SIST EN ISO 5817:2007

Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006)

This International Standard provides quality levels of imperfections in fusion-welded joints (except for beam welding) in al l types of steel, nickel, titanium and their alloys. It applies to material thickness above 0,5 mm. It covers fully penetrated butt welds and all fillet welds. The priciples of this International Standard may also be applied to partial-penetration butt welds. Quality levels for beam welded joints in steel are presented in ISO 13919-1. Three quality levels are given in order to permit application to a wide range of welded fabrication. 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: - unalloyed and alloy steels; - nickel and nickel alloys; - titanium and titanium alloys; - manual, mechanized and automatic welding; - all welding positions; - all types of welds, e.g. butt welds, fillet welds and branch connections; - the following welding processes and their defined sub-processes in accordance with ISO 4063: - 11 metal-arc welding without gas protection; - 12 submerged-arc welding; - 13 gas-shielded metal-arc welding; - 14 gas-shielded welding with non-consumable electrodes; - 15 plasma arc welding; - 31 oxy-fuel gas welding (for steel only). Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.

Schweißen - Schmelzschweißverbindungen an Stahl, Nickel, Titan und deren Legierungen (ohne Strahlschweißen) - Bewertungsgruppen von Unregelmäßigkeiten (ISO 5817:2003, korrigierte Fassung:2005, einschließlich Technisches Corrigendum 1:2006)

Diese Internationale Norm enthält Bewertungsgruppen von Unregelmäßigkeiten an Schmelz¬schwei߬verbindungen (ausgenommen Strahlschweißen) für alle Sorten von Stahl, Nickel, Titan und deren Legierungen. Sie gilt für Werkstückdicken größer als 0,5 mm. Sie behandelt voll durchgeschweißte Stumpfnähte und alle Arten von Kehlnähten. Die Grundsätze dieser Norm dürfen auch für teilweise durchgeschweißte Stumpfnähte angewendet werden.
Bewertungsgruppen für strahlgeschweißte Verbindungen an Stahl enthält ISO 13919-1.
Die drei Bewertungsgruppen sind so festgelegt, dass sie eine breite Anwendung in der schweißtechnischen Fertigung erlauben. Sie werden bezeichnet durch Kennbuchstaben B, C und D. Bewertungsgruppe B entspricht den höchsten Anforderungen an die Schweißnaht. Die Bewertungsgruppen beziehen sich auf die Fertigungs¬qualität und nicht auf die Gebrauchstauglichkeit (siehe 3.2) des gefertigten Erzeugnisses.
Diese Internationale Norm gilt für:
?   unlegierte und legierte Stähle,
?   Nickel und Nickellegierungen,
?   Titan und Titanlegierungen,
?   manuelles, mechanisiertes und automatisches Schweißen,
?   alle Schweißpositionen,
?   alle Schweißverbindungen, z. B. Stumpfnähte, Kehlnähte und Rohrabzweigungen,
?   die folgenden Schweißprozesse und ihre zugeordneten Einzelprozesse nach ISO 4063:
?   11 Metalllichtbogenschweißen ohne Gasschutz;
?   12 Unterpulverschweißen;
?   13 Metallschutzgasschweißen;
?   14 Wolfram-Schutzgasschweißen;
?   15 Plasmaschweißen;
?   31 Gasschweißen mit Sauerstoff-Brenngas-Flamme (nur für Stahl).
Metallurgische Gesichtspunkte, z. B. Korngröße, Härte, werden von dieser Internationalen Norm nicht erfasst.

