Designation: D1005 -95 (Reapproved 2013) INTERNATIONAL Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers This standard is issued under the fixed designation D1005; 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 of Paint, Varnish, and Related Products on Test Panels D2370 Test Method for Tensile Properties of Organic Coat- 1.1 This test method covers the measurement of film thick- ness of dried films of paint, varnish, lacquer, and related ings products using micrometers. Procedures A and B utilize sta- tionary micrometers and Procedures C and D, hand-held 3. Significance and Use micrometers.ProceduresAandCarenotrecommendedfor 3.1 This test method is particularly applicable to the mea- films less than 12.5 μm (0.5 mils) in thickness. The minimum surement of free films and is also satisfactory for the measure- thickness required for Procedures B and D is a function of that ment of films on laboratory test panels. requiredtoenableremoval of the sampleasafreefilm 3.2 The accuracy and precision of the thickness measure- 1.2 The procedures appear as follows: ments may be influenced by the deformability of the coating. 1.2.1 Procedure A-Stationary micrometer for measuring coatings applied to plane rigid surfaces. deformable under the load of the measuring instrument. 1.2.2 Procedure BStationary micrometer for measuring 3.3 The accuracy and precision of the thickness measure- free films. 1.2.3 Procedure C-Hand-held micrometer for measuring ments are also influenced by the uniformity of the substrate coatings applied to plane rigid surfaces. when the coatings are applied to laboratory test panels. 1.2.4 Procedure D-Hand-held micrometer for measuring free films. 4.Apparatus 1.3 The values stated in SI units are to be regarded as the 4.1 Procedures A and B: standard. The values given in parentheses are for information 4.1.1 The apparatus shall consist of a dial comparator, dial only. indicator, or micrometer. A rigid base is required for mounting 1.4 This standard does not purport to address the safety thedial comparatoror dial indicatorgages.Thepresserfoot of concerns, if any, associated with its use. It is the responsibility themicrometer or dial indicator shall be circular,from1.5to of the user of this standard to establish appropriate safety and 3.0 mm (Vi6 to V/s in.) in diameter, and shall be flat on the health practices and determine the applicability of regulatory bottom. The presser foot shall be fixed to an indicator that reads limitations prior to use. to 2.5 μm (0.1 mil). The load on the presser foot shall be between 140 and 275 kPa (20 and 40 psi ). For Procedure B, a 2. Referenced Documents smooth uncoated test plate is also required. 2.1 ASTM Standards:2 4.1.2 Verify the accuracy of instrument calibration by set- D823 Practices for Producing Films of Uniform Thickness ting to zero with the anvils closed followed by measuring shims of known thicknesses or standards specifically designed for this purpose. Record the standard thickness gage measure- 1 This test method is under the jurisdiction of ASTM Committee DO1 on Paint ment and themicrometerreading.Usethese results to construct and Related Coatings, Materials, and Applications and is the direct responsibility of a calibration curve Subcommittee D01.23 on Physical Properties of Applied Paint Films 4.2 Procedures C and D-The apparatus shall consist of a Current edition approved July 1, 2013. Published July 2013. Originally approved in 1949. Last previous edition approved in 2007 as D1005-95 (2007). DOI: hand-held micrometer. The anvils of the micrometer shall be 10.1520/D1005-95R13. cir