本文件根据机械性能和材料能够承受的应力，对用于制造活塞环的材料进行分类。 本文件适用于直径小于等于200 mm的往复式内燃机活塞环。它也适用于在类似条件下工作的压缩机活塞环。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document classifies materials intended for the manufacture of piston rings, based on their mechanical properties and the stresses the materials are capable of withstanding. This document is applicable to piston rings for reciprocating internal combustion engines up to and including those of 200 mm in diameter. It is also applicable to piston rings of compressors working under similar conditions.All current amendments available at time of purchase are included with the purchase of this document.