ASTM-B449 Historical Revision Information
Standard Specification for Chromates on Aluminum

ASTM-B449 - 1993 R04 EDITION - SUPERSEDED
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This specification covers the requirements relating to rinsed and non rinsed chromate conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings. Aluminum and aluminum alloys are chromate coated in order to retard corrosion; as a base for organic films including paints, plastics, and adhesives; and as a protective coating having a low electrical contact impedance. The materials are classified according to its coating thickness: Class 1; Class 2; Class 3; and Class 4. Chromate conversion coatings are normally applied by dipping: the coating may also be applied by inundation, spraying, roller coating, or by wipe-on techniques.

ORDER

Scope

1.1 This specification covers the requirements relating to rinsed and nonrinsed chromate conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings. This edition of the specification has been coordinated with ISO 10546 and is technically equivalent.

1.2 Aluminum and aluminum alloys are chromate coated in order to retard corrosion; as a base for organic films including paints, plastics, and adhesives; and as a protective coating having a low electrical contact impedance.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

chromate; clear chromate; conversin coating; non-rinsed; passivation coating; rinsed; yellow chromate; ICS Number Code 25.220.99 (Other treatments and coatings)

To find similar documents by ASTM Volume:

02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)

To find similar documents by classification:

25.220.99 (Other treatments and coatings)

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Document Number

ASTM-B449-93(2004)

Revision Level

1993 R04 EDITION

Status

Superseded

Modification Type

Reapproval

Publication Date

April 1, 2004

Document Type

Specification

Page Count

5 pages

Committee Number

B08.07