BS ISO 4991:2015涵盖承压部件的钢铸件。包括用于制造压力容器部件的材料 代码和不受代码约束的组件。本国际标准涉及由非合金和合金钢制成的铸件 （以表1中的化学成分和表2、3、4和5中的机械性能为特征）。注:附录D给出了ISO等级名称和可用UNS编号的信息，这些编号与 ISO等级名称。交叉引用:ISO 148-1ISO 4885ISO 4990ISO 6892-1ISO 6892-2ISO 11970ISO 13520EN 10027-1EN 10027-2EN 10213ASTM A217购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 4991:2015 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 International Standard relates to castings manufactured from unalloyed and alloyed steel grades (characterized by their chemical composition, Table 1, and mechanical properties, 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.Cross References:ISO 148-1ISO 4885ISO 4990ISO 6892-1ISO 6892-2ISO 11970ISO 13520EN 10027-1EN 10027-2EN 10213ASTM A217All current amendments available at time of purchase are included with the purchase of this document.