ASTM D6695-08
(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
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 salt water exposure.
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 10 that describes the specific operating conditions used. Refer to Practice G 151 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 G 141.
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.
Interlaboratory comparisons are valid only when all laboratories use the same light source, filter type, and exposure conditions.
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. , Therefore, exposure of a similar material of known performance (a control) at the same time as the test materials is strongly recommend...
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 G 151 and G 155. 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 in Table 1.
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.
General Information
Relations
Buy Standard
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: D6695 − 08
StandardPractice 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 D660 Test Method for Evaluating Degree of Checking of
Exterior Paints
1.1 This practice covers the selection of test conditions for
D662 Test Method for Evaluating Degree of Erosion of
acceleratedexposuretestingofcoatingsandrelatedproductsin
Exterior Paints
xenon arc devices conducted according to Practices G151 and
D714 Test Method for Evaluating Degree of Blistering of
G155. This practice also covers the preparation of test
Paints
specimens, the test conditions suited for coatings, and the
D772 Test Method for Evaluating Degree of Flaking (Scal-
evaluationoftestresults.Table1describescommonlyusedtest
ing) of Exterior Paints
conditions.
D823 Practices for Producing Films of Uniform Thickness
NOTE 1—ISO 11341 also describes xenon-arc exposures of paints and
of Paint, Varnish, and Related Products on Test Panels
coatings. However, the exposure conditions described in ISO 11341 are
D1005 Test Method for Measurement of Dry-Film Thick-
different than those listed in Table 1.
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
Plastics
E691 Practice for Conducting an Interlaboratory Study to
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Determine the Precision of a Test Method
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
E1347 Test Method for Color and Color-Difference Mea-
CurrenteditionapprovedJune1,2008.PublishedJuly2008.Originallyapproved
surement by Tristimulus Colorimetry
in 2001. Last previous edition approved in 2003 as D6695 – 03a. DOI: 10.1520/
G113 Terminology Relating to Natural andArtificial Weath-
D6695-08.
2
ering Tests 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
G141 Guide for Addressing Variability in Exposure Testing
Standards volume information, refer to the standard’s Document Summary page on
of Nonmetallic Materials
the ASTM website.
3
G147 Practice for Conditioning and Handling of Nonmetal-
The last approved version of this historical standard is referenced on
www.astm.org. lic Materials for Natural and Artificial Weathering Tests
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6695 − 08
A
TABLE 1 Test Cycles Commonly Used for Xenon-Arc Exposure Testing of Paints and Related Coatings
Uninsulated Black
B D E
Cycle Numb
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D6695–03b Designation:D6695–08
Standard Practice for
1
Xenon-Arc Exposures of Paint and Related Coatings
This standard is issued under the fixed designation D 6695; 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 G 151 and G 155. 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.
NOTE1—ISO 11341:1994 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 in Table 1.
1.2
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:
D 358 Specification for Wood to Be Used as Panels in Weathering Tests of Coatings
D 523 Test Method for Specular Gloss
D 609 Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related
Coating Products
D 610Test Method Practice for Evaluating Degree of Rusting on Painted Steel Surfaces
3
D 659 Method of Evaluating Degree of Chalking of Exterior Paints
D 660 Test Method for Evaluating Degree of Checking of Exterior Paints
D 662 Test Method for Evaluating Degree of Erosion of Exterior Paints
D 714 Test Method for Evaluating Degree of Blistering of Paints
D 772 Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints
D 823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D 1005 Test MethodsMethod for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
D 1186 Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic CoatingsApplied to a Ferrous
Base
D 1400 Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a
Nonferrous Metal Base
D 1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
D 1730 Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting
D 2244 Practice for Calculation of Color Tolerances and Color Differences Fromfrom Instrumentally Measured Color
Coordinates
D 2616 Test Method for Evaluation of Visual Color Difference withWith a Gray Scale
D 3359 Test Methods for Measuring Adhesion by Tape Test
0
D 3980 Practice for Interlaboratory Testing of Paint and Related Materials
D 4214 Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films
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 July 10, 2003.June 1, 2008. Published August 2003.July 2008. Originally approved in 2001. Last previous edition approved in 2003 as
D 6695 - 03a.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
, Vol 06.02.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D6695–08
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 Description Typical Irradiance Typical Uses
C
Panel, Temperature
2
1 Continuous light 63 6 2°C 0.35 6 0.02 W/(m ·nm) at 340 nm General coatings and
2 G
102 min light only at 50 % 6 5% RH 145 6 4°F 41.5 6 2.5 W/m from 300-400 nm historical convention
F
18 min light and water spray
Repeat continuously
2
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.