ISO 9328-4:2018
(Main)Steel flat products for pressure purposes — Technical delivery conditions — Part 4: Nickel-alloy steels with specified low temperature properties
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
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Standards Content (Sample)
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
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ISO 9328-4:2018(E)
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ii © ISO 2018 – All rights reserved
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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.
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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.
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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
b
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.
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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
a
Permissible deviation
in the cast (heat) analysis
Element
% by mass % by mass
b
C ≤ 0,18 +0,02
Si
...
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