SAE ISTC第35分部的一个小组委员会编写了本报告，旨在为汽车工程师和设计师提供排气歧管使用的设计考虑因素和高温材料可用性的基本理解。希望本手册能简要介绍适用于本应用的铸造和锻造铁质材料的重要特性，以及制造方法。讨论了当前发动机设计中使用的不同类型的歧管及其适用范围。最后，概述了常用合金的机械、化学和热物理性能，并讨论了这些性能的重要性。

A subcommittee within SAE ISTC Division 35 has written this report to provide automotive engineers and designers a basic understanding of the design considerations and high temperature material availability for exhaust manifold use. It is hoped that it will constitute a concise reference of the important characteristics of selected cast and wrought ferrous materials available for this application, as well as methods employed for manufacturing. The different types of manifolds used in current engine designs are discussed, along with their range of applicability. Finally, a general description of mechanical, chemical, and thermophysical properties of commonly-used alloys is provided, along with discussions on the importance of such properties.