SIST EN ISO 10042:2018
(Main)Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections (ISO 10042:2018)
Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections (ISO 10042:2018)
This document specifies quality levels for imperfections in arc-welded joints in aluminium and its
alloys. It applies to material thicknesses above 0,5 mm.
Three quality levels are given in order to permit application to a wide range of welded constructions.
They are designated by symbols B, C and D. Quality level B corresponds to the highest requirement
on the finished weld. The quality levels refer to production quality and not to the fitness for purpose
(see 3.2) of the product manufactured.
This document is applicable to all types of welds (e.g. butt welds, fillet welds and branch connections),
to manual, mechanized and automated welding, and to all welding positions.
It is applicable to the following welding processes:
— metal inert gas welding (MIG welding); gas metal arc welding /USA;
— tungsten inert gas welding (TIG welding); gas tungsten arc welding /USA;
— plasma arc welding.
It is not applicable to metallurgical aspects (e.g. grain size, hardness).
Schweißen - Lichtbogenschweißverbindungen an Aluminium und seinen Legierungen - Bewertungsgruppen von Unregelmäßigkeiten (ISO 10042:2018)
Diese Internationale Norm enthält Bewertungsgruppen von Unregelmäßigkeiten an Lichtbogenschweiß-verbindungen aus Aluminium und seinen Legierungen. Sie gilt für Werkstoffdicken von über 0,5 mm und deckt durchgeschweißte Stumpfnähte sowie alle Arten von Kehlnähten ab. Die Grundsätze dieser Internationalen Norm dürfen auch für teilweise durchgeschweißte Stumpfnähte angewendet werden.
ISO 13919 2 enthält Bewertungsgruppen für strahlgeschweißte Verbindungen.
Die drei Bewertungsgruppen sind so festgelegt, dass sie eine breite Anwendung in der schweißtechnischen Fertigung erlauben. Sie werden bezeichnet durch die Kennbuchstaben B, C und D. Bewertungsgruppe B entspricht den höchsten Anforderungen an die fertige Schweißnaht. Die Bewertungsgruppen beziehen sich auf die Fertigungsqualität und nicht auf die Gebrauchstauglichkeit (siehe 3.2) des gefertigten Erzeugnisses.
Diese Internationale Norm gilt für:
— alle Schweißverbindungen, z. B. Stumpfnähte, Kehlnähte und Rohrabzweigungen;
— die folgenden Schweißprozesse:
— Metall Inertgasschweißen (MIG Schweißen); USA: gas metal arc welding
— Wolfram Inertgasschweißen (WIG Schweißen); USA: gas tungsten arc welding
— Plasmaschweißen;
— manuelles, mechanisiertes und automatisches Schweißen;
— alle Schweißpositionen.
Metallurgische Gesichtspunkte, z. B. Korngröße, Härte, werden von dieser Internationalen Norm nicht erfasst.
Soudage - Assemblages en aluminium et alliages d'aluminium soudés à l'arc - Niveaux de qualité par rapport aux défauts (ISO 10042:2018)
Le présent document fournit des niveaux de qualité par rapport aux défauts dans les assemblages en aluminium et alliages d'aluminium soudés à l'arc. Elle s'applique à des épaisseurs de matériau supérieures à 0,5 mm.
Trois niveaux de qualité sont donnés dans l'ordre dans le but de permettre l'application à une large gamme de fabrications soudées. Ils sont désignés par les symboles B, C et D. Le niveau de qualité B correspond à l'exigence la plus élevée pour la soudure terminée. Les niveaux de qualité se rapportent à la qualité de la fabrication et non à l'aptitude à l'emploi (voir 3.2) du produit fini.
Le présent document s'applique à tous les types de soudures (par exemple soudures bout à bout, soudures d'angle et piquages), au soudage manuel, mécanisé et automatique, et à toutes les positions de soudage.
Il s'applique aux procédés de soudage suivants:
- soudage à l'arc en atmosphère inerte avec fil électrode (MIG);
- soudage à l'arc en atmosphère inerte avec électrode de tungstène (TIG);
- soudage à l'arc au plasma;
Le présent document ne traite pas des aspects métallurgiques (par exemple la grosseur de grain ou la dureté).
Varjenje - Obločni zvarni spoji na aluminiju in njegovih zlitinah - Stopnje sprejemljivosti nepopolnosti (ISO 10042:2018)
Ta dokument določa stopnje sprejemljivosti nepopolnosti za obločne zvarne spoje na aluminiju in njegovih zlitinah. Uporablja se za debeline materialov, večje od 0,5 mm.
