ASTM D4585/D4585M-18
(Practice)Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation
Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation
SIGNIFICANCE AND USE
4.1 Water can cause degradation of coatings, so knowledge of how a coating resists water is helpful in predicting its service life. Failure in a condensation test may be caused by a number of factors including a deficiency in the coating itself, contamination of the substrate, or inadequate surface preparation. The test is therefore useful for evaluating coatings alone or complete coating systems.
4.2 Condensation tests of coatings are used for specification acceptance, quality control, and research and development of coatings and substrate treatments. These tests usually result in a pass or fail determination but the degree of failure also may be measured. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time.
4.3 Results obtained from the use of condensation tests in accordance with this practice should not be represented as being equivalent to a period of exposure to water in the natural environment, until the degree of quantitative correlation has been established for the coating or coating system.
4.4 The test is usually conducted on metal, plastics, or wood specimens with the coating facing the inside of the chamber. However, it is possible to test the blister resistance of house coatings on wood specimens by mounting the uncoated wood surface facing the inside of the chamber.
4.5 This practice can be used for corrosion tests particularly if the specimens are periodically dried. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens.
SCOPE
1.1 This practice covers basic principles and operating procedures for testing water resistance of coatings using controlled condensation. Condensation is produced by exposing one surface of a coated specimen to a heated, saturated mixture of air and water vapor, while the reverse side of the specimen is exposed to the cooling effect of room temperature air. This practice is derived from research of the Cleveland Society for Coatings Technology.2
1.2 This practice is limited to the methods of obtaining, measuring, and controlling conditions and procedures of controlled condensation tests. It does not specify specimen preparation, specific test conditions, or evaluation of results.
Note 1: Alternative practices for testing water resistance of coatings include Practices D870, D1735, and D2247.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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.
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Standards Content (Sample)
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: D4585/D4585M − 18
Standard Practice for
Testing Water Resistance of Coatings Using Controlled
1
Condensation
This standard is issued under the fixed designation D4585/D4585M; 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* 2. Referenced Documents
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1.1 This practice covers basic principles and operating 2.1 ASTM Standards:
procedures for testing water resistance of coatings using D609 Practice for Preparation of Cold-Rolled Steel Panels
controlled condensation. Condensation is produced by expos- for Testing Paint, Varnish, Conversion Coatings, and
ing one surface of a coated specimen to a heated, saturated Related Coating Products
mixture of air and water vapor, while the reverse side of the D610 Practice for Evaluating Degree of Rusting on Painted
specimen is exposed to the cooling effect of room temperature Steel Surfaces
air. This practice is derived from research of the Cleveland D714 Test Method for Evaluating Degree of Blistering of
2
Society for Coatings Technology. Paints
D823 Practices for Producing Films of Uniform Thickness
1.2 This practice is limited to the methods of obtaining,
of Paint, Coatings and Related Products on Test Panels
measuring, and controlling conditions and procedures of con-
D870 Practice for Testing Water Resistance of Coatings
trolled condensation tests. It does not specify specimen
Using Water Immersion
preparation, specific test conditions, or evaluation of results.
D1654 Test Method for Evaluation of Painted or Coated
NOTE 1—Alternative practices for testing water resistance of coatings
Specimens Subjected to Corrosive Environments
include Practices D870, D1735, and D2247.
D1730 Practices for Preparation of Aluminum and
1.3 The values stated in either SI units or inch-pound units
Aluminum-Alloy Surfaces for Painting
are to be regarded separately as standard. The values stated in
D1735 Practice for Testing Water Resistance of Coatings
each system may not be exact equivalents; therefore, each
Using Water Fog Apparatus
system shall be used independently of the other. Combining
D2247 Practice for Testing Water Resistance of Coatings in
values from the two systems may result in non-conformance
100 % Relative Humidity
with the standard.
