ISO 4991:2024Published

Steel castings for pressure purposes

Pièces moulées en acier pour service sous pression

Abstract / scope

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.

Life cycle

Replaces

ISO 4991:2015WithdrawnSteel castings for pressure purposesInternational Standard · Published 14 Dec 2015 · ISO/TC 17/SC 11