1.1 该分类体系涵盖适用于成型或挤压的热塑性聚酯材料。 1.2 该分类系统允许使用回收的热塑性聚酯材料，前提是满足该分类系统和后续线形标注（规范）中规定的要求。然而，本规范实际上无法涵盖所用回收材料的比例以及任何污染物的性质和数量。 1.3 本标准中包含的特性是识别所涵盖成分所需的特性。识别对专业应用重要的特殊特性所需的其他要求将通过使用第节中给出的后缀来指定 5. . 1.4 该分类系统和随后的线形标注（规范）旨在提供一种方法，指出用于制造成品或零件的塑料材料。 它不用于选择材料。只有在仔细考虑零件所需的设计和性能、零件将暴露的环境、要使用的制造工艺、所涉及的成本以及材料的固有特性（本规范所涵盖的特性除外）后，才可以由在塑料领域具有专业知识的人员进行材料选择。 1.5 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.6 以下危险警告仅适用于测试方法部分第节 11 ，本规范: 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和健康实践，并确定监管限制的适用性。 注1: 本标准与ISO 7792-1:2012和ISO 7792-2:2012的主题相同，但技术内容不同。

1.1 This classification system covers thermoplastic polyester materials suitable for molding or extrusion. 1.2 This classification system allows for the use of recycled thermoplastic polyester materials provided that the requirements as stated in this classification system and subsequent line callout (specification) are met. The proportions of recycled material used, as well as the nature and amount of any contaminant, however, cannot be covered practically in this specification. 1.3 The properties included in this standard are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be specified by using the suffixes as given in Section 5 . 1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastic field only after careful consideration of the design and performance required of the part, the environment to which it will be exposed, the fabrication process to be used, the costs involved, and the inherent properties of the material other than those covered by this specification. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.6 The following hazards caveat pertains only to the test methods portion, Section 11 , 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 and health practices and determine the applicability of regulatory limitations prior to use. Note 1: This standard and ISO 7792-1:2012 and ISO 7792-2:2012 address the same subject matter, but differ in technical content.