Za uporabo pri širokem naboru varjenih konstrukcij so podane tri stopnje sprejemljivosti. Označene so s simboli B, C in D. Stopnja sprejemljivosti B ustreza najvišjim zahtevam za končne zvare. Stopnje sprejemljivosti se nanašajo na kakovost izdelave in ne primernost za namen (glej točko 3.2) izdelanega proizvoda.
Ta dokument se uporablja za vse vrste zvarov (npr. soležne zvare, kotne zvare in Y-zvare), ročno, mehanizirano in avtomatizirano varjenje ter vse položaje varjenja.
Uporablja se za naslednje postopke varjenja:
– obločno varjenje v inertnem plinu s taljivo elektrodo (varjenje MIG); varjenje GMAW/ZDA;
– obločno varjenje v inertnem plinu z volframovo elektrodo (varjenje TIG); varjenje GTAW/ZDA;
– plazemsko obločno varjenje.
Ne uporablja se za metalurške vidike (npr. velikost zrn, trdota).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 10042:2018
01-oktober-2018
1DGRPHãþD
SIST EN ISO 10042:2006
SIST EN ISO 10042:2006/AC:2006
9DUMHQMH2EORþQL]YDUQLVSRMLQDDOXPLQLMXLQQMHJRYLK]OLWLQDK6WRSQMH
VSUHMHPOMLYRVWLQHSRSROQRVWL ,62
Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections
(ISO 10042:2018)
Schweißen - Lichtbogenschweißverbindungen an Aluminium und seinen Legierungen -
Bewertungsgruppen von Unregelmäßigkeiten (ISO 10042:2018)
Soudage - Assemblages en aluminium et alliages d'aluminium soudés à l'arc - Niveaux
de qualité par rapport aux défauts (ISO 10042:2018)
Ta slovenski standard je istoveten z: EN ISO 10042:2018
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
SIST EN ISO 10042:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 10042:2018
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SIST EN ISO 10042:2018
EN ISO 10042
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2018
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 10042:2005
English Version
Welding - Arc-welded joints in aluminium and its alloys -
Quality levels for imperfections (ISO 10042:2018)
Soudage - Assemblages en aluminium et alliages Schweißen - Lichtbogenschweißverbindungen an
d'aluminium soudés à l'arc - Niveaux de qualité par Aluminium und seinen Legierungen -
rapport aux défauts (ISO 10042:2018) Bewertungsgruppen von Unregelmäßigkeiten (ISO
10042:2018)
This European Standard was approved by CEN on 10 June 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10042:2018 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 10042:2018
EN ISO 10042:2018 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 10042:2018
EN ISO 10042:2018 (E)
European foreword
This document (EN ISO 10042:2018) 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 DIN.
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 January 2019, and conflicting national standards shall
be withdrawn at the latest by January 2019.
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 10042:2005.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 10042:2018 has been approved by CEN as EN ISO 10042:2018 without any modification.
3
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SIST EN ISO 10042:2018
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SIST EN ISO 10042:2018
INTERNATIONAL ISO
STANDARD 10042
Third edition
2018-06
Welding — Arc-welded joints in
aluminium and its alloys — Quality
levels for imperfections
Soudage — Assemblages en aluminium et alliages d'aluminium
soudés à l'arc — Niveaux de qualité par rapport aux défauts
Reference number
ISO 10042:2018(E)
©
ISO 2018
---------------------- Page: 7 ----------------------
SIST EN ISO 10042:2018
ISO 10042:2018(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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 10042:2018
ISO 10042:2018(E)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Assessment of imperfections . 3
Annex A (informative) Examples of the determination of the percent porosity .16
Annex B (informative) Additional information and guidelines for users of this document .18
Bibliography .19
© ISO 2018 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 10042:2018
ISO 10042:2018(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 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 10, Quality management in the field of welding.
