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ASTM D1005-95(2001)

(Test Method)

Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers

Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers

SIGNIFICANCE AND USE
This test method is particularly applicable to the measurement of free films and is also satisfactory for the measurement of films on laboratory test panels.
The accuracy and precision of the thickness measurements may be influenced by the deformability of the coating. This test method is not applicable to coatings that are readily deformable under the load of the measuring instrument.
The accuracy and precision of the thickness measurements are also influenced by the uniformity of the substrate when the coatings are applied to laboratory test panels.
SCOPE
1.1 This test method covers the measurement of film thickness of dried films of paint, varnish, lacquer, and related products using micrometers. Procedures A and B utilize stationary micrometers and Procedures C and D, hand-held micrometers. Procedures A and C are not recommended for films less than 0.5 mils (12.5 µm) in thickness. The minimum thickness required for Procedures B and D is a function of that required to enable removal of the sample as a free film.  
1.2 The procedures appear as follows:  
1.2.1 Procedure A--Stationary micrometer for measuring coatings applied to plane rigid surfaces.  
1.2.2  Procedure B--Stationary micrometer for measuring free films.  
1.2.3  Procedure C--Hand-held micrometer for measuring coatings applied to plane rigid surfaces.  
1.2.4 Procedure D --Hand-held micrometer for measuring free films.
1.3 The values stated in inch-pound 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 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
31-Dec-2000
ICS
25.220.60 - Organic coatings
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.23 - Physical Properties of Applied Paint Films
Current Stage
Ref Project

Relations

Replaces
ASTM D1005-95 - Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
Effective Date
01-Jan-2001
Replaced By
ASTM D1005-95(2007) - Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
Effective Date
01-Nov-2007
Referred By
ASTM D6903-07(2020) - Standard Test Method for Determination of Organic Biocide Release Rate From Antifouling Coatings in Substitute Ocean Water
Effective Date
01-Jan-2001
Referred By
ASTM D3794-22 - Standard Guide for Testing Coil Coatings
Effective Date
01-Jan-2001
Referred By
ASTM D6037-21 - Standard Test Methods for Dry Abrasion Mar Resistance of High Gloss Coatings
Effective Date
01-Jan-2001
Referred By
ASTM D1474/D1474M-13(2023) - Standard Test Methods for Indentation Hardness of Organic Coatings
Effective Date
01-Jan-2001
Referred By
ASTM D7394-18(2023) - Standard Practice for Rheological Characterization of Architectural Coatings using Three Rotational Bench Viscometers
Effective Date
01-Jan-2001
Referred By
ASTM D4366-16(2021) - Standard Test Methods for Hardness of Organic Coatings by Pendulum Damping Tests
Effective Date
01-Jan-2001
Referred By
ASTM D6695-16 - Standard Practice for Xenon-Arc Exposures of Paint and Related Coatings
Effective Date
01-Jan-2001
Referred By
ASTM E1797-12(2017)e1 - Standard Specification for Reinforced Liquid Coating Encapsulation Products for Leaded Paint in Buildings
Effective Date
01-Jan-2001
Referred By
ASTM D2803-09(2020) - Standard Guide for Testing Filiform Corrosion Resistance of Organic Coatings on Metal
Effective Date
01-Jan-2001
Referred By
ASTM D2197-16(2022) - Standard Test Method for Adhesion of Organic Coatings by Scrape Adhesion
Effective Date
01-Jan-2001
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
01-Jan-2001
Referred By
ASTM D3451-06(2017) - Standard Guide for Testing Coating Powders and Powder Coatings
Effective Date
01-Jan-2001
Referred By
ASTM D3170/D3170M-14(2022) - Standard Test Method for Chipping Resistance of Coatings
Effective Date
01-Jan-2001

