承压用钢铸件

[中文适用范围]： 完整描述 本文件涵盖承压部件的钢铸件。它包括用于制造受压力容器规范约束的部件和不受规范约束的部件的材料。本文件涉及由非合金钢和合金钢等级制造的铸件（其化学成分如表 1 所示，机械性能如表 2、3、4 和 5 所示）。注：附件 D 提供了有关 ISO 等级名称和与 ISO 等级名称类似的可用 UNS 编号的信息。 [外文原描述]： This document covers steel castings for pressure containing parts. It includes materials which are used for the manufacture of components subject to pressure vessel codes and components not subject to codes. This document relates to castings manufactured from unalloyed and alloyed steel grades (characterized by their chemical composition given in Table 1, and mechanical properties in Tables 2, 3, 4 and 5). NOTE Annex D gives information on ISO grade designation and available UNS numbers which are similar to the ISO grade designation.