This third edition cancels and replaces the second edition (ISO 10042:2005), of which it constitutes a
minor revision. The changes compared to the previous edition are as follows:
— reference numbers from ISO 4063 have been deleted in the Scope;
— in Table 1, 1.3, reference number ISO 6520-1 has been changed from “2012 - uniformly distributed
porosity ” to “2018 - surface porosity”;
— in Table 1, 1.8, a new figure has been inserted and changes to quality levels B and C have been made;
— in Table 1, 1.9, changes to quality level C have been made;
— in Table 1, 1.14, a drawing has been added;
— in Table 1, 1.15, changes to quality level D have been made;
— in Table 1, 1.18, a drawing has been deleted and a new one inserted, and reference to 6520-1-5013
“shrinkage groove” has been deleted;
— in Table 1, 1.19 to 1.21, imperfections have been added with values from ISO 5817: poor restart,
stray arc, spatter;
— in Table 1, 2.2, changes to quality levels B and C have been made;
— in Table 1, 2.10, changes to quality levels C and D have been made;
— in Table 1, 2.11, a drawing has been deleted and new ones introduced, requirements for “Butt joint
(full penetration)” have been updated;
— in Table 1, 2.12, a new drawing has been introduced with new requirements, and changes to quality
levels C and D have been made;
iv © ISO 2018 – All rights reserved
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SIST EN ISO 10042:2018
ISO 10042:2018(E)
— editorial changes have been made.
Requests for official interpretation of any aspect of this document should be directed to the secretariat
of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies can be found at
www .iso .org.
© ISO 2018 – All rights reserved v
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SIST EN ISO 10042:2018
ISO 10042:2018(E)
Introduction
This document is intended to be used as a reference in drafting application codes and/or other
application standards. It contains a simplified selection of arc welding imperfections based on the
designations given in ISO 6520-1.
Some imperfections described in ISO 6520-1 have been used directly while others have been grouped
together. The basic numerical referencing system from ISO 6520-1 has been used.
The purpose of this document is to define the dimensions of typical imperfections which can be
expected in normal fabrication. It can be used within a quality system for the production of welded
joints. It provides three sets of dimensional values from which a selection can be made for a particular
application. The quality level necessary in each case needs to be defined by the application standard or
the responsible designer, in conjunction with the manufacturer, user and/or other parties concerned.
The quality level are prescribed before the start of production, preferably at the enquiry or order stage.
For special purposes, additional details can be necessary.
The quality levels given in this document provide basic reference data and are not specifically related
to any particular application. They refer to the types of welded joint in fabrication and not to the
complete product or component itself. It is possible, therefore, that different quality levels are applied
to individual welded joints in the same product or component.
It is normally be expected that, for a particular welded joint, the dimensional limits for imperfections
can all be covered by specifying one quality level. In some cases, it can be necessary to specify different
quality levels for different imperfections in the same welded joint.
The choice of quality level for any application takes account of design considerations, subsequent
processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service conditions (e.g. temperature,
environment) and consequences of failure. Economic factors are also important and include not only
the cost of welding but also of inspection, test and repair.
Although this document includes types of imperfection relevant to the arc welding processes given in
Clause 1, only those which are applicable to the process and application in question are considered.
Imperfections are quoted in terms of their actual dimensions, and their detection and evaluation
can require the use of one or more methods of non-destructive testing. The detection and sizing of
imperfections is dependent on the testing methods and the extent of testing specified in the application
standard or contract.
This document does not address the methods used for the detection of imperfections. However,
ISO 17635 contains a correlation between the quality level and acceptance level for different NDT (non-
destructive testing) methods.
This document is directly applicable to visual testing of welds and does not include details of
recommended methods of detection or sizing by other non-destructive means. There are difficulties
in using these limits to establish appropriate criteria applicable to NDT methods such as ultrasonic
(UT), radiographic (RT) and penetrant testing (PT), for which additional requirements for testing can
be necessary.
The values given for imperfections are for welds produced using normal welding practice. Requirements
for smaller (more stringent) values as stated in quality level B can include additional manufacturing
processes, e.g. grinding, TIG dressing.
vi © ISO 2018 – All rights reserved
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SIST EN ISO 10042:2018
INTERNATIONAL STANDARD ISO 10042:2018(E)
Welding — Arc-welded joints in aluminium and its alloys
— Quality levels for imperfections
1 Scope
This document specifies quality levels for imperfections in arc-welded joints in aluminium and its
alloys. It applies to material thicknesses above 0,5 mm.
Three quality levels are given in order to permit application to a wide range of welded constructions.
They are designated by symbols B, C and D. Quality level B corresponds to the highest requirement
on the finished weld. The quality levels refer to production quality and not to the fitness for purpose
(see 3.2) of the product manufactured.
This document is applicable to all types of welds (e.g. butt welds, fillet welds and branch connections),
to manual, mechanized and automated welding, and to all welding positions.
