Steel flat products for pressure purposes — Technical delivery conditions — Part 1: General requirements

ISO 9328-1:2018 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.

Produits plats en acier pour service sous pression — Conditions techniques de livraison — Partie 1: Exigences générales

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Status
Published
Publication Date
31-Jan-2018
Current Stage
6060 - International Standard published
Start Date
01-Feb-2018
Completion Date
01-Feb-2018
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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 9328-1:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 9328-1:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO 9328-1:2018(E)
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

© ISO 2018 – All rights reserved iii
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ISO 9328-1:2018(E)
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
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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 2018 – All rights reserved 1
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ISO 9328-1:2018(E)

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 and form — Part 1: Narrow

strip and cut lengths

ISO 9444-2, Continuously hot-rolled stainless steel — Tolerances on dimensions and form — Part 2: Wide

strip and sheet/plate

ISO 9445-1, Continuously cold-rolled stainless steel — Tolerances on dimensions and form — Part 1: Narrow

strip and cut lengths

ISO 9445-2, Continuously cold-rolled stainless steel — Tolerances on dimensions and form — Part 2: Wide

strip and plate/sheet
ISO 10474, Steel and steel products — Inspection documents

ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical

composition

ISO 17577, Steel — Ultrasonic testing of steel flat products of thickness equal to or greater than 6 mm

ISO 18286, Hot-rolled stainless steel plates — Tolerances on dimensions and shape

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4885, ISO 4948-1, ISO 4948-2

and ISO 6929 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp

NOTE 1 In addition to the definitions for thermomechanical treatment and quenching and tempering in

ISO 4885, the following is noted:

a) thermomechanical rolling (symbol M) can include processes of increased cooling rates with or without

tempering, including self-tempering but definitively excluding direct quenching and tempering;

b) quenching and tempering (symbol QT) also includes direct quenching plus tempering.

NOTE 2 In international publications, for normalizing rolling and thermomechanical rolling the expression

“controlled rolling” can be found. However, in view of the different applications of the products, it is necessary to

make a distinction between the terms.
2 © ISO 2018 – All rights reserved
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ISO 9328-1:2018(E)
3.1
normalizing rolling

rolling process in which the final deformation process is carried out in a certain temperature range,

leading to a material condition equivalent to that obtained after normalizing so that the specified

values of the mechanical properties are retained even after normalizing
Note 1 to entry: For explanation, see Figure 1.

Note 2 to entry: The symbol for this delivery condition and for the normalized condition is N.

Key
T temperature, in degrees Celsius
t time, in hours
A temperature at which ferrite starts to form on cooling
a recrystallized austenite region
b non-recrystallized austenite region
c austenite plus ferrite region
Figure 1 — Time-temperature scheme of normalizing rolling
3.2
purchaser
person or organization that orders products in accordance with this document

Note 1 to entry: The purchaser is not necessarily, but may be, a manufacturer of pressure equipment.

4 Classification and designation
4.1 Classification

4.1.1 The classification of the steel grades in accordance with ISO 4948-1 and ISO 4948-2 is given in

ISO 9328-2, ISO 9328-3, ISO 9328-4, ISO 9328-5, ISO 9328-6 and ISO 9328-7 depending on the steel

grade’s chemical composition and treatment condition.
© ISO 2018 – All rights reserved 3
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ISO 9328-1:2018(E)

4.1.2 Steels covered in ISO 9328-7 are additionally classified according to their structure into

— ferritic steels,
— martensitic steels,
— austenitic steels, and
— austenitic-ferritic steels.
For more details, see ISO 15510.
4.2 Designation

The steel grades specified in the applicable documents of ISO 9328 (all parts) are designated with steel

names in accordance with ISO/TS 4949.
5 Information to be supplied by the purchaser
5.1 Mandatory information

The following information shall be supplied by the purchaser at the time of enquiry and order:

a) the quantity required;
b) the type of flat product;

c) the International Standard specifying the tolerances on dimensions and shape (see 6.7) and

whether the relevant International Standard permits the purchaser certain options, e.g. regarding

edge finishes or tolerance classes, specific information on these aspects;
d) the nominal dimensions of the product;

e) the number of the applicable documents of ISO 9328 (all parts), i.e. ISO 9328-2, ISO 9328-3,

ISO 9328-4, ISO 9328-5, ISO 9328-6 or ISO 9328-7;
f) the steel name;

g) the delivery condition, if it differs from the usual condition specified in the applicable documents

of ISO 9328 (all parts); for stainless steels, the process route selected from the relevant table of

ISO 9328-7;
h) the type of inspection document to be issued (see 7.1).
5.2 Options

A number of options are specified in this document and listed below. If the purchaser does not indicate a

wish to implement any of these options at the time of enquiry and order, the products shall be supplied

in accordance with the basic specification (see 5.1):
a) specification of the steelmaking process (see 6.1.1);
b) mechanical properties after additional heat treatment (see 6.4.1);
c) specification of special classes for the reduction of area (see 6.4.2);

d) impact energy values, the relevant testing temperature and the test direction, where applicable

(see 6.4.3 and Table 1);
e) surface conditions other than those specified in ISO 7788 (see 6.5);
4 © ISO 2018 – All rights reserved
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ISO 9328-1:2018(E)
f) verification of internal soundness (see 6.6);
g) one or several of the optional tests (see 7.2 and Table 1);
h) deviating frequency of testing (see 8.1.1 and 8.1.3);
i) deviating delivery condition (see 8.2.1.3);

j) permission to use circular test pieces for nominal thicknesses > 20 mm (see 8.2.2.2.3 and Table 3);

k) specification of an analytical method (see 9.1);
l) temperature of the tensile test at elevated temperature (see 9.3);
m) marking method (see 10.1);
n) special marking (see 10.2 and 10.3);
o) information to be given by marking (see Table 5).
6 Requirements
6.1 Steelmaking process

6.1.1 Unless a special steelmaking process has been agreed at the time of enquiry and order, the

steelmaking process shall be left at the discretion of the manufacturer. If a special steelmaking process

has been specified, this shall be reported in the inspection document.
6.1.2 Steels other than stainless steels shall be fully killed.
6.2 Delivery condition
See Clause 3 and 3.1 and the applicable documents of ISO 9328 (all parts).
6.3 Chemical composition
6.3.1 Cast (heat) analysis
The cast (heat) analysis reported by the steel producer
...

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