ASTM B921-08
Historical Standard: ASTM B921-08 Standard Specification for Non-hexavalent Chromium Conversion Coatings on Aluminum and Aluminum Alloys
SUPERSEDED (see Active link, below)
ASTM B921
1. Scope
1.1 This specification covers the requirements relating to rinsed and non-rinsed non-hexavalent chromium conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings.
1.2 Aluminum and aluminum alloys are conversion 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 concerns, 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 requirements 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
D1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D3359 Test Methods for Measuring Adhesion by Tape Test
ISO Standards
ISO4519 Electrodeposited Metallic Coatings and Related FinishesSampling Procedures for Inspection by AttributesFederal Standard
Fed.Std.No.141 Paints, Varnish, Lacquer, and Related Materials; Methods of Inspection Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.Military Specification
MIL-DTL-81706 Chemical Conversion Materials For Coating Aluminum and Aluminum AlloysKeywords
conversion coating; non-hexavalent chromium conversion coating; non-rinsed; rinsed;
ICS Code
ICS Number Code 77.120.10 (Aluminium and aluminium alloys)
DOI: 10.1520/B0921-08
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