本SAE推荐的阀座镶块实践旨在向工程师、设计师和冶金学家提供以下信息:1阀座镶块设计的一般说明以及为什么需要它们。2推荐的压配合、安装程序以及镶块和沉孔的标准。3按类型、材料、，和用途。4典型插入材料的化学和机械性能。

This SAE recommended practice on seat inserts is presented to provide engineers, designers, and metallurgists with the following information:1A general description of seat insert design and why they are required.2Recommended press fits, installation procedures, and standards for inserts and counterbores.3A general classification of seat inserts by type, material, and use.4Chemical and mechanical properties of typical insert materials.