本标准涵盖了汽车和相关工业中使用的铁素体、珠光体、回火珠光体和回火马氏体等可锻铸铁件的硬度和显微组织要求。铸件应经过热处理以符合本SAE标准。附录提供了有关可锻铸铁件应用及其化学成分的一般信息，以满足特定使用条件所需的硬度、微观结构和其他性能。附录中提供的机械性能用于设计目的。 具体牌号、硬度范围、最终热处理如表1所示。

This standard covers the hardness and microstructural requirements for malleable iron castings - ferritic, pearlitic, tempered pearlitic, and tempered martensitic grades used in automotive and allied industries. Castings shall be heat treated to meet this SAE Standard. The Appendix provides general information on the application of malleable iron castings and their chemical composition to meet hardness, microstructure, and other properties needed for particular service conditions. The mechanical properties in the Appendix are provided for design purposes. The specific grades, hardness range, and final heat treatment are shown in Table 1.