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ASTM D3260-82(1996)e1

(Test Method)

Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products

Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products

SCOPE
1.1 This test method covers the evaluation of the mortar and acid resistance of clear protective coating factory applied to extruded aluminum substrates.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 limitations prior to use.

General Information

Status
Historical
Publication Date
09-May-2001
ICS
87.020 - Paint coating processes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.55 - Factory Applied Coatings on Preformed Products
Current Stage
Ref Project

Relations

Replaced By
ASTM D3260-01 - Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products
Effective Date
10-May-2001
Referred By
ASTM D3451-06(2017) - Standard Guide for Testing Coating Powders and Powder Coatings
Effective Date
10-May-2001

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ASTM D3260-82(1996)e1 - Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum ProductsASTM D3260-82(1996)e1 - Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products
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ASTM D3260-82(1996)e1 - Standard Test Method for Acid and Mortar Resistance of Factory-Applied Clear Coatings on Extruded Aluminum Products
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 3260 – 82 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Acid and Mortar Resistance of Factory-Applied Clear
Coatings on Extruded Aluminum Products
This standard is issued under the fixed designation D 3260; 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.
e NOTE—Unit of measurement statement and keywords were added editorially in June 1996.
1. Scope 5.2 Cleaning Solution—An alkaline cleaner in the concen-
tration recommended by the manufacturer, usually 6 to 8 oz/gal
1.1 This test method covers the evaluation of the mortar and
(45 to 60 g/L) of water. The pH of the solution should be
acid resistance of clear protective coating factors applied to
between 11.4 and 12.2.
extruded aluminum substrates.
5.3 Lime—Building lime complying with Specification
1.2 The values stated in inch-pound units are to be regarded
C 207.
as the standard. The values given in parentheses are for
5.4 Neutralizing Solution—Prepare from a stable free-
information only.
flowing, granular material having a chromate base as recom-
1.3 This standard does not purport to address all of the
mended by the supplier, usually at a concentration of 12 to 16
safety concerns, if any, associated with its use. It is the
oz/gal (90 to 120 g/L) of water.
responsibility of the user of this standard to establish appro-
5.5 Sand—Dry sand capable of passing through a 10-mesh
priate safety and health practices and determine the applica-
wire screen.
bility of regulatory limitations prior to use.
6. Test Panels
2. Referenced Documents
6.1 Panels of extruded aluminum alloy No. 6063-T5 with
2.1 ASTM Standards:
dimensions 6 by 3 by ⁄4 in. (150 by 75 by 6.3 mm) shall be
C 207 Specification for Hydrated Lime for Masonry Pur-
2 used for the test.
poses
D 823 Practices for Producing Films of Uniform Thickness
7. Procedure
of Paint, Varnish, and Related Products on Test Panels
7.1 Preparation of Test Panels:
3. Summary of Test Method 7.1.1 Buff the aluminum panels and remove the buffing
compound with an organic solvent.
3.1 Panels that have been buffed, cleaned, neutralized, and
7.1.2 Immerse the panels in cleaning solution (5.2) for1hat
coated with the material being evaluated are exposed to freshly
a temperature of 200°F (93°C).
prepared mortar and to a hydrochloric acid solution.
7.1.3 Rinse the panels in tap water having a pH of 6.5 to 7.5
4. Significance and Use until the surface is free of water break. Use reagent water for
rinsing if the pH of the tap water is outside the specified limits.
4.1 This test method will provide differentiation between
The panels shall be free from evidence of corrosion or surface
types of coatings for acid and motor resistance providing the
attack.
coating is applied in a uniform continuous film with a specified
7.1.4 Immerse the panels in neutralizing solution (5.4) at 75
film thickness.
6 2°F (24 6 1°C) for 30 s to neutralize any retained alkalinity
5. Reagents
and to promote adhesion of the applied coatings.
7.1.5 Rinse the panels in reagent water and allow them to
5.1 Acid—Ten volume percent solution of commercialgrade
dry a minimum of 1 h before coating.
hydrochloric acid (31.4 to 31.8 % HCl, 20°Bé) in distilled
7.2 Coating of Test Panels:
water.
7.2.1 Apply the coatings being evaluated to the test panels
in a uniform continuous film by automatic spray equipment in
accordance with Method A of Practices D 823.
This test method is under the jurisdiction of ASTM Committee D-1 on Paint
and Related Coatings, Materials, and Applications and is the direct responsibility of
7.2.2 For the mortar test, spray two panels on one side wit
...

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International Standards Organization (ISO)  
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6  
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Thinning  
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Initial Samples  
6.3.1  
Thinning of Coating  
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Heating of Coating  
6.4  
Weather Considerations  
7  
Drying  
7.1  
Low Temperature  
7.2  
High Temperature  
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Moisture  
7.4  
Wind  
7.5  
Coating Application  
8  
Residual Contaminants  
8.1  
Quality Assurance  
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Film Defects  
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Brush Application  
8.3  
Spray Application  
8.4  
Roller Application  
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4.1 The appearance of the various degrees of dry and wet abrasive blast cleaning, hand and power tool cleaning, and water jetting are influenced by the initial rust grades of the steel being cleaned and/or the type and condition of the coating on the existing steel. The standards and guides aid visually in judging and evaluating the degree of rusting and/or paint deterioration before cleaning and the degree of cleaning of steel surfaces prior to painting.  
4.2 Five methods have evolved because of differences in the practice of using visual standards and guides throughout the world, and the method of surface preparation employed. In Europe, the visual standards (Method A) are used as the primary means of assessing the degree of cleaning. In the U.S., the SSPC written definitions take precedence with the visual guides and reference photographs used as a supplement. The visual guides and reference photographs of Methods B, C, and D conform to the SSPC written definitions. There are written definitions for Method E, however, the visual guide for Method E does not contain a complete set of pictorials corresponding to each surface cleanliness definition.
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1.1 The visual surface preparation guides and standards consist of a series of color prints available as separate publications. Five different sets of photographs are described in this standard, designated as Method A (ISO/Swedish Standard2) and Methods B through E (SSPC Guides and Reference Photographs3). The methods differ in the depiction of the initial surface, in the definition and depiction of the cleaning conditions, and in the number of cleaning methods included. Because of these differences, the specifier should state which guide to use.  
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