1.1 本指南不同于通常的ASTM标准，因为它不涉及特定测试。相反，它是针对特定铝合金系列的各种标准剥离试验方法的新用户的入门指南（参见术语 第193页 对于剥落的定义）。 1.2 本指南涵盖了在实验室加速环境和自然室外环境中对铝合金进行剥离试验的试样制备、暴露、检查和评估方面。目的是澄清现有测试方法中的任何差距。 1.3 以国际单位制表示的值应视为标准值。SI单位后括号中给出的值仅供参考，不视为标准值。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前建立适当的安全、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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 尽管有ASTM剥离测试方法，但它们集中于测试方法本身的特定程序。现有的测试方法不讨论可能影响性能的材料变量。同样，它们也没有解决确定之前从未测试过的合金加速试验的适用性的需要，也没有解决将加速试验的结果与室外大气中的试验以及- 使用性能。 4.2 本指南汇集了熟练从事剥离测试和评估所遇到损害的程度和重要性的研究人员的经验。重点是两个一般方面:提高获得可靠信息可能性的技术指南，以及避免可能导致错误结果和结论的陷阱的提示和程序。 4.3 考虑以下三个测试领域:从“收到”样品开始到最终试样制备的测试材料，腐蚀测试程序，包括测试选择、检查周期、终止点和评级程序，以及结果分析和报告方法。 4.4 本指南并非用于评估铝合金产品抗剥落性的特定腐蚀测试程序。 4.5 本指南不是规范的基础，也不是材料批次验收的指南。

1.1 This guide differs from the usual ASTM standard in that it does not address a specific test. Rather, it is an introductory guide for new users of various standard exfoliation test methods with consideration for specific aluminum alloy families (see Terminology G193 for definition of exfoliation). 1.2 This guide covers aspects of specimen preparation, exposure, inspection, and evaluation for conducting exfoliation tests on aluminum alloys in both laboratory accelerated environments and in natural, outdoor atmospheres. The intent is to clarify any gaps in existent test methods. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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 ====== 4.1 Although there are ASTM test methods for exfoliation testing, they concentrate on specific procedures for test methodology itself. Existent test methods do not discuss material variables that can affect performance. Likewise they do not address the need to establish the suitability of an accelerated test for alloys never previously tested nor the need to correlate results of accelerated tests with tests in outdoor atmospheres and with end-use performance. 4.2 This guide is a compilation of the experience of investigators skilled in the art of conducting exfoliation tests and assessing the degree and significance of the damage encountered. The focus is on two general aspects: guides to techniques that will enhance the likelihood of obtaining reliable information, and tips and procedures to avoid pitfalls that could lead to erroneous results and conclusions. 4.3 The following three areas of testing are considered: the test materials starting with the “as-received” sample up through final specimen preparation, the corrosion test procedures including choice of test, inspection periods, termination point, and rating procedures, and analyses of results and methods for reporting them. 4.4 This guide is not intended as a specific corrosion test procedure by which to evaluate the resistance to exfoliation of an aluminum alloy product. 4.5 This guide is not intended as a basis for specifications, nor as a guide for material lot acceptance.