixotropic premixed liquid

Form V-Ready to use thixotropic premeasured powder (after addition of water)

Form VI-Premixed liquid in a self contained device for touch up use

Method A-Spray

Method B-Wipe or brush on

Method C-Immersion

Method D-Applicator pen or presaturated device

A conversion coating for maintenance pre-paint operations on aluminum surfaces prior to priming and painting.