1.1 本规范涵盖核应用的真空熔炼锆和锆合金锭。 1.2 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，国际单位显示在括号中。每个系统中规定的值不是精确的等价物；因此，每个系统应相互独立使用。合并两个系统的值可能会导致不符合规范。 1.3 以下预防性警告仅适用于本规范的试验方法部分:本标准无意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。 1.4 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《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====== 10.1 为了确定是否符合表1所列财产要求的规定限值 表1 和 表2 ，观察值或计算值应按照实践中的舍入方法进行舍入 E29年 .

1.1 This specification covers vacuum-melted zirconium and zirconium alloy ingots for nuclear application. 1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. 1.3 The following precautionary caveat pertains only to the test method portions of this specification: 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 ====== 10.1 For purposes of determining compliance with the specified limits for requirements of the properties listed in Table 1 and Table 2 , an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 .