SIST EN ISO 14343:2025

SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN ISO 14343:2017
Dodajni in pomožni materiali za varjenje - Žične elektrode, tračne elektrode, žice in
palice za obločno varjenje nerjavnih in ognjeodpornih jekel - Razvrstitev (ISO
14343:2025)
Welding consumables - Wire electrodes, strip electrodes, wires and rods for arc welding
of stainless and heat resisting steels - Classification (ISO 14343:2025)
Schweißzusätze - Drahtelektroden, Bandelektroden, Drähte und Stäbe zum
Lichtbogenschweißen von nichtrostenden und hitzebeständigen Stählen - Einteilung
(ISO 14343:2025)
Produits consommables pour le soudage - Fils-électrodes, électrodes en feuillard, fils
d'apport et baguettes de soudage pour le soudage à l'arc des aciers inoxydables et des
aciers résistant aux températures élevées - Classification (ISO 14343:2025)
Ta slovenski standard je istoveten z: EN ISO 14343:2025
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14343
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2025
EUROPÄISCHE NORM
ICS 25.160.20 Supersedes EN ISO 14343:2017
English Version
Welding consumables - Wire electrodes, strip electrodes,
wires and rods for arc welding of stainless and heat
resisting steels - Classification (ISO 14343:2025)
Produits consommables pour le soudage - Fils- Schweißzusätze - Drahtelektroden, Bandelektroden,
électrodes, électrodes en feuillard, fils d'apport et Drähte und Stäbe zum Lichtbogenschweißen von
baguettes de soudage pour le soudage à l'arc des aciers nichtrostenden und hitzebeständigen Stählen -
inoxydables et des aciers résistant aux températures Einteilung (ISO 14343:2025)
élevées - Classification (ISO 14343:2025)
This European Standard was approved by CEN on 18 August 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14343:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14343:2025) has been prepared by Technical Committee ISO/TC 44 "Welding
and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by July 2025, and conflicting national standards shall be
withdrawn at the latest by July 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14343:2017.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14343:2025 has been approved by CEN as EN ISO 14343:2025 without any modification.

International
Standard
ISO 14343
Fourth edition
Welding consumables — Wire
2025-01
electrodes, strip electrodes,
wires and rods for arc welding of
stainless and heat resisting steels —
Classification
Produits consommables pour le soudage — Fils-électrodes,
électrodes en feuillard, fils d'apport et baguettes de soudage pour
le soudage à l'arc des aciers inoxydables et des aciers résistant
aux températures élevées — Classification
Reference number
ISO 14343:2025(en) © ISO 2025
ISO 14343:2025(en)
© ISO 2025
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
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 14343:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
4.1 General .2
4.2 Symbols for products/processes .2
4.2.1 Classification by nominal composition – system A.2
4.2.2 Classification by alloy type – system B .2
4.3 Symbols for chemical composition .3
5 Properties of all-weld metal .13
6 Chemical analysis . .13
7 Rounding procedure .13
8 Retesting .13
9 Technical delivery conditions .13
10 Examples of designation .13
Annex A (informative) Expected minimum tensile properties of all-weld metal .16
Bibliography .20

iii
ISO 14343:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 3, Welding consumables, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 121, Welding and allied processes, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 14343:2017), which has been technically
revised.
The main changes are as follows:
— addition of 19 L Mo Nb Si Ti, 18 L Ti for the alloy type 439, 27 7 5 N L and 29 8 2 N L in Table 1 and
Table A.1;
— adjustment of chemical compositions in Table 1;
— change of Table 1 footnote c on the symbol classifications in parentheses;
— Addition of G classification in Table 1 for System B and new footnote;
— revision of Clause 10, Example 5.
Any feedback or questions on this document should be directed to the user’s
national standards body. A complete listing of these bodies can be found at
www.iso.org/members.html. Official interpretations of ISO/TC 44 documents, where they exist, are
available from this page: https://committee.iso.org/sites/tc44/home/interpretation.html.

iv
ISO 14343:2025(en)
Introduction
This document provides a classification system for wire electrodes, strip electrodes, wires and rods for arc
welding of stainless and heat resisting steels. It recognizes that there are two somewhat different approaches
in the global market to classifying a given welding consumable, and allo
...