ISO 9328-1:2018

INTERNATIONAL ISO
STANDARD 9328-1
Fourth edition
2018-02
Steel flat products for pressure
purposes — Technical delivery
conditions —
Part 1:
General requirements
Produits plats en acier pour service sous pression — Conditions
techniques de livraison —
Partie 1: Exigences générales
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification and designation . 3
4.1 Classification . 3
4.2 Designation . 4
5 Information to be supplied by the purchaser. 4
5.1 Mandatory information . 4
5.2 Options . 4
6 Requirements . 5
6.1 Steelmaking process . 5
6.2 Delivery condition . 5
6.3 Chemical composition . 5
6.3.1 Cast (heat) analysis . 5
6.3.2 Product analysis . 5
6.4 Mechanical properties . 5
6.5 Surface condition . 6
6.6 Internal soundness . 6
6.7 Dimensions and tolerances on dimensions . 6
6.8 Calculation of mass . 6
7 Inspection . 6
7.1 Types of inspection and inspection documents . 6
7.2 Tests to be carried out . 7
7.3 Retests, sorting and reprocessing . 7
8 Sampling . 8
8.1 Frequency of testing . 8
8.2 Selection and preparation of samples and test pieces . 8
8.2.1 Sampling and sample preparation. 8
8.2.2 Preparation of test pieces. 8
9 Test methods . 9
9.1 Chemical analysis . 9
9.2 Tensile test at room temperature . 9
9.3 Tensile test at elevated temperature .10
9.4 Impact test .10
9.5 Other testing .10
10 Marking .11
Bibliography .16
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 10, Steel for
pressure purposes.
This fourth edition cancels and replaces the third edition (ISO 9328-1:2011), which has been technically
revised. The following changes have been made:
— all designations concerning thickness have been changed to “nominal thickness”;
— the thickness for test pieces for impact testing has been increased to 12 mm throughout;
— some references have been moved to the Bibliography;
— the content of the document has been generally updated.
A list of all the parts in the ISO 9328 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 9328-1:2018(E)
Steel flat products for pressure purposes — Technical
delivery conditions —
Part 1:
General requirements
1 Scope
This document specifies the general technical delivery conditions for steel flat products (plate/sheet
and strip) used principally for the construction of pressure equipment.
The general technical delivery requirements of ISO 404 also apply to products supplied in accordance
with this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 404, Steel and steel products — General technical delivery requirements
ISO 2566-1, Steel — Conversion of elongation values — Part 1: Carbon and low alloy steels
ISO 2566-2, Steel — Conversion of elongation values — Part 2: Austenitic steels
ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2:
Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing
sulfuric acid
ISO 4885, Ferrous products — Heat treatments — Vocabulary
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based
on chemical composition
ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main
quality classes and main property or application characteristics
ISO/TS 4949, Steel names based on letter symbols
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 6892-2, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature
ISO 6929, Steel products — Vocabulary
ISO 7452, Hot-rolled steel plates — Tolerances on dimensions and shape
ISO 7778, Through-thickness characteristics for steel products
ISO 7788, Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements
ISO 9034, Hot-rolled structural steel wide flats — Tolerances on dimensions and shape
ISO 9328-2:2018, Steel flat products for pressure purposes — Technical delivery conditions — Part 2: Non-
alloy and alloy steels with specified elevated temperature properties
ISO 9328-3, Steel flat products for pressure purposes — Technical delivery conditions — Part 3: Weldable
fine grain steels, normalized
ISO 9328-4, Steel flat products for pressure purposes — Technical delivery conditions — Part 4: Nickel-
alloy steels with specified low temperature properties
ISO 9328-5, Steel flat products for pressure purposes — Technical delivery conditions — Part 5: Weldable
fine grain steels, thermomechanically rolled
ISO 9328-6, Steel flat products for pressure purposes — Technical delivery conditions — Part 6: Weldable
fine grain steels, quenched and tempered
ISO 9328-7, Steel flat products for pressure purposes — Technical delivery conditions — Part 7: Stainless steels
ISO 9444-1, Continuously hot-rolled stainless steel — Tolerances on dimensions a
...