ASTM B449-93(2022) PDF

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/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.

ASTM B449-93(2022) Referenced Document

ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
ASTM B602 Standard Test Method for Attribute Sampling of Metallic and Inorganic Coatings
ASTM B767 Standard Guide for Determining Mass Per Unit Area of Electrodeposited and Related Coatings by Gravimetric and Other Chemical Analysis Procedures
ASTM D1730 Standard Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
ASTM D3359 Standard Test Methods for Measuring Adhesion by Tape Test
ISO 2409 Paints and varnishes — Cross-cut test
ISO 3768 Metallic coatings — Neutral salt spray test (NSS test)
ISO 3892 Conversion coatings on metallic materials - Determination of coating mass per unit area - Gravimetric methods
ISO 4519 Electrodeposited metallic coatings and related finishes; Sampling procedures for inspection by attributes