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ASTM D 4138 : 2007 : REV A : R2013

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

07-01-2013

CONTAINED IN VOL. 06.01, 2018 Describes the measurement of dry film thickness of coating films by microscopic observation of precision angular cuts in the coating film.

1.1This practice describes the measurement of dry film thickness of coating films by microscopic observation of precision angular cuts in the coating film. Use of these procedures may require repair of the coating film. This practice is intended to supplement the manufacturers' instructions for the manual operation of the gages and is not intended to replace them. It includes definitions of key terms, reference documents, the significance and use of the practice, and the advantages and limitations of the instruments.

1.2Three procedures are provided for measuring dry film thickness of protective coating systems:

1.2.1Procedure A—Using groove cutting instruments.

1.2.2Procedure B—Using grinding instruments.

1.2.3Procedure C—Using drill bit instruments.

1.3These procedures are not applicable for soft or ductile substrates that may deform under the test gage cutting tip. The substrate should be sufficiently rigid to prevent deformation of the coating during the cutting process. The surface may be flat or moderately curved. Pipes as small as 25 mm (1 in.) in diameter may be measured in the axial direction.

1.4Individual coats in a multicoat system where there is a discernible visual difference between coats or the overall thickness of a coating system can be measured by these procedures.

1.5The range of thickness measurement is typically 2 to 2000 microns (0.1 to 80 mils) and depends upon the cutting angle of the blade.

1.6The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.7This 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.

Committee
D 01
DocumentType
Standard Practice
Pages
6
ProductNote
Reconfirmed 2013
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 6943 : 2015 Standard Practice for Immersion Testing of Industrial Protective Coatings and Linings
ASTM A 1003/A1003M : 2015 Standard Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members
ASTM D 2134 : 1993 : R2012 Standard Test Method for Determining the Hardness of Organic Coatings with a Sward-Type Hardness Rocker
ASTM D 5498 : 2012 : REV A : R2018 Standard Guide for Developing a Training Program for Personnel Performing Coating and Lining Work Inspection for Nuclear Facilities
ASTM D 4752 : 2010 : R2015 Standard Practice for Measuring MEK Resistance of Ethyl Silicate (Inorganic) Zinc-Rich Primers by Solvent Rub
ASTM D 6137 : 1997 : R2018 Standard Test Method for Sulfuric Acid Resistance of Polymer Linings for Flue Gas Desulfurization Systems
ASTM D 6577 : 2015 Standard Guide for Testing Industrial Protective Coatings
ASTM D 5702 : 2018 Standard Practice for Field Sampling of Coating Films for Analysis for Heavy Metals
ASTM D 3276 : 2015 : EDT 1 Standard Guide for Painting Inspectors (Metal Substrates)
ASTM D 7378 : 2016 Standard Practice for Measurement of Thickness of Applied Coating Powders to Predict Cured Thickness
ASTM D 5402 : 2019 Standard Practice for Assessing the Solvent Resistance of Organic Coatings Using Solvent Rubs
ASTM D 6237 : 2009 : R2015 Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
ASTM D 6132 : 2013 : R2017 Standard Test Method for Nondestructive Measurement of Dry Film Thickness of Applied Organic Coatings Using an Ultrasonic Coating Thickness Gage
ASTM D 6677 : 2018 Standard Test Method for Evaluating Adhesion by Knife
ASTM D 3794 : 2018 Standard Guide for Testing Coil Coatings

ASTM D 823 : 1995 Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
ASTM D 7091 : 2013 : REDLINE Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous Metals

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