ASTM D6625-13(2020)
(Practice)Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus
SIGNIFICANCE AND USE
3.1 Organic coatings on exterior exposure are subjected to attack by degrading elements of the weather, particularly ultraviolet light, oxygen, and water. This practice may be used for evaluating the protective behavior of polish film applied to a coating. This polish-coated coating is then exposed in an apparatus that produces ultraviolet radiation, temperature variation, and water condensation for a given time period.
3.2 No single light exposure apparatus, with or without water, can be specified as a direct simulation of natural exposure. This practice does not imply a specific correlation with outdoor exposure. It is, however, useful in screening the relative protective qualities of a polish within the test parameter.
SCOPE
1.1 This practice covers the selection of test conditions from Practice G53 to be employed for exposure testing of polish-coated paint, related coatings, and materials. This practice covers the basic principles and operating procedures for using fluorescent ultraviolet (UV) and condensation apparatus to simulate the deterioration caused by sunlight and water as rain or dew.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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
- Status
- Published
- Publication Date
- 30-Sep-2020
- Technical Committee
- D21 - Polishes
- Drafting Committee
- D21.04 - Performance Tests
Relations
- Effective Date
- 01-Jan-2014
- Effective Date
- 01-Jun-2008
- Effective Date
- 01-Feb-2008
- Effective Date
- 10-May-1999
Overview
ASTM D6625-13(2020), titled Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus, is a widely used international standard developed by ASTM International. This standard provides a systematic method for evaluating the protective qualities of polish films when applied to coated panels, simulating environmental weathering conditions. The practice helps manufacturers and quality professionals assess the performance and durability of polishes subjected to combined exposure of ultraviolet (UV) radiation, temperature variation, and water condensation.
Key Topics
- Performance Assessment: The standard outlines practical procedures for determining how well a polish protects underlying painted surfaces against damaging effects of UV light, oxidation, and moisture.
- Simulated Weathering: It employs fluorescent UV lamps and condensation cycles to replicate typical weathering found in natural outdoor exposures, allowing for accelerated laboratory testing.
- Gloss Measurement: The procedure includes the use of 60° glossmeters to quantitatively track gloss retention and loss, providing objective performance comparison across test polishes.
- Visual Evaluation: In addition to instrument readings, observations of visual changes to the paint surface after exposure cycles are required for comprehensive assessment.
- Test Parameters: The practice specifies test conditions, including temperature, relative humidity, and durations for both condensation and UV exposure stages.
Applications
ASTM D6625-13(2020) is relevant for:
- Automotive Industry: Used by car care product manufacturers and automotive paint suppliers to benchmark the protective performance of car polishes and waxes.
- Industrial Coatings: Applied in the evaluation of coatings for machinery, equipment, and exterior surfaces that require polish protection.
- Product Development: Supports R&D teams in comparing the effectiveness of different formulas and optimizing new polish products.
- Quality Control: Enables manufacturers to set performance criteria and perform routine quality assurance checks on batches of polish and coating products.
- Comparative Testing: Facilitates side-by-side performance screening of multiple polish products under controlled, repeatable conditions.
Key Benefits:
- Reduces time and variability compared to outdoor exposure testing.
- Provides clear, quantitative, and visual data for product claims.
- Enhances reliability and credibility of product performance data.
Related Standards
- ASTM D523: Test Method for Specular Gloss - used in this practice for gloss measurement.
- ASTM G53: Practice for Operating Light- and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) - forms the basis for test apparatus selection and operation.
- ISO and EN Standards: International equivalents may cover similar artificial weathering test methods for coatings and polishes.
- Other ASTM Polishes Standards: Additional standards exist for testing performance attributes such as abrasion resistance, cleaning efficacy, and durability under various exposure conditions.
Conclusion
ASTM D6625-13(2020) is an essential resource for organizations involved in developing, testing, and certifying polish products that safeguard painted and coated surfaces. By simulating combined UV and moisture stresses in a controlled laboratory environment, the standard enables effective screening and comparison of polish protective properties-supporting innovation, safety, and consumer confidence in coatings technology.
Keywords: ASTM D6625, polish protective properties, UV-condensation testing, painted panel, artificial weathering, car polish, gloss measurement, coatings durability, ASTM standards.
