ASTM D4587-23
(Practice)Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings
Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings
SIGNIFICANCE AND USE
4.1 The ability of a paint or coating to resist degradation of its physical and optical properties caused by exposure to light, heat, and water can be important for many applications. This practice describes artificial accelerated weathering methods designed to reproduce property changes associated with exposure to sunlight, moisture, and heat in end-use conditions. The weathering methods referenced in this practice do not simulate the deterioration caused by localized weather phenomena such as atmospheric pollution, biological attack, and saltwater exposure.
4.2 Cautions—Variation in results may be expected when different operating conditions are used. Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared according to Section 10 that describes the specific operating conditions used. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained according to this practice.
Note 2: Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G141.
4.2.1 The spectral irradiance of light from fluorescent UV lamps is significantly different from that produced in light and water exposure devices using other light sources. The type and rate of degradation and the performance rankings produced in exposures to fluorescent UV lamps can be much different from those produced by exposures to other types of laboratory light sources.
4.2.2 Interlaboratory comparisons are valid only when all laboratories use the same design of apparatus, lamp, and exposure conditions.
4.3 Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control material.6,7 Therefore, exposure of a similar material of known performance (a ...
SCOPE
1.1 This practice describes artificial accelerated weathering methods for testing the durability of coatings and related products using fluorescent UV lamps and water apparatus operated in accordance with Practices G151 and G154.
1.2 This practice also makes recommendations for preparation of test specimens, exposure duration, and the evaluation of test results.
Note 1: ISO 16474-3 also describes fluorescent UV lamp and water apparatus for artificial accelerated weathering of paints and coatings.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
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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.
Designation: D4587 − 23
Standard Practice for
Fluorescent UV-Condensation Exposures of Paint and
1
Related Coatings
This standard is issued under the fixed designation D4587; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Related Coating Products
D610 Practice for Evaluating Degree of Rusting on Painted
1.1 This practice describes artificial accelerated weathering
Steel Surfaces
methods for testing the durability of coatings and related
D659 Method for Evaluating Degree of Chalking of Exterior
products using fluorescent UV lamps and water apparatus
3
Paints (Withdrawn 1990)
operated in accordance with Practices G151 and G154.
D660 Test Method for Evaluating Degree of Checking of
1.2 This practice also makes recommendations for prepara-
Exterior Paints
tion of test specimens, exposure duration, and the evaluation of
D662 Test Method for Evaluating Degree of Erosion of
test results.
Exterior Paints
NOTE 1—ISO 16474-3 also describes fluorescent UV lamp and water
D714 Test Method for Evaluating Degree of Blistering of
apparatus for artificial accelerated weathering of paints and coatings.
Paints
1.3 The values stated in SI units are to be regarded as the
D772 Test Method for Evaluating Degree of Flaking (Scal-
standard. The values given in parentheses are for information
ing) of Exterior Paints
only.
D823 Practices for Producing Films of Uniform Thickness
1.4 This standard does not purport to address all of the
of Paint, Coatings and Related Products on Test Panels
safety concerns, if any, associated with its use. It is the D1005 Test Method for Measurement of Dry-Film Thick-
responsibility of the user of this standard to establish appro-
ness of Organic Coatings Using Micrometers
priate safety, health, and environmental practices and deter- D1729 Practice for Visual Appraisal of Colors and Color
mine the applicability of regulatory limitations prior to use.
Differences of Diffusely-Illuminated Opaque Materials
1.5 This international standard was developed in accor- D1730 Practices for Preparation of Aluminum and
dance with internationally recognized principles on standard-
Aluminum-Alloy Surfaces for Painting
ization established in the Decision on Principles for the
D2244 Practice for Calculation of Color Tolerances and
Development of International Standards, Guides and Recom- Color Differences from Instrumentally Measured Color
mendations issued by the World Trade Organization Technical
Coordinates
Barriers to Trade (TBT) Committee. D2616 Test Method for Evaluation of Visual Color Differ-
ence With a Gray Scale
2. Referenced Documents
D3359 Test Methods for Rating Adhesion by Tape Test
2
D4214 Test Methods for Evaluating the Degree of Chalking
2.1 ASTM Standards:
of Exterior Paint Films
D16 Terminology for Paint, Related Coatings, Materials, and
D5870 Practice for Calculating Property Retention Index of
Applications
Plastics
D523 Test Method for Specular Gloss
D6631 Guide for Committee D01 for Conducting an Inter-
D609 Practice for Preparation of Cold-Rolled Steel Panels
laboratory Study for the Purpose of Determining the
for Testing Paint, Varnish, Conversion Coatings, and
Precision of a Test Method
D7091 Practice for Nondestructive Measurement of Dry
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Film Thickness of Nonmagnetic Coatings Applied to
Related Coatings, Materials, and Applications and is the direct responsibility of
Ferrous Metals and Nonmagnetic, Nonconductive Coat-
Subcommittee D01.27 on Accelerated Testing.
