ASTM D6206-03

Standard Practice for Sampling of Coating Films

SIGNIFICANCE AND USE
Specimens for analysis must be adequately sampled, packaged, and documented to obtain meaningful information from the laboratory. The sampling procedure and packaging will be dependent upon the reason for taking the sample.
SCOPE
1.1 This practice covers methods to remove samples of coating films for subsequent analysis related to identification of generic coating type and failure analysis or other reasons. These techniques can be used in the field, the fabricating shop, or laboratory.
1.2 The method for obtaining coating samples for heavy metal analysis is presented in Practice D 5702.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Jan-2003
• ICS: 25.220.99 - Other treatments and coatings
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.46 - Industrial Protective Coatings

Relations

• Replaces: ASTM D6206-97 - Standard Practice for Sampling of Coating Films
• Effective Date: 10-Jan-2003
• Replaced By: ASTM D6206-09 - Standard Practice for Sampling of Coating Films
• Effective Date: 01-Feb-2009
• Referred By: ASTM D5065-17(2021) - Standard Guide for Assessing the Condition of Aged Coatings on Steel Surfaces
• Effective Date: 10-Jan-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6206–03
Standard Practice for
1
Sampling of Coating Films
This standard is issued under the fixed designation D 6206; 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 Clean blades or knife between each sample with a rag soaked
in solvent, or change blades between each sample.
1.1 This practice covers methods to remove samples of
4.1.2 The number and location of samples will vary depend-
coatingfilmsforsubsequentanalysisrelatedtoidentificationof
ing upon the reason for sampling. Document the sampling
generic coating type and failure analysis or other reasons.
location prior to obtaining the sample. Measure and record dry
These techniques can be used in the field, the fabricating shop,
filmthicknesses.Ifdelaminationispresent,measureandrecord
or laboratory.
dry film thickness of the coating remaining in the delaminated
1.2 The method for obtaining coating samples for heavy
area as well as the intact area. Record the type of delamination,
metal analysis is presented in Practice D 5702.
that is, adhesive or cohesive, and the color of the coating
1.3 The values stated in SI units are to be regarded as the
layer(s) where the delamination occurred. Document any other
standard. The values given in parentheses are for information
visual defects such as alligatoring, mudcracking, checking,
only.
blistering, non–uniform appearance, or chalking.
1.4 This standard does not purport to address all of the
4.1.3 Obtain any history of the coating system available.
safety concerns, if any, associated with its use. It is the
This should include when the coating was applied, the type of
responsibility of the user of this standard to establish appro-
coating,andintendeddryfilmthicknesses.Obtainacopyofthe
priate safety and health practices and determine the applica-
painting, if possible, to verify the information.
bility of regulatory limitations prior to use.
4.1.4 Photograph the sample area before and after obtaining
2. Referenced Documents the sample.
4.1.5 Samples should be sent to the laboratory with a
2.1 ASTM Standards:
2
chain–of–custody form, especially if there are existing or
D 4840 Guide for Sampling Chain–of–Custody Procedures
potential legal ramifications to the results of the laboratory
D 5702 Practice for Field Sampling of Coating Films for
3
analysis.GuideD 4840presentstheminimumrequirementsfor
Analysis for Heavy Metals
sample chain–of–custody procedures.
3. Significance and Use
4.2 Peeling Paint or Paint with Poor Adhesion:
4.2.1 Samples should be taken that have not had both sides
3.1 Specimens for analysis must be adequately sampled,
exposed to the elements. Make an incision approximately 5 cm
packaged, and documented to obtain meaningful information
(2-in.) long in the coating using a sharp knife blade (such as a
from the laboratory. The sampling procedure and packaging
utility knife). Hold the blade at a low angle to the surface and
will be dependent upon the reason for taking the sample.
probe the incision by pushing forward on the knife. Alterna-
4. Procedure
tively, it may be possible to remove the sample by cutting a 5
cm (2-in.) square in the coating and peeling a sample by
4.1 General:
inserting the knife blade held at a low angle to the surface at
4.1.1 Contaminating samples must be avoided. Hands must
one of the edges of the incision. For brittle coatings, masking
be kept clean by washing or wearing protective covers such as
tape may be used to hold the film together during removal.
latex gloves. Contact the laboratory that will perform the
4.2.2 Obtain at least three samples, each sample being at
analysis to determine if any other precautions are needed.
least 5 cm (2-in.) square. Smaller samples are allowed ifa5cm
(2-in.) square piece cannot be removed. Ensure that the three
1 samples represent the same system. Place the samples in a
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
plastic bag, aluminum foil, or envelope. Mark the outside of
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.46 on Industrial Protective Coatings.
the bag or envelope with the identity of the sample, including
Current edition approved Jan. 10, 2003. Published May 2003. Originally
date, name of person taking the sample, project location, area
approved in 1997. Last previous edition approved in 1997 as D 6206 - 97.
2 location, and type of sample. Use a different container for each
Annual Book of ASTM Standards, Vol 11.01.
3
Annual Book of ASTM Standards, Vol 06.02. area sampled.
Copyright © ASTM International, 100 Barr Harbor
...