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1.1 This part of ������ϲʿ��� 9327 covers the technical delivery conditions for forgings (see note 1) and for rolled or forged

bars for pressure purposes manufactured from the following internationally used steels (see note 2):

a) non-alloy and alloy ferritic or martensitic steels with specified room temperature properties and supplementary

requirements for elevated temperature properties covered in ������ϲʿ��� 9327-2;

b) nickel steels with specified low temperature properties covered in ������ϲʿ��� 9327-3;

c) weldable fine grain steels with high proof strength (room temperature, elevated temperature and low

temperature grades) covered in ������ϲʿ��� 9327-4;

d) austenitic and austenitic-ferritic steels (room temperature and elevated temperature grades) covered in

������ϲʿ��� 9327-5.

NOTE 1 In accordance with ������ϲʿ��� 6929 the term forgings covers here open die forgings including ring rolled products as well

as closed die forgings.

NOTE 2 Additional to the internationally used steels for pressure purposes covered in parts 2 to 5 of ������ϲʿ��� 9327, there are

other steels used regionally or nationally for the same application. These other steels shall not be precluded by this

International Standard provided that they comply with the relevant International or National Standards for vessel constructions.

NOTE 3 The following International Standards also apply for steel products for pressure purposes: ������ϲʿ��� 9328 parts 1 to 5,

������ϲʿ��� 9329 parts1 to 4, ������ϲʿ��� 9330 parts 1 to 6, ������ϲʿ��� 4978.

1.2 In special cases variations of the requirements of this International Standard or additions to them may form the

subject of an agreement at the time of enquiry and order (see annex C).

1.3 In addition to the requirements of this International Standard the general technical delivery requirements in

������ϲʿ��� 404 apply, unless otherwise indicated in the following.