It is applicable to the following welding processes:
— metal inert gas welding (MIG welding); gas metal arc welding /USA;
— tungsten inert gas welding (TIG welding); gas tungsten arc welding /USA;
— plasma arc welding.
It is not applicable to metallurgical aspects (e.g. grain size, hardness).
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 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic
materials — Part 1: Fusion welding
3 Terms and de
...
SLOVENSKI STANDARD
oSIST prEN ISO 10042:2017
01-junij-2017
9DUMHQMH2EORþQL]YDUQLVSRMLDOXPLQLMDLQQMHJRYLK]OLWLQ6WRSQMHVSUHMHPOMLYRVWL
QHSRSROQRVWL ,62',6
Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections
(ISO/DIS 10042:2017)
Schweißen - Lichtbogenschweißverbindungen an Aluminium und seinen Legierungen -
Bewertungsgruppen von Unregelmäßigkeiten (ISO/DIS 10042:2017)
Soudage - Assemblages en aluminium et alliages d'aluminium soudés à l'arc - Niveaux
de qualité par rapport aux défauts (ISO/DIS 10042:2017)
Ta slovenski standard je istoveten z: prEN ISO 10042
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
oSIST prEN ISO 10042:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10042
ISO/TC 44/SC 10 Secretariat: DIN
Voting begins on: Voting terminates on:
2017-04-07 2017-06-29
Welding — Arc-welded joints in aluminium and its
alloys — Quality levels for imperfections
Soudage — Assemblages en aluminium et alliages d’aluminium soudés à l’arc — Niveaux de qualité par
rapport aux défauts
ICS: 25.160.40
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 10042:2017(E)
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. ISO 2017
---------------------- Page: 2 ----------------------
ISO/DIS 10042:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/DIS 10042:2017(E)
Contents
This template allows you to work with default MS Word functions and styles. You can use these if you
want to maintain the Table of Contents automatically and apply auto-numbering if this is your
preference. Delete this Table of Contents if not required.
Foreword . v
Introduction. vii
Welding — Arc-welded joints in aluminium and its alloys — Quality levels for imperfections . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Symbols . 3
5 Assessment of imperfections . 3
Annex A (informative) Examples of the determination of the percent porosity . 18
Annex B (informative) Additional information and guidelines for users of this International
Standard . 20
Bibliography . 21
© ISO 2017 – All rights reserved 3
---------------------- Page: 4 ----------------------
ISO/DIS 10042:2017(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. 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. 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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 44/SC 10.
ADD INFORMATION ABOUT REPLACED STANDARDS AND OTHER PARTS AS NECESSARY
Main changes to the previous edition:
a) reference numbers from ISO 4063 deleted in the Scope;
b) Table 1, 1.3: reference number ISO 6520-1 changed from "2012 - uniformly distributed porosity " to
"2018 - surface porosity";
c) Table 1, 1.8: new figure and change to quality level B and C;
d) Table 1, 1.9: change to quality level C;
e) Table 1, 1.14: additional figure;
f) Table 1, 1.15: change to quality level D;
g) Table 1, 1.18: new figure and figure deleted, reference to 6520-1-5013 "shrinkage groove" deleted;
h) Table 1, 1.19 to 1.21, : imperfections added with values from ISO 5817: poor restart, stray arc,
spatter;
i) Table 1, 2.2: changes to quality levels B and C;
© ISO 2017 – All rights reserved
5
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ISO/DIS 10042:2017(E)
j) Table 1, 2.10: changes to quality levels C and D;
k) Table 1, 2.11: one old figure deleted and new figures introduced, requirements for "Butt joint (full
penetration)";
l) Table 1, 2.12: new figure introduced with new requirements, changes to quality levels C and D;
m) standard editorially revised.
© ISO 2017 – All rights reserved
6
---------------------- Page: 6 ----------------------
ISO/DIS 10042:2017(E)
Introduction
This International Standard should be used as a reference in drafting application codes and/or other
application standards. It contains a simplified selection of arc welding imperfections based on the
designations given in ISO 6520-1.
Some imperfections described in ISO 6520-1 have been used directly and some have been grouped
together. The basic numerical referencing system from ISO 6520-1 has been used.
The purpose of this International Standard is to define the dimensions of typical imperfections which
might be expected in normal fabrication. It may be used within a quality system for the production of
welded joints. It provides three sets of dimensional values from which a selection can be made for a
particular application. The quality level necessary in each case should be defined by the application
standard or the responsible designer in conjunction with the manufacturer, user and/or other parties
concerned. The quality level will have to be prescribed before the start of production, preferably at the
enquiry or order stage. For special purposes, additional details may to be prescribed.
