Steel flat products for pressure purposes — Technical delivery conditions — Part 4: Nickel-alloy steels with specified low temperature properties

ISO 9328-4:2018 specifies the technical delivery conditions for plates and strip for pressure equipment made of nickel-alloy steels as specified in Tables A.1 and B.1. The requirements and definitions of ISO 9328‑1 also apply to this document. NOTE This document offers the possibility of specifying products in accordance with European design codes and ASME-type design codes.

Produits plats en acier pour service sous pression — Conditions techniques de livraison — Partie 4: Aciers alliés au nickel avec caractéristiques spécifiées à basse température

General Information

Status
Published
Publication Date
31-Jan-2018
Current Stage
6060 - International Standard published
Start Date
01-Feb-2018
Completion Date
01-Feb-2018
Ref Project

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INTERNATIONAL ISO
STANDARD 9328-4
Fourth edition
2018-02
Steel flat products for pressure
purposes — Technical delivery
conditions —
Part 4:
Nickel-alloy steels with specified low
temperature properties
Produits plats en acier pour service sous pression — Conditions
techniques de livraison —
Partie 4: Aciers alliés au nickel avec caractéristiques spécifiées à basse
température
Reference number
ISO 9328-4:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 9328-4:2018(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

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 9328-4:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Classification and designation ............................................................................................................................................................... 1

4.1 Classification ............................................................................................................................................................................................. 1

4.2 Designation ................................................................................................................................................................................................ 2

5 Information to be supplied by the purchaser......................................................................................................................... 2

5.1 Mandatory information ................................................................................................................................................................... 2

5.2 Options ........................................................................................................................................................................................................... 2

5.3 Example for ordering ......................................................................................................................................................................... 2

6 Requirements .......................................................................................................................................................................................................... 2

6.1 Steelmaking process ........................................................................................................................................................................... 2

6.2 Delivery condition ................................................................................................................................................................................ 2

6.3 Chemical composition ...................................................................................................................................................................... 3

6.4 Mechanical properties ...................................................................................................................................................................... 4

6.5 Surface condition .................................................................................................................................................................................. 4

6.6 Internal soundness .............................................................................................................................................................................. 4

6.7 Dimensions and tolerances on dimensions .................................................................................................................... 4

6.8 Calculation of mass .............................................................................................................................................................................. 4

7 Inspection .................................................................................................................................................................................................................... 4

7.1 Types of inspection and inspection documents ......................................................................................................... 4

7.2 Tests to be carried out ...................................................................................................................................................................... 4

7.3 Retests, sorting and reprocessing ........................................................................................................................................... 4

8 Sampling ........................................................................................................................................................................................................................ 5

9 Test methods ............................................................................................................................................................................................................. 5

10 Marking .......................................................................................................................................................................................................................... 5

11 Handling ........................................................................................................................................................................................................................ 5

Annex A (normative) Chemical composition and mechanical properties of products

delivered in accordance with European design codes .................................................................................................. 6

Annex B (normative) Chemical composition and mechanical properties of products

delivered in accordance with ASME-type design codes................................................................................................ 9

Annex C (informative) Steel designations in accordance with this document and

designation of comparable steel grades in national or regional standards ........................................11

Annex D (informative) Guidelines for heat treatment ....................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

© ISO 2018 – All rights reserved iii
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ISO 9328-4:2018(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 9328-4:2011), which has been technically

revised. The following changes have been made:
— the term “product thickness” has been replaced with “nominal thickness”;
— the new steel grades X6Ni7 and X9Ni7 have been added;
— the example of ordering has been revised;
— additional steel grades have been included in Clause 11.
— in Table B.1, the specifications of “P” and “S” have been changed.
A list of all the parts in the ISO 9328 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 9328-4:2018(E)
Steel flat products for pressure purposes — Technical
delivery conditions —
Part 4:
Nickel-alloy steels with specified low temperature
properties
1 Scope

This document specifies the technical delivery conditions for plates and strip for pressure equipment

made of nickel-alloy steels as specified in Tables A.1 and B.1.
The requirements and definitions of ISO 9328-1 also apply to this document.

