ASTM D5031-23
(Practice)Standard Practice for Enclosed Carbon-Arc Exposure Tests of Paint and Related Coatings
Standard Practice for Enclosed Carbon-Arc Exposure Tests of Paint and Related Coatings
SIGNIFICANCE AND USE
4.1 The ability of a paint or coating to resist deterioration of its physical and optical properties caused by exposure to light, heat, and water can be very significant for many applications. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. The exposure used in this practice is not intended to 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 power distribution of light from an enclosed carbon arc is significantly different from that produced in light and water exposure devices using other carbon-arc configurations or other light sources. The type and rate of degradation and the performance rankings produced by exposures to enclosed carbon arcs 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 type of carbon arc, filters, 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.4,5 Therefore, exposure of a similar material of known performance ...
SCOPE
1.1 This practice covers the selection of test conditions for accelerated exposure testing of coatings and related products in enclosed carbon arc devices operated according to Practices G151 and G153. This practice also covers the preparation of test specimens, the test conditions suited for coatings, and the evaluation of test results.
1.2 This practice does not cover filtered open-flame carbon-arc exposures of paints and related coatings, which is described in Practice D822. Another procedure for exposing these products is covered by Practice D3361/D3361M, in which the specimens are subjected to radiation from an unfiltered open-flame carbon arc that produces shorter wavelengths and higher levels of short wavelength radiation than filtered open flame or enclosed carbon arcs.
Note 1: Practice D3361/D3361M requires use of open-flame carbon-arc apparatus with automatic humidity control.
1.3 The values in SI units are to be regarded as standard. The values given in parentheses are for information only and are not considered 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.
General Information
Relations
Buy Standard
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: D5031 − 23
Standard Practice for
Enclosed Carbon-Arc Exposure Tests of Paint and Related
1
Coatings
This standard is issued under the fixed designation D5031; 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
2
2.1 ASTM Standards:
1.1 This practice covers the selection of test conditions for
D358 Specification for Wood to Be Used as Panels in
accelerated exposure testing of coatings and related products in
3
Weathering Tests of Coatings (Withdrawn 2014)
enclosed carbon arc devices operated according to Practices
D523 Test Method for Specular Gloss
G151 and G153. This practice also covers the preparation of
D609 Practice for Preparation of Cold-Rolled Steel Panels
test specimens, the test conditions suited for coatings, and the
for Testing Paint, Varnish, Conversion Coatings, and
evaluation of test results.
Related Coating Products
1.2 This practice does not cover filtered open-flame carbon-
D610 Practice for Evaluating Degree of Rusting on Painted
arc exposures of paints and related coatings, which is described
Steel Surfaces
in Practice D822. Another procedure for exposing these prod-
D659 Method for Evaluating Degree of Chalking of Exterior
ucts is covered by Practice D3361/D3361M, in which the
3
Paints (Withdrawn 1990)
specimens are subjected to radiation from an unfiltered open-
D660 Test Method for Evaluating Degree of Checking of
flame carbon arc that produces shorter wavelengths and higher
Exterior Paints
levels of short wavelength radiation than filtered open flame or
D662 Test Method for Evaluating Degree of Erosion of
enclosed carbon arcs.
Exterior Paints
NOTE 1—Practice D3361/D3361M requires use of open-flame carbon-
D714 Test Method for Evaluating Degree of Blistering of
arc apparatus with automatic humidity control.
Paints
D772 Test Method for Evaluating Degree of Flaking (Scal-
1.3 The values in SI units are to be regarded as standard.
ing) of Exterior Paints
The values given in parentheses are for information only and
D822 Practice for Filtered Open-Flame Carbon-Arc Expo-
are not considered standard.
sures of Paint and Related Coatings
1.4 This standard does not purport to address all of the
D823 Practices for Producing Films of Uniform Thickness
safety concerns, if any, associated with its use. It is the
of Paint, Coatings and Related Products on Test Panels
responsibility of the user of this standard to establish appro-
D1005 Test Method for Measurement of Dry-Film Thick-
priate safety, health, and environmental practices and deter-
ness of Organic Coatings Using Micrometers
mine the applicability of regulatory limitations prior to use.
