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Homepage>ASTM Standards>25>25.220>25.220.99>ASTM B0449-93R22 - Standard Specification for Chromates on Aluminum
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Released: 01.10.2022

ASTM B0449-93R22 - Standard Specification for Chromates on Aluminum

Standard Specification for Chromates on Aluminum

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Standard number:B0449-93R22
Keywords:chromate; clear chromate; conversion coating; nonrinsed; passivation coating; rinsed; yellow chromate;

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/DIS 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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.