ASTM D6695-16
(Practice)Standard Practice for Xenon-Arc Exposures of Paint and Related Coatings
Standard Practice for Xenon-Arc Exposures 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 daylight, 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 salt water exposure.
4.2 Caution—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 9 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 a xenon-arc is significantly different from that produced in light and water exposure devices using carbon-arc or other light sources. The type and rate of degradation and the performance rankings produced by exposures to xenon-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 light source, filter type, 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.6,7 Therefore, exposure of a similar material of known performance (a control) at the same time as the test mater...
SCOPE
1.1 This practice covers the selection of test conditions for accelerated exposure testing of coatings and related products in xenon arc devices conducted according to Practices G151 and G155. This practice also covers the preparation of test specimens, the test conditions suited for coatings, and the evaluation of test results.
Note 1: This practice and ISO 16474-2 address the same subject matter but differ in technical content.
1.2 The values SI units are to be regarded as 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.
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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: D6695 − 16
Standard Practice for
1
Xenon-Arc Exposures of Paint and Related Coatings
This standard is issued under the fixed designation D6695; 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 D662 Test Method for Evaluating Degree of Erosion of
Exterior Paints
1.1 This practice covers the selection of test conditions for
D714 Test Method for Evaluating Degree of Blistering of
acceleratedexposuretestingofcoatingsandrelatedproductsin
Paints
xenon arc devices conducted according to Practices G151 and
D772 Test Method for Evaluating Degree of Flaking (Scal-
G155. This practice also covers the preparation of test
ing) of Exterior Paints
specimens, the test conditions suited for coatings, and the
D823 Practices for Producing Films of Uniform Thickness
evaluation of test results.
of Paint, Varnish, and Related Products on Test Panels
NOTE 1—This practice and ISO 16474-2 address the same subject
D1005 Test Method for Measurement of Dry-Film Thick-
matter but differ in technical content.
ness of Organic Coatings Using Micrometers
1.2 The values SI units are to be regarded as standard. The
D1186 Test Methods for Nondestructive Measurement of
values given in parentheses are for information only.
Dry Film Thickness of Nonmagnetic Coatings Applied to
3
1.3 This standard does not purport to address all of the a Ferrous Base (Withdrawn 2006)
safety concerns, if any, associated with its use. It is the D1400 TestMethodforNondestructiveMeasurementofDry
responsibility of the user of this standard to establish appro- Film Thickness of Nonconductive Coatings Applied to a
3
priate safety and health practices and determine the applica- Nonferrous Metal Base (Withdrawn 2006)
bility of regulatory limitations prior to use. D1729 Practice for Visual Appraisal of Colors and Color
Differences of Diffusely-Illuminated Opaque Materials
2. Referenced Documents D1730 Practices for Preparation of Aluminum and
2
Aluminum-Alloy Surfaces for Painting
2.1 ASTM Standards:
D2244 Practice for Calculation of Color Tolerances and
D358 Specification for Wood to Be Used as Panels in
3
Color Differences from Instrumentally Measured Color
Weathering Tests of Coatings (Withdrawn 2014)
Coordinates
D523 Test Method for Specular Gloss
D2616 Test Method for Evaluation of Visual Color Differ-
D609 Practice for Preparation of Cold-Rolled Steel Panels
ence With a Gray Scale
for Testing Paint, Varnish, Conversion Coatings, and
D3359 Test Methods for Measuring Adhesion by Tape Test
Related Coating Products
D3980 Practice for Interlaboratory Testing of Paint and
D610 Practice for Evaluating Degree of Rusting on Painted
3
Related Materials (Withdrawn 1998)
Steel Surfaces
D4214 Test Methods for Evaluating the Degree of Chalking
D659 MethodforEvaluatingDegreeofChalkingofExterior
3
of Exterior Paint Films
Paints (Withdrawn 1990)
D5870 Practice for Calculating Property Retention Index of
D660 Test Method for Evaluating Degree of Checking of
Plastics
Exterior Paints
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
E1347 Test Method for Color and Color-Difference Mea-
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
surement by Tristimulus Colorimetry
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
G113 Terminology Relating to Natural andArtificial Weath-
Current edition approved May 1, 2016. Published May 2016. Originally
ering Tests of Nonmetallic Materials
approved in 2001. Last previous edition approved in 2008 as D6695 – 08. DOI:
G141 Guide for Addressing Variability in Exposure Testing
10.1520/D6695-16.
2
of Nonmetallic Materials
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
G147 Practice for Conditioning and Handling of Nonmetal-
Standards volume information, refer to the standard’s Document Summary page on
lic Materials for Natural and Artificial Weathering Tests
the ASTM website.
3
G151 Practice for Exposing Nonmetallic Materials inAccel-
The last approved version of this historical standard is referenced on
www.astm.org. erated Test Devices that Use Laboratory Light Sources
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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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.
Designation: D6695 − 08 D6695 − 16
Standard Practice for
1
Xenon-Arc Exposures of Paint and Related Coatings
This standard is issued under the fixed designation D6695; 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
xenon arc devices conducted according to Practices G151 and G155. 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.
NOTE 1—ISO 11341 also describes xenon-arc exposures of paints and coatings. However, the exposure conditions described in ISO 11341 are different
than those listed This practice and ISO 16474-2 address the same subject matter but differ in Table 1.technical content.
1.2 The values SI units are to be regarded as 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.
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
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
3
D659 Method for Evaluating Degree of Chalking of Exterior Paints (Withdrawn 1990)
D660 Test Method for Evaluating Degree of Checking of Exterior Paints
D662 Test Method for Evaluating Degree of Erosion of Exterior Paints
D714 Test Method for Evaluating Degree of Blistering of Paints
D772 Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints
D823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D1186 Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous
3
Base (Withdrawn 2006)
D1400 Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a
3
Nonferrous Metal Base (Withdrawn 2006)
D1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
D1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D2616 Test Method for Evaluation of Visual Color Difference With a Gray Scale
D3359 Test Methods for Measuring Adhesion by Tape Test
3
D3980 Practice for Interlaboratory Testing of Paint and Related Materials (Withdrawn 1998)
D4214 Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films
D5870 Practice for Calculating Property Retention Index of Plastics
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 June 1, 2008May 1, 2016. Published July 2008May 2016. Originally approved in 2001. Last previous edition approved in 20032008 as
D6695 – 03a.D6695 – 08. DOI: 10.1520/D6695-08.10.1520/D6695-16.
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
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D6695 − 16
A
TABLE 1 Test Cycles Commonly Used for Xenon-Arc Exposure Testing of Paints and Related Coatings
Uninsulated Black
B D E
Cycle Number Cycle Descripti
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