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ASTM B580-79(2000)

(Specification)

Standard Specification for Anodic Oxide Coatings on Aluminum

Standard Specification for Anodic Oxide Coatings on Aluminum

SCOPE
1.1 This specification covers requirements for electrolytically formed porous oxide coatings on aluminum and aluminum alloy parts where appearance, abrasion resistance, electrical properties, and protection against corrosion are important. Nonporous, barrier layer anodic coatings used for electrical capacitors are not covered. Seven types of coatings as shown in Table 1 are provided. Definitions and typical examples of service conditions are provided in Appendix X1.  
Note 1-It is recognized that uses exist in which modifications of the coatings covered by this specification may be required. In such cases the particular properties desired by the purchaser should be the subject of agreement between the purchaser and the manufacturer.

General Information

Status
Historical
Publication Date
09-Mar-2000
ICS
25.220.20 - Surface treatment
Technical Committee
B08 - Metallic and Inorganic Coatings
Drafting Committee
B08.07 - Conversion Coatings
Current Stage
Ref Project

Relations

Replaced By
ASTM B580-79(2004) - Standard Specification for Anodic Oxide Coatings on Aluminum
Effective Date
01-Oct-2004
Referred By
ASTM F992-17(2022) - Standard Specification for Valve Label Plates
Effective Date
10-Mar-2000
Referred By
ASTM F1476-07(2019) - Standard Specification for Performance of Gasketed Mechanical Couplings for Use in Piping Applications
Effective Date
10-Mar-2000
Referred By
ASTM F993-21 - Standard Specification for Valve Locking Devices
Effective Date
10-Mar-2000
Referred By
ASTM G103-97(2023)e1 - Standard Practice for Evaluating Stress-Corrosion Cracking Resistance of Low Copper 7XXX Series Al-Zn-Mg-Cu Alloys in Boiling 6 % Sodium Chloride Solution
Effective Date
10-Mar-2000
Referred By
ASTM F1548-01(2023) - Standard Specification for Performance of Fittings for Use with Gasketed Mechanical Couplings Used in Piping Applications
Effective Date
10-Mar-2000

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ASTM B580-79(2000) - Standard Specification for Anodic Oxide Coatings on AluminumASTM B580-79(2000) - Standard Specification for Anodic Oxide Coatings on Aluminum
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ASTM B580-79(2000) - Standard Specification for Anodic Oxide Coatings on Aluminum
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn
Contact ASTM International (www.astm.org) for the lastest information
Designation: B 580 – 79 (Reapproved 2000)
Standard Specification for
Anodic Oxide Coatings on Aluminum
This standard is issued under the fixed designation B 580; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
TABLE 1 Anodic Coatings Descriptions
1. Scope
1.1 This specification covers requirements for electrolyti- NOTE 1—Hard coatings may vary in thickness from 12 µm to more than
100 µm. If the thickness of Type A is not specified, it shall be 50 µm min.
cally formed porous oxide coatings on aluminum and alumi-
Type A coatings will not be sealed unless so specified.
num alloy parts in which appearance, abrasion resistance,
electrical properties, and protection against corrosion are Type Coating (Industry) Description Minimum Film Thickness (µm)
important. Nonporous, barrier layer anodic coatings used for
A Engineering Hard Coat 50
B Architectural Class I 18
electrical capacitors are not covered. Seven types of coatings
C Architectural Class II 10
as shown in Table 1 are provided. Definitions and typical ex-
D Automotive—Exterior 8
E Interior—Moderate Abrasion 5.0
amples of service conditions are provided in Appendix X1.
F Interior—Limited Abrasion 3
G Chromic Acid 1
NOTE 1—It is recognized that uses exist in which modifications of the
coatings covered by this specification may be required. In such cases the
particular properties desired by the purchaser should be the subject of
agreement between the purchaser and the manufacturer.
B 538 Method of FACT (Ford Anodized Aluminum Corro-
sion Test) Testing
2. Referenced Documents
B 602 Test Method for Attribute Sampling of Metallic and
2.1ASTM Standards:
Inorganic Coatings
B 110 Test Method for Dielectric Strength of Anodically
D 658 Test Method for Abrasion Resistance of Organic
Coated Aluminum
Coatings by Air Blast Abrasion
B 117 Practice for Operating Salt Spray (Fog) Testing Ap-
E 429 Test Method for Measurement and Calculation of
paratus
Reflecting Characteristics of Metallic Surfaces Using Inte-
B 136 Test Method for Measurement of Stain Resistance of
grating Sphere Instruments
Anodic Coatings on Aluminum
E 430 Test Methods for Measurement of Gloss of High-
B 137 Test Method for Measurement of Coating Mass per
Gloss Surfaces by Goniophotometry
Unit Area on Anodically Coated Aluminum
2.2 Other Standards:
B 244 Test Method for Measurement of Thickness of An-
MIL-STD-105 Sampling Procedures and Tables for Inspec-
odic Coatings on Aluminum and of Other Nonconductive
tion by Attributes
Coatings on Nonmagnetic Basis Metals with Eddy-Current
MIL-STD-414 Sampling Procedures and Tables for Inspec-
Instruments
tion by Variables for Percent Defective
B 368 Test Method for Copper-Accelerated Acetic Acid-
Salt Spray (Fog) Testing (CASS Test)
3. Manufacture
B 457 Test Method for Measurement of Impedance of An-
3.1 Defects in the surface of the basis metal, such as scratch-
odic Coatings on Aluminum
es, porosity, inclusions, roll and die marks, cold shuts, and
B 487 Test Method for Measurement of Metal and Oxide
cracks, will adversely affect the appearance and perfor-mance
Coating Thicknesses by Microscopical Examination of a
of applied coatings despite the observance of best anodizing
Cross Section
practices. Accordingly, defects in the coating that result from
such conditions shall not be cause for rejection.
NOTE 2—To minimize problems of this sort, the specifications covering
1 This specification is under the jurisdiction of ASTM Committee B08 on
the basis material or the item to be anodized should contain appropriate
Metallic and Inorganic Coatings and is the direct responsibility of Subcommittee
limitations on such basis metal conditions.
B08.07 on Chemical Conversion Coatings.
Current edition approved May 25, 1979. Published August 1979. Originally
published as B 580 – 73. Last previous edition B 580 – 73. 5 Discontinued; see1986 Annual Book of ASTM Standards, Vol 02.05.
2 Discontinued; see1981 Annual Book of ASTM Standards, Part 9. 6 Annual Book of ASTM Standards, Vol 06.01.
3 Annual Book of ASTM Standards, Vol 03.02. 7 Available from Standardization Documents Order Desk, Bldg. 4 Section D,
4 Annual Book of ASTM Standards, Vol 02.05. 700
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
Copyright ASTM International
Provided by IHS under license with ASTM Licensee=ASTM/5955840001, User=Pace, John
Not for Resale, 12/10/2012 08:08:31 MST

