1.1 该分类系统涵盖了适用于注塑和挤出的热塑性聚酯材料。 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生产线标注（质量标准）中规定的要求。然而，所使用的再循环材料的比例以及任何污染物的性质和量实际上不能在本说明书中涵盖。 1.3 本标准中包括的性质是鉴定所涵盖的组合物所需的性质。识别对专门应用重要的特定特性所必需的其他要求，应使用第节中给出的后缀进行规定 5 . 1.4 该分类系统和随后的生产线标注（规范）旨在提供一种标注用于制造最终产品或零件的塑料材料的方法。它不用于材料的选择。只有在仔细考虑零件的设计和所需性能、所暴露的环境、所采用的制造工艺、所涉及的成本以及除本标准所涵盖的材料之外的材料的固有特性后，具有塑料领域专业知识的人员才能选择材料。 1.5 以SI单位表示的值应被视为标准。括号中给出的值仅供参考。 附注1: 本标准与ISO 7792-1:20 12和ISO 7792-2:20 12涉及相同的主题，但技术内容不同。 1.6 以下注意事项仅适用于试验方法部分，章节 11 该分类系统的: 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 1.7 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》中确立的国际公认的标准化原则制定的。

1.1 This classification system covers thermoplastic polyester materials suitable for injection molding and 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 the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this standard. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. Note 1: This standard and ISO 7792-1:2012 and ISO 7792-2:2012 address the same subject matter, but differ in technical content. 1.6 The following precautionary caveat pertains only to the test methods portion, Section 11 , of this classification system: 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. 1.7 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.