D1729 Practice for Visual Appraisal of Colors and Color
1.5 This international standard was developed in accor-
Differences of Diffusely-Illuminated Opaque Materials
dance with internationally recognized principles on standard-
D1730 Practices for Preparation of Aluminum and
ization established in the Decision on Principles for the
Aluminum-Alloy Surfaces for Painting
Development of International Standards, Guides and Recom-
D2244 Practice for Calculation of Color Tolerances and
mendations issued by the World Trade Organization Technical
Color Differences from Instrumentally Measured Color
Barriers to Trade (TBT) Committee.
Coordinates
1 2
This practice is under the jurisdiction of ASTM Committee D01 on Paint and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Related Coatings, Materials, and Applications and is the direct responsibility of contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee D01.27 on Accelerated Testing. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2023. Published December 2023. Originally the ASTM website.
3
approved in 1989. Last previous edition approved in 2018 as D5031/D5031M – 13 The last approved version of this historical standard is referenced on
(2018). DOI: 10.1520/D5031-23. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5031 − 23
D2616 Test Method for Evaluation of Visual Color Differ- arc configurations or other light sources. The type and rate of
ence With a Gray Scale degradation and the performance rankings produced by expo-
D3361/D3361M Practice for Unfiltered O
...
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: D5031/D5031M − 13 (Reapproved 2018) D5031 − 23
Standard Practice for
Enclosed Carbon-Arc Exposure Tests of Paint and Related
1
Coatings
This standard is issued under the fixed designation D5031/D5031M;D5031; 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 the selection of test conditions for accelerated exposure testing of coatings and related products in
enclosed carbon arc devices operated according to Practices G151 and G153. This practice also covers the preparation of test
specimens, the test conditions suited for coatings, and the evaluation of test results.Table 1 describes commonly used test
conditions.
1.2 This practice does not cover filtered open-flame carbon-arc exposures of paints and related coatings, which is described in
Practice D822/D822MD822. Another procedure for exposing these products is covered by Practice D3361/D3361M, in which the
specimens are subjected to radiation from an unfiltered open-flame carbon arc that produces shorter wavelengths and higher levels
of short wavelength radiation than filtered open flame or enclosed carbon arcs.
NOTE 1—Practice D3361/D3361M requires use of open-flame carbon-arc apparatus with automatic humidity control.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.given in parentheses are for information only
and are not considered 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.
2. Referenced Documents
2
2.1 ASTM Standards:
3
D358 Specification for Wood to Be Used as Panels in Weathering Tests of Coatings (Withdrawn 2014)
D523 Test Method for Specular Gloss
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 Sept. 1, 2018Dec. 1, 2023. Published September 2018December 2023. Originally approved in 1989. Last previous edition approved in 20132018
as D5031/D5031M – 13. DOI: 10.1520/D5031_D5031M-13R18.– 13 (2018). DOI: 10.1520/D5031-23.
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.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5031 − 23
A
TABLE 1 Test Cycles Commonly Used for Enclosed Carbon-Arc Exposure Testing of Paints and Related Coatings
Uninsulated Black
B,C,D
Panel Temperature
B,C
Cycle Cycle Description °C °F
E
Typical Uses
Number
Continuous light
102 min light only at 50 ± 10 % RH
63 ± 2.5 145 ± 5
G
18 min light and water spray
Repeated continuously
2 18 h continuous light
using:
102 min light only at
50 ± 10 % RH
63 ± 2.5 145 ± 5
18 min light and water
General coatings
General coatings and historical
24 ± 1.5 75 ± 3
1 G
spray F
convention
6 h dark using:
95 % relative humidity
(no water spray)
Repeated continuously
48 min light at 50 ±
10 % RH
12 min light and water 63 ± 2.5 145 ± 5
spray
Repeated continuously
3 Coatings used
4 h light at 50 ± 10 %
RH
4 h dark with water 63 ± 2.5 145 ± 5
spray
4 Repeated continuously Exterior pigmented stains
12 h light at 50 ± 10 %
RH
63 ± 2.5 145 ± 5
12
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.