1.1 本指南涵盖了测量许多金属和无机涂层厚度的方法，包括电沉积、机械沉积、真空沉积、阳极氧化物和化学转化涂层。 1.2 本指南仅限于ASTM标准中考虑的测试，不包括用于特殊应用的某些测试。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 大多数涂层规范都规定了涂层的厚度，因为涂层厚度通常是在役涂层性能的一个重要因素。 3.2 本指南中包含的方法适用于验收测试，可在ASTM标准中找到。 3. 3. 每种方法在涂层类型和厚度方面都有其局限性。

1.1 This guide covers the methods for measuring the thickness of many metallic and inorganic coatings including electrodeposited, mechanically deposited, vacuum deposited, anodic oxide, and chemical conversion coatings. 1.2 This guide is limited to tests considered in ASTM standards and does not cover certain tests that are employed for special applications. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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 determine the applicability of regulatory limitations prior to use. 1.5 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. ====== Significance And Use ====== 3.1 Most coating specifications specify the thickness of the coating because coating thickness is often an important factor in the performance of the coating in service. 3.2 The methods included in this guide are suitable for acceptance testing and are to be found in ASTM standards. 3.3 Each method has its own limitations with respect to the kind of coating and its thickness.