1.1 本规范涵盖了用作仪器和薄壁滚珠轴承保持架（保持架）的多孔层压酚醛材料所需的基本特性以及确定这些特性的方法。 1.2 表格- 薄板、轧管、模制管和杆是本规范所涵盖的层压材料的推荐形式。 1.3 预期用途- 根据本规范生产的材料拟用作滚珠轴承保持架（保持架）。温度范围限制为250 华氏度（117 °C）及以下。 1.4 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.5 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。 1.6 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。

1.1 This specification covers basic characteristics required for porous laminated phenolic materials intended for use as instrument and thin-section ball-bearing retainers (cages) and the methods of determining these characteristics. 1.2 Forms— Sheets, rolled tubes, molded tubes, and rods are recommended forms of laminated material covered by this specification. 1.3 Intended Use— Materials produced to this specification are intended for use as ball-bearing retainers (cages). Temperature range is limited to 250 °F (117 °C) and below. 1.4 Units— The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 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. 1.6 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.