The quality levels given in this International Standard provide basic reference data and are not
specifically related to any particular application. They refer to the types of welded joint in fabrication
and not to the complete product or component itself. It is possible, therefore, that different quality
levels are applied to individual welded joints in the same product or component.
It would normally be expected that for a particular welded joint the dimensional limits for
imperfections could all be covered by specifying one quality level. In some cases, it may be necessary to
specify different quality levels for different imperfections in the same welded joint.
The choice of quality level for any application should take account of design considerations, subsequent
processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service conditions (e.g. temperature,
environment) and consequences of failure. Economic factors are also important and should include not
only the cost of welding but also of inspection, test and repair.
Although this International Standard includes types of imperfection relevant to the arc welding
processes given in Clause 1, only those which are applicable to the process and application in question
need to be considered.
Imperfections are quoted in terms of their actual dimensions, and their detection and evaluation may
require the use of one or more methods of non-destructive testing. The detection and sizing of
imperfections is dependent on the inspection methods and the extent of testing specified in the
application standard or contract.
This International Standard does not address the methods used for the detection of imperfections.
However, ISO 17635 contains a correlation between the quality level and acceptance level for different
NDT methods.
This International Standard is directly applicable to visual examination of welds and does not include
details of recommended methods of detection or sizing by other non-destructive means. It should be
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considered that there are difficulties in using these limits to establish appropriate criteria applicable to
non-destructive testing methods such as ultrasonic, radiographic and penetrant testing and they may
need to be supplemented by requirements for inspection, examination and testing.
The values given for imperfections are for welds produced using normal welding practice.
Requirements for smaller (more stringent) values as stated in quality level B may include additional
manufacturing processes, e.g. grinding, TIG dressing.
Requests for official interpretation of any aspect of this International Standard should be directed to the
secretariat of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies can
be found at www.iso.org.
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ISO/DIS 10042:2017(E)
Welding — Arc-welded joints in aluminium and its alloys —
Quality levels for imperfections
1 Scope
This International Standard specifies quality levels for imperfections in arc-welded joints in aluminium
and its alloys. It applies to material thicknesses above 0,5 mm. It covers full-penetration butt welds and
all fillet welds. The principles of this International Standard may also be applied to partial-penetration
butt welds.
Quality levels for beam-welded joints are presented in ISO 13919-2.
Three quality levels are given in order to permit application to a wide range of welded constructions.
They are designated by symbols B, C and D. Quality level B corresponds to the highest requirement on
the finished weld. The quality levels refer to production quality and not to the fitness for purpose (see
3.2) of the product manufactured.
This International Standard applies to:
all types of weld, e.g. butt welds, fillet welds and branch connections;
the following welding processes:
metal inert gas welding (MIG welding); gas metal arc welding /USA/,
tungsten inert gas welding (TIG welding); gas tungsten arc welding /USA/,
plasma arc welding;
manual, mechanized and automatic welding;
all welding positions.
Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.
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 2553, Welding and allied processes — Symbolic representation on drawings — Welded joints
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic
materials — Part 1: Fusion welding
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
quality level
description of the quality of a weld on the basis of type, size and amount of selected imperfections
3.2
fitness for purpose
ability of a product, process or service to serve a defined purpose under specific conditions
3.3
short imperfections
in cases when the weld is 100 mm long or longer, imperfections are considered to be short imperfections if, in the
100 mm which contains the greatest number of imperfections, their total length is not greater than 25 mm;
in cases when the weld is less than 100 mm long, imperfections are considered to be short imperfections if their
total length is not greater than 25 % of the length of the weld
3.4
systematic imperfection
imperfection that is repeatedly distributed in the weld over the weld length to be examined, the size of each
individual imperfection being within the specified limits
3.5
cross-sectional area
area to be considered after fracture or sectioning
3.6
projected area
area where imperfections distributed along the volume of the weld under consideration are imaged
two-dimensionally
NOTE In contrast to the cross-sectional area, the occurrence of imperfections is dependent on the weld thickness when
exposed radiographically (see Figure 1).
Key
1 direction of X-rays 3 6-fold thickness 5 2-fold thickness
2 4 pores per volume unit 4 3-fold thickness 6 1-fold thickness
Figure 1 — Radiographic films of specimens with identical occurrence of pores per volume unit
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