ings Applied to Non-Ferrous Metals
Current edition approved June 1, 2023. Published June 2023. Originally
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approved in 1986. Last previous edition approved in 2019 as D4587 – 11 (2019) . D7787 Practice for Selecting Wood Substrates for Weather-
DOI: 10.1520/D4587-23.
ing Evaluations of Architectural Coatings
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D4587 − 23
E691 Pr
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D4587 − 11 (Reapproved 2019) D4587 − 23
Standard Practice for
Fluorescent UV-Condensation Exposures of Paint and
1
Related Coatings
This standard is issued under the fixed designation D4587; 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 (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Section 4.2 was updated editorially in December 2019.
1. Scope Scope*
1.1 This practice covers the selection of test conditions for accelerated exposure testingdescribes artificial accelerated weathering
methods for testing the durability of coatings and related products inusing fluorescent UV and condensation devices conducted
according to lamps and water apparatus operated in accordance with Practices G151 and G154. This practice also covers the
preparation of test specimens, and the evaluation of test results. Table 1 describes commonly used test conditions.
NOTE 1—Previous versions of this practice referenced fluorescent UV devices described by Practice G53, which described very specific equipment
designs. Practice G53 has been withdrawn and replaced by Practice G151, which describes performance criteria for all exposure devices that use
laboratory light sources, and by Practice G154, which gives requirements for exposing nonmetallic materials in fluorescent UV devices.
NOTE 2—ISO 11507:1997 also describes fluorescent UV-condensation exposures of paints and coatings.
1.2 This practice also makes recommendations for preparation of test specimens, exposure duration, and the evaluation of test
results.
NOTE 1—ISO 16474-3 also describes fluorescent UV lamp and water apparatus for artificial accelerated weathering of paints and coatings.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D358D16 Specification for Wood to Be Used as Panels in Weathering Tests of CoatingsTerminology for Paint, Related Coatings,
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
Current edition approved Dec. 1, 2019June 1, 2023. Published December 2019June 2023. Originally approved in 1986. Last previous edition approved in 20112019 as
ɛ1
D4587 – 11.D4587 – 11 (2019) . DOI: 10.1520/D4587-11R19E01.10.1520/D4587-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D4587 − 23
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TABLE 1 Test Cycles Commonly Used for Fluorescent UV–Condensation Exposure Testing of Paints and Related Coatings
B,C D E
Cycle Number Cycle Description 340 nm Irradiance Black Panel Temperature Typical Uses
2 F
1 8 h UV 0.83 W/(m ·nm) 70 ± 2.5ºC (158 ± 5ºF) Automotive coatings
4 h condensation dark period 50 ± 2. ºC (122 ± 5ºF)
Repeated continuously
2 G
2 4 h UV 0.89 W/(m ·nm) 60 ± 2.5 (140 ± 5ºF) Industrial maintenance coatings
4 h condensation dark period 50 ± 2.5 (122 ± 5ºF)
Repeated continuously
2
3 4 h UV 0.89 W/(m ·nm) 60 ± 2.5 (140 ± 5ºF) Exterior wood coatings
20 h condensation dark period 50 ± 2.5 (122 ± 5ºF)
Repeated continuously
2
4 8 h UV 0.89 W/(m ·nm) 60 ± 2.5 (140 ± 5ºF) General metal coatings
4 h condensation dark period 50 ± 2.5 (122 ± 5ºF)
Repeated continuously
A
TABLE 1 Test Cycles Commonly U
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