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Significance and Use
4.1 The dry film thickness of coatings on wood or wood-based products is specified in written product warranties for proper decorative and protective performance of coatings on wood or wood-based products.
4.2 The minimum and maximum dry film thickness of coatings is recommended by coating companies for satisfactory decorative and protective performance on wood or wood-based products.
4.3 The average dry film thickness of coatings on wood or wood-based material may be used by manufacturing companies to calculate theoretical cost of applied coatings. By comparison with actual cost, utilization efficiency may be calculated.
4.4 The ratio of peak to valley dry film thickness on textured products is used as an indication of coating uniformity.
4.5 Specific coated product requirements may dictate certain film thickness determinations to be made. Discussions between buyer and seller may be advisable to accommodate product needs relative to dry film thickness.
1.1 This test method covers the measurement of dry film thickness of coatings applied to a smooth, textured or curved rigid substrate of wood or a wood-based product
1.2 This test method covers the preparation of wood or wood-based specimens for the purpose of microscopical measurement of dry film thickness.
1.3 This test method suggests an interpretation of dry film thickness of coatings on wood or wood-based products when porous substrates are coated.
1.4 This test method suggests an interpretation of dry film thickness of coatings on wood or wood-based products when substrate attached or non-attached fibers occur in the dry film.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 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. Some specific hazards statements are given in Section 7 on Hazards.
ICS Number Code 17.040.20 (Properties of surfaces); 79.020 (Wood technology processes)
ASTM D5235-13, Standard Test Method for Microscopical Measurement of Dry Film Thickness of Coatings on Wood Products, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top