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ASTM D5064-01

(Practice)

Standard Practice for Conducting a Patch Test to Assess Coating Compatibility

Standard Practice for Conducting a Patch Test to Assess Coating Compatibility

SCOPE
1.1 This practice covers the procedures for testing coating compatibility when maintenance of an in-place coating system is being contemplated. It does not cover procedures for assessing the integrity of the existing coating to determine if it can be repainted, nor does it establish the compatibility of the maintenance coating system with the substrate or corrosion products. The practice is intended for use in the field.  
Note 1--Pass-Fail Criteria (for example, adhesion requirements) are not established by this practice. These should be established by the user or specifier with input from the supplier.
1.2 The values stated in inch-pound 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
25.220.99 - Other treatments and coatings
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.46 - Industrial Protective Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D5064-95 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
Effective Date
10-May-2001
Replaced By
ASTM D5064-07 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
Effective Date
01-Jul-2007
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
10-May-2001
Referred By
ASTM E1796-20 - Standard Guide for Selection and Use of Liquid Coating Encapsulation Products for Leaded Paint in Buildings
Effective Date
10-May-2001
Referred By
ASTM D3276-21 - Standard Guide for Painting Inspectors (Metal Substrates)
Effective Date
10-May-2001
Referred By
ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
Effective Date
10-May-2001

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ASTM D5064-01 - Standard Practice for Conducting a Patch Test to Assess Coating CompatibilityASTM D5064-01 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
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ASTM D5064-01 - Standard Practice for Conducting a Patch Test to Assess Coating Compatibility
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5064–01
Standard Practice for
1
Conducting a Patch Test to Assess Coating Compatibility
This standard is issued under the fixed designation D 5064; 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.
1. Scope D 4541 Test Method for Pull-Off Strength of Coatings
3
Using Portable Adhesion Testers
1.1 This practice covers the procedures for testing coating
compatibility when maintenance of an in-place coating system
3. Terminology
is being contemplated. It does not cover procedures for
3.1 Definitions—For definitions of terms used in this prac-
assessing the integrity of the existing coating to determine if it
tice, refer to the Federation of Societies for Coatings Technol-
can be repainted, nor does it establish the compatibility of the
4
ogy (FSCT) Paint/Coatings Dictionary.
maintenance coating system with the substrate or corrosion
products. The practice is intended for use in the field.
4. Summary of Test Method
NOTE 1—Pass-Fail Criteria (for example, adhesion requirements) are
4.1 The materials under test are applied to the previously
not established by this practice.These should be established by the user or
painted surface after proper surface preparation. After the
specifier with input from the supplier.
appropriate time has elapsed, the test patch is examined for
1.2 The values stated in SI units are to be regarded as the
visual defects and adhesion is determined.
standard. The values given in parentheses are for information
5. Significance and Use
only.
1.3 This standard does not purport to address all of the
5.1 In performing maintenance of a coating system, the new
safety concerns, if any, associated with its use. It is the
coating being applied must be compatible with the existing
responsibility of the user of this standard to establish appro-
coating. While general guides exist which indicate compatibil-
priate safety and health practices and determine the applica-
ity of different generic types of coatings, differences in
bility of regulatory limitations prior to use.
manufacturer’s formulation and the condition of the in-place
coating will affect compatibility.
2. Referenced Documents
6. Procedure
2.1 ASTM Standards:
D 1186 Test Methods for Nondestructive Measurement of
6.1 Select test locations for evaluation that properly charac-
Dry Film Thickness of Nonmagnetic Coatings Applied to
terize differences in configuration of the structure and expo-
2
a Ferrous Base
sure; that is, vertical versus horizontal surfaces and sheltered
D 1400 Test Method for Nondestructive Measurement of
versusunshelteredexposure.Aminimumofthreetestlocations
DryFilmThicknessofNonconductiveCoatingsAppliedto
with one test patch in each is recommended.
2
a Nonferrous Metal Base
6.2 The size of each test patch will be determined by the
D 3359 Test Methods for Measuring Adhesion by Tape
size and configuration of the test locations. Each test patch
2
Test
shall be as large as possible, with a minimum size of 1.0
2 2
D 4138 Test Method for Measurement of Dry Film Thick-
m (10.8 ft ) recommended.
3
ness of Protective Coating Systems by Destructive Means
6.3 Clean the surface of the test areas using the methods
D 4414 PracticeforMeasurementofWetFilmThicknessby
specified for the maintenance painting procedure (Note 2).
2
Notch Gages
Alternative methods of preparation may also be evaluated in
separate, adjacent tests.
1
NOTE 2—This test method assesses compatibility with the existing
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
coating only and does not apply to areas where the substrate is exposed by
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.46 on Industrial Protective Coatings. the methods of preparation.
Current edition approved May 10, 2001. Published July 2001. Originally
published as D 5064 – 90. Last previous edition D 5064 – 95.
2 4
Annual Book of ASTM Standards, Vol 06.01. Paint/Coatings Dictionary, Federation of Societies for Coatings Technology,
3
Annual Book of ASTM Standards, Vol 06.02. Philadelphia, PA, 1978.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5064
6.4 Measure the existing coating thickness in accordance 6.9.1 Long-Term Curing—Curing for as long a time as
with Test Methods D 1186, D 1400, or D 4138, as appropriate possible, with a minimum of six months preferred. Curing
for the substrate. should span seasonal weather changes.
6.5 Measuretheambientconditionsandsurfacetemperature 6.9
...