D2616 Test Method for Evaluation of Visual Color Differ-
ence With a Gray Scale
1.4 This standard does not purport to address all of the
D3359 Test Methods for Rating Adhesion by Tape Test
safety concerns, if any, associated with its use. It is the
D3363 Test Method for Film Hardness by Pencil Test
responsibility of the user of this standard to establish appro-
D4541 Test Method for Pull-Off Strength of Coatings Using
priate safety, health, and environmental practices and deter-
Portable Adhesion Testers
mine the applicability of regulatory limitations prior to use.
G154 Practice for Operating Fluorescent Ultraviolet (UV)
1.5 This international standard was developed in accor-
Lamp Apparatus for Exposure of Nonmetallic Materials
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3. Summary of Practice
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3.1 Watervaporisgeneratedbyheatingapanofwateratthe
Barriers to Trade (TBT) Committee.
bottom of the test chamber. The specimens form the roof or
walls of the test chamber so that the back sides of the
specimens are exposed to the cooling effects of room tempera-
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This practice is under the jurisdiction of ASTM Committee D01 on Paint and
tureair.Theresultingheattransfercausesvaportocondenseon
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
the test specimens as liquid water saturated with air.
Current edition approved July 1, 2018. Published July 2018. Originally approved
in 1986. Last previous edition approved in 2013 as D4585 – 13. DOI: 10.1520/
D4585_D4585M-18.
2 3
Foecking, N. J., “Cleveland Condensing Type Humidity Cabinet,” Offıcial For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Digest, December 1963, Vol 35, No. 467, pp. 1318–1327; and Higgins, W. A., contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
“Cleveland Condensing Type Humidity Cabinet: II,” Offıcial Digest, November Standards volume information, refer to the standard’s Document Summary pag
...
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.
Designation: D4585/D4585M − 13 D4585/D4585M − 18
Standard Practice for
Testing Water Resistance of Coatings Using Controlled
1
Condensation
This standard is issued under the fixed designation D4585/D4585M; 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*
1.1 This practice covers basic principles and operating procedures for testing water resistance of coatings using controlled
condensation. Condensation is produced by exposing one surface of a coated specimen to a heated, saturated mixture of air and
water vapor, while the reverse side of the specimen is exposed to the cooling effect of room temperature air. This practice is derived
2
from research of the Cleveland Society for Coatings Technology.
1.2 This practice is limited to the methods of obtaining, measuring, and controlling conditions and procedures of controlled
condensation tests. It does not specify specimen preparation, specific test conditions, or evaluation of results.
NOTE 1—Alternative practices for testing water resistance of coatings include Practices D870, D1735, and D2247.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the 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 safety, health, and healthenvironmental 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
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2.1 ASTM Standards:
D609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating
Products
D610 Practice for Evaluating Degree of Rusting on Painted Steel Surfaces
D714 Test Method for Evaluating Degree of Blistering of Paints
D823 Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels
D870 Practice for Testing Water Resistance of Coatings Using Water Immersion
D1654 Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
D1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D1735 Practice for Testing Water Resistance of Coatings Using Water Fog Apparatus
D2247 Practice for Testing Water Resistance of Coatings in 100 % Relative Humidity
D2616 Test Method for Evaluation of Visual Color Difference With a Gray Scale
D3359 Test Methods for Rating Adhesion by Tape Test
D3363 Test Method for Film Hardness by Pencil Test
D4541 Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers
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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 June 1, 2013July 1, 2018. Published September 2013July 2018. Originally approved in 1986. Last previous edition approved in 20072013 as
D4585 – 07.D4585 – 13. DOI: 10.1520/D4585_D4585M-13.10.1520/D4585_D4585M-18.
2
Foecking, N. J., “Cleveland Condensing Type Humidity Cabinet,” Offıcial Digest, December 1963, Vol 35, No. 467, pp. 1318–1327; and Higgins, W. A., “Cleveland
Condensing Type Humidity Cabinet: II,” Offıcial Digest, November 1965, Vol 37, No. 490, pp. 1392–1404.
3
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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