1.1 本规范涵盖了由尼龙或单体制造的挤压和铸造板材、板材、棒材和管状棒材（不包括管道和配件）的材料、尺寸、工艺和性能的要求和测试方法。 1.2 本规范中包含的特性是所涵盖组合物所需的特性。使用第节中给出的分类系统描述了识别对专业应用重要的特定特征所需的要求 4. . 1.3 本规范允许使用再生塑料（定义见指南 D7209 ). 1.4 以英制单位表示的数值视为标准值。括号中的值仅供参考。 1.5 以下预防性警告仅适用于本规范的试验方法部分。 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。 注1: 没有已知的ISO等效于本标准。 注2: 本规范旨在取代联邦标准LP-410A和PS 50 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 requirements and test methods for the material, dimensions, and workmanship, and the properties of extruded and cast sheet, plate, rod and tubular bar, excluding pipe and fittings, manufactured from nylon or monomers. 1.2 The properties included in this specification are those required for the compositions covered. Requirements necessary to identify particular characteristics important to specialized applications are described by using the classification system given in Section 4 . 1.3 This specification allows for the use of recycled plastics (as defined in Guide D7209 ). 1.4 The values stated in English units are regarded as standard. The values in parentheses are for information only. 1.5 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. Note 1: There is no known ISO equivalent to this standard. Note 2: This specification is intended to replace Federal Standard LP-410A and PS 50. 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.