1.1 本试验方法包括薄锻造和铸造铝合金产品的单剪试验，以确定剪切极限强度。适用于太薄而无法根据测试方法进行测试的产品 B769 . 1.2 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI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。 1.4 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====== 5.1 本试验方法旨在提供一种测量薄铝合金锻造和铸造产品极限剪切强度的方法。人们认识到，该试验方法和大多数其他试验方法得出的荷载条件并不理想，因为它们不严格满足纯剪切的定义。然而，结构中很少存在纯剪切条件。 注1: 本试验方法的结果不能与试验方法中的结果互换 65美元 和 B769 通过该试验方法获得的抗剪强度与其他方法确定的值不同。 3.

1.1 This test method covers single shear testing of thin wrought and cast aluminum alloy products to determine shear ultimate strengths. It is intended for products that are too thin to be tested according to Test Method B769 . 1.2 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. 1.3 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 ====== 5.1 The intent of this test method is to provide a means of measuring the ultimate shear strength of thin aluminum alloy wrought and cast products. It is recognized that the loading conditions developed by this test method, and by most others, are not ideal in that they do not strictly satisfy the definitions of pure shear. However, rarely do pure shear conditions exist in structures. Note 1: Results from this test method are not interchangeable with results from Test Methods B565 and B769 . Shear strengths obtained by this test method have been shown to differ from values determined with other methods. 3