NOTE This document offers the possibility of specifying products in accordance with European design codes

and ASME-type design codes.
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 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 9328-1:2018, Steel flat products for pressure purposes — Technical delivery conditions — Part 1:

General requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 9328-1 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
4 Classification and designation
4.1 Classification

In accordance with ISO 4948-1 and ISO 4948-2, all steel grades covered by this document are alloyed

special steels.
© ISO 2018 – All rights reserved 1
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ISO 9328-4:2018(E)
4.2 Designation
Shall be in accordance with ISO 9328-1.

NOTE Information on the designation of comparable steel grades in national or regional standards is given

in Annex C.
5 Information to be supplied by the purchaser
5.1 Mandatory information
Shall be in accordance with ISO 9328-1.

Additionally, for steel grades in accordance with Annex B, the test direction for the impact test shall be

agreed upon (see 9.2 and Table B.3, footnote ).
5.2 Options

A number of options are specified in this document. These are listed below under a) to f). Additionally,

the relevant options of ISO 9328-1 apply. 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 ISO 9328-1):

a) delivery condition other than that specified in Tables A.2, A.3, B.2 and B.3 (see 6.2.1);

b) tests in the simulated normalized condition (see 6.2.2);

c) special delivery condition for grades 14Ni9, 13Ni14+NT, 14Ni14 and X9Ni7 (see 6.2.3);

d) delivery of products in the untreated condition (see 6.2.4);
e) specification of an impact energy of 40 J (see Note to 6.4 and Table A.3);
f) impact test on longitudinal test pieces (see 9.3).
5.3 Example for ordering

An order of 10 plates with nominal dimensions thickness = 50 mm, width = 2 000 mm, length =

10 000 mm, made of a steel grade with the name 15NiMn6 as specified in this document, to be delivered

with inspection certificate 3.1 as specified in ISO 10474, is designated as follows:

10 plates – 50 × 2 000 × 10 000 – ISO 9328-4 15NiMn6 – Inspection certificate 3.1

6 Requirements
6.1 Steelmaking process
Shall be in accordance with ISO 9328-1.
6.2 Delivery condition

6.2.1 Unless otherwise agreed upon at the time of enquiry and order, the products covered by this

document shall be supplied in the usual conditions given in Tables A.2 and B.2 (see also 6.2.3 and 6.2.4).

NOTE Annex D gives heat treatment information for the purchaser for the steel grades of Annex A.

Information on welding is provided in appropriate documents, e.g. EN 1011-1 and EN 1011-2 or IIS/IIW 382-71.

2 © ISO 2018 – All rights reserved
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ISO 9328-4:2018(E)

6.2.2 For steel grades 11MnNi5-3 and 13MnNi6-3 (see Annex A), normalizing may, at the discretion of

the manufacturer, be replaced by normalizing rolling (see 5.2, Option 2).

6.2.3 For steel grades 14Ni9, 13Ni14+NT and 14Ni14 (see Annex B), the delivery condition

“thermomechanically rolled” may be agreed upon at the time of enquiry and order. In this case, the

product shall be marked correspondingly (+M).

6.2.4 If so agreed at the time of enquiry and order, the products covered by this document may be

supplied in the untreated condition.

The plates delivered in untreated conditions shall be appropriately marked (+AR) to denote that heat

treatment has not been performed.

6.2.5 For products delivered untreated, the specified tests shall be carried out by the manufacturer on

test pieces in the usual delivery condition given in Tables A.2 and B.2.

NOTE Tests in a simulated heat-treated condition are carried out to verify the suitability of the final product

in the usual delivery condition. However, they do not discharge the processor from the obligation of providing

proof of the specified properties in the finished product when adequately heat treated.

6.3 Chemical composition

6.3.1 The requirements of Tables A.1 and B.1 shall apply for the chemical composition according to the

cast (heat) analysis.

6.3.2 The product analysis shall not deviate from the values for the cast (heat) analysis specified in

Tables A.1 and B.1 by more than the values given in Table 1.
Table 1 — Permissible deviations of the product analysis
from the specified limits for the cast (heat) analysis
Maximum of specification range
Permissible deviation
in the cast (heat) analysis
Element
% by mass % by mass
C ≤ 0,18 +0,02
...

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