Soudage - Assemblages en acier, nickel, titane et leurs alliages soudés par fusion (soudage par faisceau exclu) - Niveaux de qualité par rapport aux défauts (ISO 5817:2003, version corrigée:2005, Corrigendum Technique 1:2006 inclus)

L'ISO 5817:2003 fournit des niveaux de qualité par rapport aux défauts dans les assemblages soudés par fusion (à l'exclusion du soudage par faisceau) sur tous types d'acier, de nickel, de titane et leurs alliages. Elle s'applique à des épaisseurs de matériau supérieures à 0,5 mm.
Trois niveaux de qualité sont donnés dans le but de permettre son 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 du produit fini.
L'ISO 5817:2003 s'applique
aux aciers alliés et non alliés;
au nickel et à ses alliages;
au titane et à ses alliages;
au soudage manuel, mécanisé et automatique;
à toutes les positions de soudage;
à tous les types de soudures, par exemple soudures bout à bout, soudures d'angle et piquages;
aux procédés de soudage suivants et à leurs sous-catégories définies dans l'ISO 4063:
11 soudage à l'arc avec électrode fusible sans protection gazeuse;
12 soudage à l'arc sous flux (en poudre);
13 soudage à l'arc avec électrode fusible sous protection gazeuse;
14 soudage à l'arc avec électrode réfractaire sous protection gazeuse;
15 soudage plasma;
31 soudage oxygaz (pour acier uniquement).
L'ISO 5817:2003 ne traite pas des aspects métallurgiques, par exemple grosseur de grain ou dureté.

Varjenje - Talilno zvarjeni spoji na jeklu, niklju, titanu in njihovih zlitinah (varjenje s snopom izključeno) - Stopnje sprejemljivosti nepopolnosti (ISO 5817:2003, popravljena verzija:2005 vsebuje tehnični popravek 1:2006)

General Information

• Status: Withdrawn
• Publication Date: 01-Nov-2007
• Withdrawal Date: 30-Mar-2014
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: VAR - Welding
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 14-Mar-2014
• Due Date: 06-Apr-2014
• Completion Date: 31-Mar-2014
• Ref Project: EN ISO 5817:2007 - Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006)

Relations

• Replaces: SIST EN ISO 5817:2004 - Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003)
• Effective Date: 01-Dec-2007
• Replaces: SIST EN ISO 5817:2004/AC:2006 - Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003/Cor.1:2006)
• Effective Date: 01-Jan-2008
• Replaced By: SIST EN ISO 5817:2014 - Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2014)
• Effective Date: 01-May-2014

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 5817:2007
01-december-2007
1DGRPHãþD
SIST EN ISO 5817:2004
SIST EN ISO 5817:2004/AC:2006
9DUMHQMH7DOLOQR]YDUMHQLVSRMLQDMHNOXQLNOMXWLWDQXLQQMLKRYLK]OLWLQDKYDUMHQMHV
VQRSRPL]NOMXþHQR6WRSQMHVSUHMHPOMLYRVWLQHSRSROQRVWL,62
SRSUDYOMHQDYHU]LMDYVHEXMHWHKQLþQLSRSUDYHN
Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) - Quality levels for imperfections (ISO 5817:2003, corrected version:2005,
including Technical Corrigendum 1:2006)
Schweißen - Schmelzschweißverbindungen an Stahl, Nickel, Titan und deren
Legierungen (ohne Strahlschweißen) - Bewertungsgruppen von Unregelmäßigkeiten
(ISO 5817:2003, korrigierte Fassung:2005, einschließlich Technisches Corrigendum
1:2006)
Soudage - Assemblages en acier, nickel, titane et leurs alliages soudés par fusion
(soudage par faisceau exclu) - Niveaux de qualité par rapport aux défauts (ISO
5817:2003, version corrigée:2005, Corrigendum Technique 1:2006 inclus)
Ta slovenski standard je istoveten z: EN ISO 5817:2007
ICS:
25.160.40
SIST EN ISO 5817:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 5817
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2007
ICS 25.160.40 Supersedes EN ISO 5817:2003
English Version
Welding - Fusion-welded joints in steel, nickel, titanium and their
alloys (beam welding excluded) - Quality levels for imperfections
(ISO 5817:2003, corrected version:2005, including Technical
Corrigendum 1:2006)
Soudage - Assemblages en acier, nickel, titane et leurs Schweißen - Schmelzschweißverbindungen an Stahl,
alliages soudés par fusion (soudage par faisceau exclu) - Nickel, Titan und deren Legierungen (ohne
Niveaux de qualité par rapport aux défauts (ISO 5817:2003, Strahlschweißen) - Bewertungsgruppen von
version corrigée:2005, Corrigendum Technique 1:2006 Unregelmäßigkeiten (ISO 5817:2003, korrigierte
inclus) Fassung:2005, einschließlich Technisches Corrigendum
1:2006)
This European Standard was approved by CEN on 18 July 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5817:2007: E
worldwide for CEN national Members.

