prEN ISO 26304

Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO/DIS 26304:2024)

ISO 26304:2017 specifies requirements for classification of solid wire electrodes, tubular cored electrodes, and electrode-flux combinations (the all-weld metal deposits) in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding of high strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa. One flux can be tested and classified with different electrodes. One electrode can be tested and classified with different fluxes. The solid wire electrode is also classified separately based on its chemical composition.
This document is a combined specification providing for classification utilizing a system based on the yield strength and average impact energy of 47 J for the all-weld metal, or utilizing a system based on the tensile strength and average impact energy of 27 J for the all-weld metal.
a) Clauses, subclauses and tables which carry the suffix letter "A" are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based on the yield strength and the average impact energy of 47 J for the all-weld metal obtained with electrode-flux combinations in accordance with this document.
b) Clauses, subclauses and tables which carry the suffix letter "B" are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based on the tensile strength and the average impact energy of 27 J for the all-weld metal obtained with electrode-flux combinations in accordance with this document.
c) Clauses, subclauses and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all solid wire electrodes, tubular cored electrodes and electrode-flux combinations classified in accordance with this document.
For comparison purposes, some tables include requirements for electrodes classified in accordance with both systems, placing individual electrodes from the two systems, which are similar in composition and properties, on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of the formulation of a particular electrode, it is often, but not always, possible to produce an electrode that can be classified in both systems, in which case the electrode, or its packaging, can be marked with the classification in either or both systems.

Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Draht-Pulver-Kombinationen zum Unterpulverschweißen von hochfesten Stählen - Einteilung (ISO/DIS 26304:2024)

Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés et couples électrodes-flux pour le soudage à l'arc sous flux des aciers à haute résistance - Classification (ISO/DIS 26304:2024)

ISO 26304:2017 spécifie les exigences relatives à la classification des fils-électrodes pleins, des fils-électrodes fourrés et des couples fils-flux (dépôts en métal fondu hors dilution) à l'état brut de soudage ou après traitement thermique après soudage des aciers à haute résistance ayant une limite d'élasticité minimale supérieure à 500 MPa ou une résistance à la traction minimale supérieure à 570 MPa. Un flux peut être soumis à essai et être classifié avec différents fils-électrodes. Un fil-électrode peut être soumis à essai et être classifié avec différents flux. Le fil-électrode plein est également classifié séparément d'après sa composition chimique.
La présente Norme internationale constitue une spécification mixte permettant une classification utilisant un système basé soit sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J pour le métal fondu hors dilution, soit sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution.
a) Les articles, les paragraphes et les tableaux qui portent le suffixe «A» ne sont applicables qu'aux fils-électrodes pleins, aux fils-électrodes fourrés et dépôts en métal fondu hors dilution classifiés d'après le système basé sur la limite d'élasticité et l'énergie de rupture moyenne de 47 J pour le métal fondu hors dilution obtenu avec des couples fils-flux conformément à la présente Norme internationale.
b) Les articles, les paragraphes et les tableaux qui portent le suffixe «B» ne sont applicables qu'aux fils-électrodes pleins, aux fils-électrodes fourrés et dépôts en métal fondu hors dilution classifiés d'après le système basé sur la résistance à la traction et l'énergie de rupture moyenne de 27 J pour le métal fondu hors dilution obtenu avec des couples fils-flux conformément à la présente Norme internationale.
c) Les articles, les paragraphes et les tableaux qui ne portent ni le suffixe «A» ni le suffixe «B» sont applicables à tous les fils-électrodes pleins, fils-électrodes fourrés et couples fil-flux classifiés conformément à la présente Norme internationale.
À des fins de comparaison, certains tableaux comportent des exigences pour des électrodes classifiées selon les deux systèmes, en plaçant des électrodes individuelles issues des deux systèmes, semblables en composition et en propriétés, sur des lignes adjacentes du tableau particulier. Sur une ligne particulière du tableau, obligatoire pour un système, le symbole pour l'électrode semblable dans l'autre système est indiqué entre parenthèses. Selon une restriction appropriée de la formulation d'une électrode particulière, il est souvent mais pas toujours possible de produire une électrode qui peut être classifiée selon les deux systèmes, auquel cas l'électrode, ou son emballage, peut être marquée avec la classification de l'un ou l'autre système.