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Frequently Asked Questions
ASTM D6625-13(2020) is a standard published by ASTM International. Its full title is "Standard Practice for Conducting a Test of Protective Properties of Polish Applied to a Painted Panel Using Fluorescent UV-Condensation Light- and Water-Exposure Apparatus". This standard covers: SIGNIFICANCE AND USE 3.1 Organic coatings on exterior exposure are subjected to attack by degrading elements of the weather, particularly ultraviolet light, oxygen, and water. This practice may be used for evaluating the protective behavior of polish film applied to a coating. This polish-coated coating is then exposed in an apparatus that produces ultraviolet radiation, temperature variation, and water condensation for a given time period. 3.2 No single light exposure apparatus, with or without water, can be specified as a direct simulation of natural exposure. This practice does not imply a specific correlation with outdoor exposure. It is, however, useful in screening the relative protective qualities of a polish within the test parameter. SCOPE 1.1 This practice covers the selection of test conditions from Practice G53 to be employed for exposure testing of polish-coated paint, related coatings, and materials. This practice covers the basic principles and operating procedures for using fluorescent ultraviolet (UV) and condensation apparatus to simulate the deterioration caused by sunlight and water as rain or dew. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
SIGNIFICANCE AND USE 3.1 Organic coatings on exterior exposure are subjected to attack by degrading elements of the weather, particularly ultraviolet light, oxygen, and water. This practice may be used for evaluating the protective behavior of polish film applied to a coating. This polish-coated coating is then exposed in an apparatus that produces ultraviolet radiation, temperature variation, and water condensation for a given time period. 3.2 No single light exposure apparatus, with or without water, can be specified as a direct simulation of natural exposure. This practice does not imply a specific correlation with outdoor exposure. It is, however, useful in screening the relative protective qualities of a polish within the test parameter. SCOPE 1.1 This practice covers the selection of test conditions from Practice G53 to be employed for exposure testing of polish-coated paint, related coatings, and materials. This practice covers the basic principles and operating procedures for using fluorescent ultraviolet (UV) and condensation apparatus to simulate the deterioration caused by sunlight and water as rain or dew. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
ASTM D6625-13(2020) is classified under the following ICS (International Classification for Standards) categories: 19.020 - Test conditions and procedures in general; 87.020 - Paint coating processes. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D6625-13(2020) has the following relationships with other standards: It is inter standard links to ASTM D523-14, ASTM D523-08, ASTM D523-89(2008), ASTM D523-89(1999). Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D6625-13(2020) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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: D6625 − 13 (Reapproved 2020)
Standard Practice for
Conducting a Test of Protective Properties of Polish Applied
to a Painted Panel Using Fluorescent UV-Condensation
Light- and Water-Exposure Apparatus
This standard is issued under the fixed designation D6625; 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 3. Significance and Use
1.1 Thispracticecoverstheselectionoftestconditionsfrom 3.1 Organic coatings on exterior exposure are subjected to
Practice G53 to be employed for exposure testing of polish- attack by degrading elements of the weather, particularly
coated paint, related coatings, and materials. This practice ultraviolet light, oxygen, and water. This practice may be used
covers the basic principles and operating procedures for using for evaluating the protective behavior of polish film applied to
fluorescent ultraviolet (UV) and condensation apparatus to a coating. This polish-coated coating is then exposed in an
simulate the deterioration caused by sunlight and water as rain apparatus that produces ultraviolet radiation, temperature
or dew. variation, and water condensation for a given time period.
1.2 The values stated in SI units are to be regarded as 3.2 No single light exposure apparatus, with or without
standard. No other units of measurement are included in this water, can be specified as a direct simulation of natural
standard. exposure. This practice does not imply a specific correlation
with outdoor exposure. It is, however, useful in screening the
1.3 This standard does not purport to address all of the
relative protective qualities of a polish within the test param-
safety concerns, if any, associated with its use. It is the
eter.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Apparatus and Material
mine the applicability of regulatory limitations prior to use.
4.1 Fluorescent UV/Condensation Apparatus, complying
1.4 This international standard was developed in accor-
with Practice G53.
dance with internationally recognized principles on standard-
4.2 Glossmeter, using an angle of reflection of 60°. The
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- instrument and the reference standards shall conform to the
mendations issued by the World Trade Organization Technical requirements prescribed in Test Method D523.
Barriers to Trade (TBT) Committee.
4.3 Forced-air Oven.
4.4 Q Panel, approximately 7.5 by 15 cm aluminum.
2. Referenced Documents
4.5 Base Paint Coating—should be a red paint that gives
2.1 ASTM Standards:
100 % loss in gloss after being exposed to the test in this
D523 Test Method for Specular Gloss
practice.ApplythispainttothealuminumQpanelaccordingto
G53 Practice for Operating Light-and Water-Exposure Ap-
the instructions on the spray can.Allow paint coating to air dry
paratus (Fluorescent UV-Condensation Type) for Expo-
3 for 24 h followed by2hof drying in a forced-air oven at 50°C.
sure of Nonmetallic Materials (Withdrawn 2000)
4.6 Polishing and Application Cloth— shall be the same
size and type for each sample tested. Separate cloths shall be
used for each polish and for the application step and buffing
This practice is under the jurisdiction of ASTM Committee D21 on Polishes
step. Materials such as washed cheesecloth, rumple cloth,
and is the direct responsibility of Subcommittee D21.04 on Performance Tests.
Current edition approved Oct. 1, 2020. Published October 2020. Originally
flannel, cotton diaper cloth, and nonwoven fabrics are suitable
approved in 2001. Last previous edition approved in 2013 as D6625 - 13. DOI:
for this purpose. Felt or paper shall not
...




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