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EN ISO 5817:2007 (E)






Foreword



The text of ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006
has been prepared by Technical Committee ISO/TC 44 "Welding and allied processes” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO
5817:2007 by Technical Committee CEN/TC 121 "Welding", 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 February 2008, and conflicting national
standards shall be withdrawn at the latest by February 2008.

This document supersedes EN ISO 5817:2003.

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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.


Endorsement notice

The text of ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006
has been approved by CEN as EN ISO 5817:2007 without any modifications.

2

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INTERNATIONAL ISO
STANDARD 5817
Second edition
2003-10-01
Corrected version
2005-11-01


Welding — Fusion-welded joints in steel,
nickel, titanium and their alloys (beam
welding excluded) — Quality levels for
imperfections
Soudage — Assemblages en acier, nickel, titane et leurs alliages
soudés par fusion (soudage par faisceau exclu) — Niveaux de qualité
par rapport aux défauts




Reference number
ISO 5817:2003(E)
©
ISO 2003

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ISO 5817:2003(E)
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ii © ISO 2003 — All rights reserved

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ISO 5817:2003(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 2
4 Symbols . 3
5 Assessment of imperfections. 4
Annex A (informative) Examples of determination of percentage (%) porosity . 22
Annex B (informative) Additional information and guidelines for use of this International
Standard . 24
Bibliography . 25

© ISO 2003 — All rights reserved iii

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ISO 5817:2003(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 5817 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 10, Unification of requirements in the field of metal welding.
This second edition cancels and replaces the first edition (ISO 5817:1992), which has been technically revised.
Extensive editorial and technical changes have been made throughout this corrected version. For example,
the first paragraph of the Scope has been modified.
iv © ISO 2003 — All rights reserved

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ISO 5817:2003(E)
Introduction
This International Standard should be used as a reference in the drafting of application codes and/or other
application standards. It contains a simplified selection of fusion weld imperfections based on the designations
given in ISO 6520-1.
Some of the 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 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 shall be
prescribed before the start of production, preferably at the enquiry or order stage. For special purposes,
additional details may 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 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 fusion welding processes
listed 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 testing of welds and does not include details of
recommended methods of detection or sizing by non-destructive means. It should be considered that there
are difficulties in using these limits to establish appropriate criteria applicable to non-destructive testing
methods such as ultrasonic, radiographic, eddy current, penetrate, magnetic particle testing and may need to
be supplemented by requirements for inspection, examining and testing.
The values given for imperfections are for welds produced using normal welding practice. Requirements for
smaller (more stringent) values as stated in quility level B may include additional manufacturing processes,
e.g. grinding, TIG dressing.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 10 via your national standards body. For a complete listing consult www.iso.org.
© ISO 2003 — All rights reserved v

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INTERNATIONAL STANDARD ISO 5817:2003(E)

