EN ISO 13919-1:2019

SLOVENSKI STANDARD
01-marec-2020
Nadomešča:
SIST EN ISO 13919-1:1998
Varjenje - Zvarni spoji, zvarjeni z elektronskim snopom in laserskim žarkom -
Zahteve in priporočila za stopnje sprejemljivosti nepravilnosti - 1. del: Jeklo, nikelj,
titan in njihove zlitine (ISO 13919-1:2019)
Electron and laser-beam welded joints - Requirements and recommendations on quality
levels for imperfections - Part 1: Steel, nickel, titanium and their alloys (ISO 13919-
1:2019)
Elektronen- und Laserstrahl-Schweißverbindungen - Leitfaden für Bewertungsgruppen
für Unregelmäßigkeiten - Teil 1: Stahl, Nickel, Titan und seine Legierungen (ISO 13919-
1:2019)
Assemblages soudés par faisceau d'électrons et par faisceau laser - Exigences et
recommandations sur les niveaux de qualité des défauts - Partie 1: Acier, nickel, titane et
leurs alliages (ISO 13919-1:2019)
Ta slovenski standard je istoveten z: EN ISO 13919-1:2019
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13919-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2019
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 13919-1:1996
English Version
Electron and laser-beam welded joints - Requirements and
recommendations on quality levels for imperfections - Part
1: Steel, nickel, titanium and their alloys (ISO 13919-
1:2019)
Assemblages soudés par faisceau d'électrons et par Elektronen- und Laserstrahl-Schweißverbindungen -
faisceau laser - Exigences et recommandations sur les Leitfaden für Bewertungsgruppen für
niveaux de qualité des défauts - Partie 1: Acier, nickel, Unregelmäßigkeiten - Teil 1: Stahl, Nickel, Titan und
titane et leurs alliages (ISO 13919-1:2019) seine Legierungen (ISO 13919-1:2019)
This European Standard was approved by CEN on 21 October 2019.

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, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13919-1:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13919-1:2019) 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 May 2020, and conflicting national standards shall be
withdrawn at the latest by May 2020.
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 13919-1:1996.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 13919-1:2019 has been approved by CEN as EN ISO 13919-1:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 13919-1
Second edition
2019-10
Electron and laser-beam welded
joints — Requirements and
recommendations on quality levels for
imperfections —
Part 1:
Steel, nickel, titanium and their alloys
Assemblages soudés par faisceau d'électrons et par faisceau laser —
Exigences et recommandations sur les niveaux de qualité des
défauts —
Partie 1: Acier, nickel, titane et leurs alliages
Reference number
ISO 13919-1:2019(E)
©
ISO 2019
ISO 13919-1:2019(E)
© ISO 2019
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 13919-1:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols (and abbreviated terms) . 2
5 Assessment of imperfections (adapt ed to ISO 5817 and ISO 12932) .2
Annex A (informative) Examples of determination of percentage (%) porosity .12
Annex B (informative) Additional information for use of this document .14
Bibliography .15
ISO 13919-1:2019(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 second edition cancels and replaces the first edition (ISO 13919-1:1996) which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the text has been editorial revised;
— the normative references have been updated;
— reference to ISO 6520-1 has been added to bring the document in line with ISO 5817.
A list of all parts in the ISO 13919 series can be found on the ISO website.
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 TC 44 documents, where they exist, are available from this page: https: //committee
.iso .org/sites/tc44/home/interpretation .html.
iv © ISO 2019 – All rights reserved

ISO 13919-1:2019(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 laser and electron beam welding imperfections based on
the designations given in ISO 6520-1.
Limits on some of the individual imperfections described in ISO 6520-1 have been prescribed directly
whereas some have been grouped together. The basic numerical referencing system from ISO 6520-1
has been used.
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. Therefore, it is possible 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 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 is expected to take account of design considerations,
subsequent processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service requirements
and conditions (e.g. temperature, pressure or vacuum levels, environment) and consequences of failure.
These considerations may lead to the need to include additional requirements on weld quality outside
of those referred to in this document. Economic factors are also important and are intended to include
not only the cost of welding, but also of inspection, test and repair.
Although this document includes types of imperfection relevant to the beam welding processes given
in the scope, 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
can require the use of one or more methods of non-destructive testing. The detection and sizing of
imperfections are dependent on the inspection methods and the extent of testing specified in the
application standard or contract.
The values given for imperfections are for welds produced using normal welding practice. More
stringent requirements as stated in quality level B can include the need for additional manufacturing
processes, e.g. grinding, dressing.
INTERNATIONAL STANDARD ISO 13919-1:2019(E)
Electron and laser-beam welded joints — Requirements
and recommendations on quality levels for
imperfections —
Part 1:
Steel, nickel, titanium and their alloys
1 Scope
This document gives requirements and recommendations on levels of imperfections in electron and
laser-beam welded joints in steel, nickel, titanium and their alloys. Three levels are given in such a way
as to permit application for a wide range of welded fabrications. Quality level B corresponds to the
highest requirement of the finished weld. The levels refer to production quality and not to the fitness-
for-purpose of the product manufactured.
This document applies to electron and laser beam welding of:
— steel, nickel, titanium and their alloys;
— all types of welds welded with or without additional filler wire;
— materials equal to or above 0,5 mm thickness for electron and laser beam welding.
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 is defined by the application s
...