ASTM D6132-13

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Designation: D6132 − 13
Standard Test Method for
Nondestructive Measurement of Dry Film Thickness of
Applied Organic Coatings Using an Ultrasonic Coating
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Thickness Gage
This standard is issued under the fixed designation D6132; 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* D1005 Test Method for Measurement of Dry-Film Thick-
ness of Organic Coatings Using Micrometers
1.1 This test method describes the use of ultrasonic film
D4138 Practices for Measurement of Dry Film Thickness of
thicknessgagestomeasureaccuratelyandnondestructivelythe
Protective Coating Systems by Destructive, Cross-
dry film thickness of organic coatings applied over a substrate
Sectioning Means
of dissimilar material. Measurements may be made on field
E177 Practice for Use of the Terms Precision and Bias in
structures, on commercially manufactured products, or on
ASTM Test Methods
laboratory test specimens. These types of gages can accurately
E691 Practice for Conducting an Interlaboratory Study to
measure the dry film thickness of organic coatings on a variety
Determine the Precision of a Test Method
of substrates such as concrete, wood, wallboard, plastic, fiber
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2.2 SSPC—The Society for Protective Coatings Standards:
composites and metal.
PA 2 Procedure for Determining Conformance to Dry Coat-
1.2 This test method is not applicable to coatings that will
ing Thickness Requirements
be readily deformable under load of the measuring instrument
PA 9 Measurement of Dry Organic Coating Thickness on
astheinstrumentprobeisplaceddirectlyonthecoatingsurface
Cementitious Substrates Using Ultrasonic Gages
to take a reading.
2.3 ASME—The American Society of Mechanical Engi-
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neers:
1.3 The effective range of instruments using the principle of
ultrasonicsislimitedbygagedesign.Athicknessrangeof8µm B46.1 Surface Texture (Surface Roughness, Waviness, and
Lay)
to 7.60 mm (0.3 to 300 mils) has been demonstrated.
1.4 The values stated in SI units are to be regarded as
3. Terminology
standard. No other units of measurement are included in this
3.1 Definitions of Terms Specific to This Standard:
standard.
3.1.1 accuracy, n—the measure of the magnitude of error
1.5 This standard does not purport to address the safety
between the result of a measurement and the true thickness of
concerns, if any, associated with its use. It is the responsibility
the item being measured.
of the user of this standard to establish appropriate safety and
3.1.1.1 Discussion—An accuracy statement predicts the
health practices and determine the applicability of regulatory
abilityofacoatingthicknessgagetomeasurethetruethickness
limitations prior to use.
of a coating to be measured. Accuracy statements provide the
performance capability across the full functional measurement
2. Referenced Documents
range of the gage. Accuracy statements frequently include a
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2.1 ASTM Standards:
fixed portion that remains constant across the measurement
D823 Practices for Producing Films of Uniform Thickness
range,plusavariableportionthatisrelatedtothemeasurement
of Paint, Varnish, and Related Products on Test Panels
result for a particular thickness.
3.1.2 adjustment, n—the physical act of aligning a gage’s
thickness readings to match those of a known thickness sample
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This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of (removal of bias), in order to improve the accuracy of the gage
Subcommittee D01.23 on Physical Properties of Applied Paint Films.
on a specific coating.
Current edition approved Nov. 1, 2013. Published December 2013. Originally
approved in 1997. Last previously edition approved in 2008 as D6132 – 08. DOI:
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10.1520/D6132-13. Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Pittsburgh, PA 15222-4656, http://www.sspc.org.
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
*A Summary of Changes section appears at the end of this standard
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D6132 − 13
3.1.2.1 Discussion—An adjustment will affect the outcome greater
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