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4.1 Protective coatings are used on metallic and concrete storage and processing vessels, shipping containers, dams and rail cars to protect the substrate from corrosive attack and to protect stored materials (cargo) from contamination. This method provides a means to assess the ability of a protective coating to resist degradation by chemicals and to protect the liquid cargo from contamination by either the substrate or coating, based on visual observations. Other measures of degradation, such as changes in weight or dimensions of the coating material, or chemical changes to the cargo, may be used to assess this protective ability as mutually agreed upon between contracting parties. Simple chemical-resistance evaluations of the lining materials may be performed more conveniently by other pertinent methods as a prescreening test for this procedure in accordance with Test Methods C267 and D471.  
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5.1 This test method is an extension of Test Method D5403. While Test Method D5403 specifies that a test specimen be cured by exposure to UV or EB as prescribed by the supplier of the material, most radiation curable monomers and oligomers provided as raw materials to formulators are not designed to be used alone but rather as blends of monomers and oligomers so that there are no “supplier prescribed” exposure conditions. Test Method D5403 is not appropriate for the measurement of volatiles from thin radiation-curable coatings because supplier prescribed cure conditions include both a thickness and an exposure specification which are difficult or impossible to achieve in a test lab. Furthermore, inks form a special class of thin radiation curable coatings because they are formulated with known interferences (for example, pigments). As a result, Test Method D5403 does not provide a method for measuring volatiles from monomers and oligomers used as raw materials in the formulation of radiation curable coatings nor does it provide a method for measuring volatiles from thin radiation curable coatings such as inks.  
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1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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.
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.  
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Standard Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings

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5.1 This test procedure is used to simulate the physical and environmental stresses that a coating for exterior transportation applications (for example, automotive) is exposed to in a subtropical climate, such as southern Florida. It has been found that such a subtropical climate causes particularly severe deterioration of such coatings. The long water exposures and wet/dry cycling found in southern Florida are particularly important for this deterioration, in addition to the high dosage of solar radiation (3). This practice was developed to address the deficiencies of historical tests used for transportation coatings, especially automotive coatings (4).
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SCOPE
1.1 This practice specifies the operating procedures for a controlled irradiance xenon arc light and water apparatus. The procedure uses one or more lamp(s) and optical filter(s) to produce irradiance similar to sunlight in the UV and visible range. It also simulates the water absorption and stress cycles experienced by automotive exterior coatings under natural weathering conditions. This practice has also been found applicable to coatings on other transportation vehicles, such as aircraft, trucks and rail cars.  
1.2 This practice uses a xenon arc light source with specified optical filter(s). The spectral power distribution (SPD) for the lamp and special daylight filter(s) is as specified in Annex A1. The irradiance level used in this practice varies between 0.40 and 0.80 W/(m2·nm) at 340 nm. Water is sprayed on the specimens during portions of several dark steps. The application of water is such that the coatings will absorb and desorb substantial amounts of water during testing. In addition, the cycling between wet/dry and warm/cool will induce mechanical stresses into the materials. These test conditions are designed to simulate the physical and chemical stresses from environments in a subtropical climate, such as southern Florida.  
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