Dodajni in pomožni materiali za varjenje - Masivne žične elektrode, strženske žice in kombinacije žic in praškov za obločno varjenje visokotrdnostnih jekel pod praškom - Razvrstitev (ISO/DIS 26304:2024)

General Information

• Status: Not Published
• Publication Date: 29-Jun-2025
• ICS: 25.160.20 - Welding consumables
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121/WG 3 - Welding consumables
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 24-Oct-2024
• Completion Date: 24-Oct-2024
• Ref Project: oSIST prEN ISO 26304:2024 - Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO/DIS 26304:2024)

Relations

• Revises: EN ISO 26304:2018 - Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO 26304:2017)
• Effective Date: 05-Apr-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2024
Dodajni in pomožni materiali za varjenje - Masivne žične elektrode, strženske žice
in kombinacije žic in praškov za obločno varjenje visokotrdnostnih jekel pod
praškom - Razvrstitev (ISO/DIS 26304:2024)
Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-
flux combinations for submerged arc welding of high strength steels - Classification
(ISO/DIS 26304:2024)
Schweißzusätze - Massivdrahtelektroden, Fülldrahtelektroden und Draht-Pulver-
Kombinationen zum Unterpulverschweißen von hochfesten Stählen - Einteilung (ISO/DIS
26304:2024)
Produits consommables pour le soudage - Fils-électrodes pleins, fils-électrodes fourrés
et couples électrodes-flux pour le soudage à l'arc sous flux des aciers à haute résistance
- Classification (ISO/DIS 26304:2024)
Ta slovenski standard je istoveten z: prEN ISO 26304
ICS:
25.160.20 Potrošni material pri varjenju Welding consumables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 26304
ISO/TC 44/SC 3
Welding consumables — Solid wire
Secretariat: ANSI
electrodes, tubular cored electrodes
Voting begins on:
and electrode-flux combinations
2024-04-26
for submerged arc welding of high
Voting terminates on:
strength steels — Classification
2024-07-19
Produits consommables pour le soudage — Fils-électrodes pleins,
fils-électrodes fourrés et couples électrodes-flux pour le soudage à
l'arc sous flux des aciers à haute résistance — Classification
ICS: 25.160.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 26304:2024(en)
DRAFT
ISO/DIS 26304:2024(en)
International
Standard
ISO/DIS 26304
ISO/TC 44/SC 3
Welding consumables — Solid wire
Secretariat: ANSI
electrodes, tubular cored electrodes
Voting begins on:
and electrode-flux combinations
for submerged arc welding of high
Voting terminates on:
strength steels — Classification
Produits consommables pour le soudage — Fils-électrodes pleins,
fils-électrodes fourrés et couples électrodes-flux pour le soudage à
l'arc sous flux des aciers à haute résistance — Classification
ICS: 25.160.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 26304:2024(en)
ii
ISO/DIS 26304:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
4.1 General .2
4.2 Classification systems .2
5 Symbols and requirements . 3
5.1 General .3
5.2 Symbol for the product or process .3
5.3 Symbols for the tensile properties of the all-weld metal deposit.4
5.3.1 Multi-run technique . .4
5.3.2 Two-run technique – system B only .4
5.4 Symbol for the impact properties of the multi-run or two-run welded joint .5
5.5 Symbol for the type of welding flux .6
5.6 Symbol for the chemical composition of solid wire electrodes and of the all-weld metal
from tubular cored electrode-flux combinations .6
5.7 Symbol for post-weld heat treatment . 12
5.8 Optional symbol for hydrogen content of deposited metal . 13
6 Mechanical tests . 14
6.1 Multi-run technique .14
6.1.2 Preheating and interpass temperature .14
6.1.3 Welding conditions and pass sequence . 15
6.2 Two-run technique – system B .16
7 Chemical analysis . .16
8 Rounding procedure .16
9 Retests . 17
10 Technical delivery conditions . 17
11 Examples of designation . 17
11.1 Example 1 – Classification by yield strength and 47 J impact energy – system A .17
11.2 Example 2 – Classification by tensile strength and 27 J impact energy – system B .17
11.3 Example 3 – Classification by yield strength and 47 J impact energy – system A .18
11.4 Example 4 – Classification by tensile strength and 27 J impact energy – system B .18
11.5 Example 5 – Classification by yield strength and 47 J impact energy – system A .18
11.6 Example 6 – Classification by tensile strength and 27 J impact energy – system B .18
11.7 Example 7 – Classification by yield strength and 47 J impact energy – system A .18
11.8 Example 8 – Classification by tensile strength and 27 J impact energy – system B .19
Annex A (informative) Possible risk of weld metal hydrogen cracking .20
Bibliography .21

iii
ISO/DIS 26304:2024(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 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 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).
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.
This fourth edition cancels and replaces the third edition (ISO 26304:2017), which has been technically
revised.
The m
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