Draft International Standard
ISO/DIS 4991
Steel castings for pressure purposes
Reference number
ISO/DIS 4991
Edition 4
International Standard
Read sample
ISO/DIS 4991
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 4991:2015

ISO/DIS 4991

ISO/DIS 4991
CHF 63
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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.

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