B 580
3.2 The basis metal shall be subjected to such mechanical ance requirements for a given coating should be selected to
finishing operations, cleaning, and chemical or electrolytic control those properties necessary to the expected end use for
pretreatments as are necessary to yield anodic coatings with the product.
the final quality and appearance specified by the purchaser.
6.2 Anodic coatings supplied under this specification shall
3.3 Except where specifically excluded, anodized parts meet the minimum requirements for film thickness as stated in
shall be sealed in water or aqueous chemical solutions of such Table 1.
purity, composition, pH, and temperature, as to impart the
6.3 The following ASTM methods are applicable to anodic
properties specified herein.
coatings within the scope of this specification: B 110, B 117, B
136, B 137, B 244, B 368, B 457, B 487, B 538, D 658, E 429,
4. Significant Surfaces
and E 430. The selection of tests to be required and the level
4.1 Significant surfaces are defined as those normally
of performance against each test, with the exception of mini-
vis-ible (directly or by reflection) which are essential to the
mum film thickness, shall be subject to agreement between
appearance of serviceability of the article when assembled in
purchaser and manufacturer. The Dye Stain Test, as described
normal position; or those surfaces which can be t
...

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This specification covers measurement of strain resistance of anodic coatings on aluminium and its alloys, that have undergone a sealing treatment and contact with an acidic solution, are stainproof or nonadsorptive with respect to dyes. The method comprises contacting the test area of the anodized specimen with nitric acid solution and, after rinsing and drying, applying a special dye solution followed by rinsing and rubbing the test area with pumice powder, drying, and visual examination of the test area for retention of dye stain. Coatings that exhibit no dye stain or change in color are considered to have passed the test. Reagent grade chemicals shall be used in all tests. A specified solution of nitric acid shall be prepared in distilled or deionized water. A specified volume of aluminium blue 2WL dye shall be dissolved in distilled or deionized water.
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1.5.3 Anodic coatings that have been sealed only in dichromate solutions.  
1.5.4 Anodic coatings that have undergone a treatment to render them hydrophobic.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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.  
1.8 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.

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Standard Specification for Hard-Coat Anodizing of Magnesium for Engineering Applications

SCOPE
1.1 This specification covers requirements for electrolytically formed oxide coatings on magnesium and magnesium alloy parts where appearance, abrasion resistance, and protection against corrosion are important.  
1.2 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.  
1.3 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.

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