1.1 这些测试方法涵盖了金属箔在室温下的拉伸测试。在特定材料的个别规范或测试方法中，可能需要对这些方法进行例外处理。 1.2 单位-- 以国际单位制表示的值应被视为标准值。括号中给出的值是英寸-磅单位的数学转换，仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 拉伸试验提供了材料在单轴拉伸应力下的强度和延展性信息。这些信息可能有助于比较材料、合金开发、质量控制和设计。 4.2 零件或材料选定部分的拉伸试验结果通常不能完全代表其在不同环境中使用行为的整个最终产品的强度和延展性。 4.3 这些测试方法被认为对商业货物的验收测试是令人满意的，因为这些方法已被广泛用于这些目的。 4.4 拉伸试验提供了一种通过测量伸长率或断面收缩率来确定材料延展性的方法。 然而，随着试样厚度的减小，拉伸试验在确定延展性方面往往变得不那么有用。 4.5 不同行业区分不同厚度的箔和片材。 注1: 2013年，为了与国际标准相协调，铝业协会修订了箔的定义，将厚度小于或等于0.2毫米（0.008英寸）的箔包括在内。 4.6 本标准与试验方法不同 E8/E8M 以及ISO 6892-1，因为它允许通过称重来确定试样厚度( 7.2 )并测定某些试样的抓握分离伸长率( 7.8 ). 4.7 本标准不可能为每种可能的合金定义厚度范围，其中应使用本标准代替试验方法 E8/E8M 或其他拉伸试验标准。 通过称重测量试样厚度，可以获得特定合金和厚度的优异结果( 7.2 )以避免损坏材料并获得足够的精度。此外，在接触试样或划线量规标记的传统伸长计可能损坏试样或影响测试结果的情况下，对于给定的合金和厚度，确定夹具分离的伸长率是可以接受的。

1.1 These test methods cover the tension testing of metallic foil at room temperature. Exception to these methods may be necessary in individual specifications or test methods for a particular material. 1.2 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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 Tension tests provide information on the strength and ductility of materials under uniaxial tensile stresses. This information may be useful in comparisons of materials, alloy development, quality control, and design. 4.2 The results of tension tests from selected portions of a part or material often do not totally represent the strength and ductility of the entire end product of its in-service behavior in different environments. 4.3 These test methods are considered satisfactory for acceptance testing of commercial shipments, since the methods have been used extensively for these purposes. 4.4 Tension tests provide a means to determine the ductility of materials through the measurement of elongation or reduction of area. However, as specimen thickness is reduced, tension tests often become less useful for determining ductility. 4.5 Different industries differentiate between foil and sheet at different thicknesses. Note 1: In 2013, to harmonize with international standards, the Aluminum Association revised its definition of foil to include thicknesses less than or equal to 0.2 mm (0.008 in.). 4.6 This standard differs from Test Methods E8/E8M and ISO 6892-1 in that it permits determining the specimen thickness by weighing ( 7.2 ) and determining the elongation from grip separation for some specimens ( 7.8 ). 4.7 It is impossible for this standard to define the thickness range for every possible alloy where this standard should be used instead of Test Methods E8/E8M or other tensile test standards. Superior results for a specific alloy and thickness could be obtained by measuring the specimen thickness by weighing ( 7.2 ) to avoid damaging the material and to obtain sufficient accuracy. In addition, it may be acceptable for a given alloy and thickness to determine the elongation from grip separation in cases where conventional extensometers that contact the specimen or scribed gauge marks could damage the specimen or affect the test results.