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ASTM D1005-95(2001) - Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using MicrometersASTM D1005-95(2001) - Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
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ASTM D1005-95(2001) - Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
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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:D1005–95 (Reapproved 2001)
Standard Test Method for
Measurement of Dry-Film Thickness of Organic Coatings
Using Micrometers
This standard is issued under the fixed designation D 1005; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D 2370 Test Method for Tensile Properties of Organic
Coatings
1.1 This test method covers the measurement of film thick-
ness of dried films of paint, varnish, lacquer, and related
3. Significance and Use
products using micrometers. Procedures A and B utilize sta-
3.1 This test method is particularly applicable to the mea-
tionary micrometers and Procedures C and D, hand-held
surement of free films and is also satisfactory for the measure-
micrometers. Procedures A and C are not recommended for
ment of films on laboratory test panels.
films less than 12.5 µm ( 0.5 mils) in thickness. The minimum
3.2 The accuracy and precision of the thickness measure-
thickness required for Procedures B and D is a function of that
ments may be influenced by the deformability of the coating.
required to enable removal of the sample as a free film.
This test method is not applicable to coatings that are readily
1.2 The procedures appear as follows:
deformable under the load of the measuring instrument.
1.2.1 Procedure A—Stationary micrometer for measuring
3.3 The accuracy and precision of the thickness measure-
coatings applied to plane rigid surfaces.
ments are also influenced by the uniformity of the substrate
1.2.2 Procedure B—Stationary micrometer for measuring
when the coatings are applied to laboratory test panels.
free films.
1.2.3 Procedure C—Hand-held micrometer for measuring
4. Apparatus
coatings applied to plane rigid surfaces.
4.1 Procedures A and B:
1.2.4 Procedure D—Hand-held micrometer for measuring
4.1.1 The apparatus shall consist of a dial comparator, dial
free films.
indicator, or micrometer.Arigid base is required for mounting
1.3 The values stated in SI units are to be regarded as the
the dial comparator or dial indicator gages. The presser foot of
standard. The values given in parentheses are for information
the micrometer or dial indicator shall be circular, from 1.5 to
only.
1 1
3.0 mm ( ⁄16 to ⁄8 in.) in diameter, and shall be flat on the
1.4 This standard does not purport to address the safety
bottom.Thepresserfootshallbefixedtoanindicatorthatreads
concerns, if any, associated with its use. It is the responsibility
to 2.5 µm (0.1 mil). The load on the presser foot shall be
of the user of this standard to establish appropriate safety and
between 140 and 275 kPa (20 and 40 psi ). For Procedure B, a
health practices and determine the applicability of regulatory
smooth uncoated test plate is also required.
limitations prior to use.
4.1.2 Verify the accuracy of instrument calibration by set-
2. Referenced Documents ting to zero with the anvils closed followed by measuring
shims of known thicknesses or standards specifically designed
2.1 ASTM Standards:
for this purpose. Record the standard thickness gage measure-
D 823 Practices for Producing Films of Uniform Thickness
2 mentandthemicrometerreading.Usetheseresultstoconstruct
of Paint, Varnish, and Related Products on Test Panels
a calibration curve.
4.2 Procedures C and D—The apparatus shall consist of a
hand-held micrometer. The anvils of the micrometer shall be
This test method is under the jurisdiction of ASTM Committee D01 on Paint
1 1
and Related Coatings, Materials, andApplications and is the direct responsibility of
circular, from 1.5 to 3.0 mm ( ⁄16 to ⁄8 in.) in diameter, with flat
Subcommittee D01.23 on Physical Properties of Applied Paint Films.
bottoms. Verify the accuracy of instrument calibration by
Current edition approved Feb. 15, 1995. Published April 1995. Originally
e1 setting to zero with the anvils closed followed by measuring
published 1949. Last previous edition D 1005 – 84 (1990) .
Annual Book of ASTM Standards, Vol 06.01. shims of known thicknesses or standards specifically designed
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D1005
for this purpose. Record the standard thickness gage measure-
mentandthemicrometerreading.Usetheseresultstoconstruct
a calibration curve.
5. Test Specimen
5.1 Procedures A and C—Apply test films to a suitable
plane, rigid base material from which the dried film may be
satisfactorily removed. The panels shall be of sufficient size to
permit film thickness measurements to be made 25 mm (1 in.)
from any edge.
5.1.1 Coatings should be applied in accordance with Prac-
tices D 823 or as agreed upon between the purchaser and the
seller.
5.2 Procedures B and D—Free films of the test material are
required. Alternatively, the test materials can be applied to an
appropriate substrate in order that they can be removed as free
films without deformation. If the method of specimen prepa-
ration affects the film forming properties of the test material or
FIG. 1
requires cutting or scraping to remove the free film, use
Procedures A or C instead.
5.2.1 Free films may be prepared in accordance with Test
Method D 2370.
taken. Close the gage slowly with care not to distort the film
and take a reading, estimating to 2.5 µm (0.1 mil).
6. Procedure
6.2.4 The difference in the gage readings is the thickness of
6.1 Procedure A:
the film. Record to 2.5 µm (0.1 mil).
6.1.1 Mount the test panel rigidly on a suitable base. Clamp
6.2.5 When conditions permit, perform a minimum of three
or hold it to the base in such a way that there will be no
determinations adjacent to one another on each film.
movement or spring of the panel during the film thickness
6.3 Procedure C:
measurement.
6.3.1 Hold the hand-held micrometer in such a manner that
6.1.2 Close the gage slowly until contact is made, but
the micrometer can be steadied against a film surface. Separate
without visible distortion of the film. Read the gage, estimating
the micrometer anvils to a distance at least twice that of the
to 2.5 µm (0.1 mil), and record the reading.
film thickness to be measured.
6.1.3 Open the gage and remove the film carefully from the
6.3.2 Place the coated base material between anvil contacts.
area where the measurement was taken. Any suitable means,
Be sure to align the panel so that it is perpendicular to the
chemical or mechanical, may be used to remove the film,
contact points. Carefully bring the micrometer anvil into
taking care not to distort the panel. Close the gage, slowly on
contact with the film by releasing the spring tension or rotating
the area from which the film was removed, and take a reading,
...

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5.1 Stresses in coatings arise as a result of their shrinkage or expansion if expected movements are prevented by coating adhesion to its substrate.  
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5.3 Knowledge of the internal stresses in coatings is very important because they may effect coating performance and service life. If the internal stress exceeds the tensile strength of the film, cracks are formed. If stress exceeds adhesion between coating and substrate, it will reduce adhesion and can lead to delamination of coatings. Quantitative information about stresses in coatings can be useful in coating formulation and recommendations for their application and use.  
5.4 This method has been found useful for air-dry industrial organic coatings but the applicability has not yet been assessed for thin coatings (thickness
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1.1 This test method covers the procedure for measurements of internal stresses in organic coatings by using the cantilever (beam) method.  
1.2 This method is appropriate for the coatings for which the modulus of elasticity of substrate (Es) is significantly greater than the modulus of elasticity of coating (Ec) and for which the thickness of substrate is significantly greater than thickness of coating (see Note 7 and Note 8).  
1.3 The stress values are limited by the adhesion values of coating to the substrate and by the tensile strength of the coating, or both.  
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.5 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 to determine the applicability of regulatory limitations prior to use.  
1.6 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.

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