ASTM D6486-01

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6486–01
Standard Practice for
Short Term Vehicle Service Exposure of Automotive
1
Coatings
This standard is issued under the fixed designation D 6486; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 714 Test Method for Evaluating Degree of Blistering of
2
Paint
1.1 This practice provides the protocol for vehicle service
D 823 Practices for Producing Films of Uniform Thickness
exposure testing of automotive coatings. Such exposure testing
2
of Paint, Varnish, and Related Products on Test Panels
is valuable for the verification of the performance of automo-
D 1005 Test Methods for Measurement of Dry Film Thick-
tive coatings and correlation with laboratory test data. Vehicle
2
ness of Organic Coatings Using Micrometers
service exposure is intended to provide short term (2 to 20
D 1186 Test Methods for Nondestructive Measurement of
weeks) exposure to the stress factors associated with vehicle
Dry Film Thickness of Nonmagnetic Coatings Applied to
operation. Factors included are scratch, mar, impact, stone
2
a Ferrous Base
chipping, insect impact, bird dropping, tree sap and staining,
D 1400 Test Method for Nondestructive Measurement of
environmental fallout, etc.
DryFilmThicknessofNonconductiveCoatingsAppliedto
2
NOTE 1—Vehicle service exposure is not intended to provide the
a Nonferrous Metal Base
conditions that are needed for characterizing the long term effects of
3
D 3170 Test Method for Chipping Resistance of Coatings
weathering or corrosion exposure.
D 3359 Test Methods for Measuring Adhesion by Tape
2
1.2 The exposure conditions are produced by the placement
Test
of multiple test panels of automotive finishes on automotive
D 5767 Test Methods for Instrumental Measurement of
2
test fleets that traverse a defined road course. Exposure to the
Distinctness-of-Image Gloss of Coating Surfaces
operating environment can be 20 h/day, 7 days/week allowing
2.2 U.S. Federal Standard:
4
for accumulation of over 100 000 miles in 10 weeks of
DOT NHTSA Reg. #49 CFR, Part 575
exposure.
1.3 The values stated in SI units are to be regarded as the 3. Terminology
standard. The values given in parentheses are for information
3.1 Definitions of Terms Specific to This Standard:
only.
3.1.1 blistering— formation in the film of dome-shaped,
1.4 This standard does not purport to address all of the
liquid- or gas-filled projections resulting from local loss of
safety concerns, if any, associated with its use. It is the
adhesion and lifting of the film from the previously applied
responsibility of the user of this standard to establish appro-
coating or the substrate.
priate safety and health practices and determine the applica-
3.1.2 chipping—removal of a coating, usually in small
bility of regulatory limitations prior to use.
pieces, resulting from impact by hard objects or from wear
during service.
2. Referenced Documents
3.1.3 cracking—formation of breaks in a film that extend
2.1 ASTM Standards:
throught to the underlying surface.
2
D 523 Test Method for Specular Gloss
3.1.4 distinctness-of-image-gloss—aspect of gloss charac-
D 609 Practice for Preparation of Cold-Rolled Steel Panels
terized by the sharpness of images of objects produced by
for Testing Paint, Varnish, Conversion Coatings, and
reflection at a surface.
2
Related Coating Products
3.1.5 gloss—angular selectivity of reflectance, involving
surface-reflected light, responsible for the degree to which
reflected highlights or images of objects may be seen as
superimposed on a surface.
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 D01.55 on Factory Applied Coatings on Preformed Products.
3
Current edition approved Jan. 10, 2000. Published March 2001. Originally Annual Book of ASTM Standards, Vol 06.02.
4
published as D 6486–99. Last previous edition D 6486–99. Available from the Superintendent of Documents, U.S. Government Printing
2
Annual Book of ASTM Standards, Vol 06.01. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6486
3.1.6 staining— discoloration, arising from foreign materi- 8. Procedure
als, that penetrates into the coating.
8.1 Prepare a minimum of two test panels per specimen
rack, in accordance with the coatings manufacturers specifica-
4. Significance and Use
tions, for the coatings to be evaluated. Prepare the test panels
4.1 Sincetheexposureofautomotivec
...