ASTM B449-93(1998)

    Standard Specification for Chromates on Aluminum


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    1. 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B117 Practice for Operating Salt Spray (Fog) Apparatus

    B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings

    B767 Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures

    D1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting

    D3359 Test Methods for Measuring Adhesion by Tape Test


    ICS Code

    ICS Number Code 25.220.99 (Other treatments and coatings)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/B0449-93R98

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM B449-93(1998), Standard Specification for Chromates on Aluminum, ASTM International, West Conshohocken, PA, 1998, www.astm.org

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