ASTM-B449 › Historical Revision Information
Standard Specification for Chromates on Aluminum
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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.
chromate; clear chromate; conversion coating; non-rinsed; passivation coating; rinsed; yellow chromate; ICS Number Code 25.220.99 (Other treatments and coatings)
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Sept. 15, 1993