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Significance and Use
4.1 Coating thickness is an important factor in the performance of a coating in service and is usually specified in a coating specification.
4.2 This method is suitable for acceptance testing.
1.1 This test method covers measurement of the local thickness of metal and oxide coatings by the microscopical examination of cross sections using an optical microscope.
1.2 Under good conditions, when using an optical microscope, the method is capable of giving an absolute measuring accuracy of 0.8 μm. This will determine the suitability of the method for measuring the thickness of thin coatings.
1.3 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. (This is especially applicable to the chemicals cited in Table X2.1.)
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E3 Guide for Preparation of Metallographic Specimens
ICS Number Code 17.040.20 (Properties of surfaces)
ASTM B487-85(2013), Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top