Welding — Fusion-welded joints in steel, nickel, titanium and their
alloys (beam welding excluded) — Quality levels for imperfections
1 Scope
This International Standard provides quality levels of imperfections in fusion-welded joints (except for beam
welding) in all types of steel, nickel, titanium and their alloys. It applies to material thickness above 0,5 mm. It
covers fully penetrated butt welds and all fillet welds. The priciples of this International Standard may also be
applied to partial-penetration butt welds.
Quality levels for beam welded joints in steel are presented in ISO 13919-1.
Three quality levels are given in order to permit application to a wide range of welded fabrication. 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:
 unalloyed and alloy steels;
 nickel and nickel alloys;
 titanium and titanium alloys;
 manual, mechanized and automatic welding;
 all welding positions;
 all types of welds, e.g. butt welds, fillet welds and branch connections;
 the following welding processes and their defined sub-processes in accordance with ISO 4063:
 11 metal-arc welding without gas protection;
 12 submerged-arc welding;
 13 gas-shielded metal-arc welding;
 14 gas-shielded welding with non-consumable electrodes;
 15 plasma arc welding;
 31 oxy-fuel gas welding (for steel only).
Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard.
© ISO 2003 — All rights reserved 1

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ISO 5817:2003(E)
2 Normative references
The following referenced documents are indispensable for the application 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, Welded, brazed and soldered joints — Symbolic representation on drawings
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO 6520-1:1998, Welding and allied processes — Classification of geometric imperfections in metallic materials —
Part 1: Fusion welding
ISO 13919-1, Welding — Electron and laser-beam welded joints — Guidance on quality levels for imperfections —
Part 1: Steel
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 less 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 less than 25 % of the length of the weld
3.4
systematic imperfection
imperfections that are repeatedly distributed in the weld over the weld length to be examined, the size of a single
imperfection being within the specified limits
3.5
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).
3.6
cross-sectional area
area to be considered after fracture or sectioning
2 © ISO 2003 — All rights reserved

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ISO 5817:2003(E)

Key
1 X-ray detection 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
4 Symbols
The following symbols are used in Table 1.
a nominal throat thickness of the fillet weld (see also ISO 2553)
A area surrounding the gas pores
b width of weld reinforcement
d diameter of gas pore
d diameter of area surrounding the gas pores
A
h height or width of imperfection
l length of imperfection in longitudinal direction of the weld
l length of projected or cross-sectional area
p
s nominal butt weld thickness (see also ISO 2553)
t wall or plate thickness (nominal size)
w width of the weld or width or height of the cross-sectional area
p
z leg length of a fillet weld (see also ISO 2553)
α angle of weld toe
β angle of angular misalignment
© ISO 2003 — All rights reserved 3

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ISO 5817:2003(E)
5 Assessment of imperfections
Limits for imperfections are given in Table 1.
If, for the detection of imperfections, micro-examination is used, only those imperfections shall be considered which
can be detected with a maximum of tenfold magnification. Excluded from this are micro lack of fusion (see Table 1,
1.5) and microcracks (see Table 1, 2.2).
Systematic imperfections are only permitted in quality level D, provided other requirements of Table 1 are fulfilled.
A welded joint should usually be assessed separately for each individual type of imperfection (see Table 1, 1.1
to 3.2).
Different types of imperfection occurring at any cross-section of the joint need special consideration (see multiple
imperfections in Table 1, 4.1).
The limits for multiple imperfections (see Table 1) are only applicable for cases where the requirements for a single
imperfection are not exceeded.
Any two adjacent imperfections separated by a distance smaller than the major dimension of the smaller
imperfection shall be considered as a single imperfection.

4 © ISO 2003 — All rights reserved

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ISO 5817:2003(E)
© ISO 2003 — All rights reserved 5
Table 1 — Limits for imperfections
No. Reference Imperfection Remarks t Limits for imperfections for quality levels
to ISO designation mm
D C B
6520-1:1998
1 Surface imperfections
1.1 100 Crack — Not permitted Not permitted Not permitted
W 0,5
1.2 104 Crater crack — W 0,5 Not permitted Not permitted Not permitted
1.3 2017 Surface pore Maximum dimension of a single pore for 0,5 to 3
— butt welds d u 0,3 s Not permitted Not permitted
— fillet welds d u 0,3 a
Maximum dimension of a single pore for
— butt welds > 3 d u 0,3 s, but max. 3 mm d u 0,2 s, but max. 2 mm N
...