Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 14: Laser-arc hybrid welding of steels, nickel and nickel alloys (ISO 15614-14:2013)

This part of ISO 15614 specifies how a preliminary welding procedure specification is qualified by welding procedure tests. This part of ISO 15614 defines the conditions for the execution of welding procedure tests and the range of qualification for welding procedures for all practical welding operations within the range of variables listed in Clause 8.

Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe - Schweißverfahrensprüfung - Teil 14: Laserstrahl-Lichtbogen-Hybridschweißen von Stählen, Nickel und dessen Legierungen (ISO 15614-14:2013)

Dieser Teil von ISO 15614 legt fest, wie eine vorläufige Schweißanweisung durch Schweißverfahrens-prüfungen qualifiziert wird.
Dieser Teil von ISO 15614 definiert die Bedingungen für die Durchführung der Schweißverfahrensprüfungen und den Geltungsbereich für Schweißverfahren für alle praktischen schweißtechnischen Tätigkeiten innerhalb des Bereichs der Einflussgrößen in Abschnitt 8.
ANMERKUNG 1 Es ist möglich, dass zusätzliche Prüfungen durch Anwendungsnormen gefordert werden.
ANMERKUNG 2 Die verschiedenen Teile von ISO 15614 umfassen ihrerseits eine Normenreihe von internationalen Schweißnormen; Einzelheiten sind in ISO 15607:2003, Anhang A, angegeben.

Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques - Épreuve de qualification d'un mode opératoire de soudage - Partie 14: Soudage hybride laser-arc des aciers, du nickel et des alliages du nickel (ISO 15614-14:2013)

L'ISO 15614-14:2013 spécifie comment un descriptif de mode opératoire de soudage préliminaire est qualifié par une épreuve.
L'ISO 15614-14:2013 définit les conditions d'exécution des épreuves de qualification de mode opératoire de soudage et le domaine de validité du mode opératoire de soudage, pour toutes les opérations pratiques de soudage englobant la liste des variables mentionnées.

Popis in kvalifikacija varilnih postopkov za kovinske materiale - Preskus varilnega postopka - 14. del: Hibridno lasersko-obločno varjenje jekel, niklja in nikljevih zlitin (ISO 15614-14:2013)

Ta del ISO 15614 določa, kako se predhodna specifikacija varilnega postopka razvrsti s preskusi varilnih postopkov. Ta del ISO 15614 določa pogoje za izvajanje preskusov varilnih postopkov in razpon razvrščanja za varilne postopke za vse praktične varilne operacije v okviru spremenljivk iz točke 8.

General Information

Status
Published
Public Enquiry End Date
24-Jul-2011
Publication Date
03-Jul-2013
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Jul-2013
Due Date
06-Sep-2013
Completion Date
04-Jul-2013

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SLOVENSKI STANDARD
SIST EN ISO 15614-14:2013
01-september-2013

3RSLVLQNYDOLILNDFLMDYDULOQLKSRVWRSNRY]DNRYLQVNHPDWHULDOH3UHVNXVYDULOQHJD

SRVWRSNDGHO+LEULGQRODVHUVNRREORþQRYDUMHQMHMHNHOQLNOMDLQQLNOMHYLK]OLWLQ

,62

Specification and qualification of welding procedures for metallic materials - Welding

procedure test - Part 14: Laser-arc hybrid welding of steels, nickel and nickel alloys (ISO

15614-14:2013)
Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe -
Schweißverfahrensprüfung - Teil 14: Laserstrahl-Lichtbogen-Hybridschweißen von
Stählen, Nickel und dessen Legierungen (ISO 15614-14:2013)
Descriptif et qualification d'un mode opératoire de soudage pour les matériaux

métalliques - Épreuve de qualification d'un mode opératoire de soudage - Partie 14:

Soudage hybride laser-arc des aciers, du nickel et des alliages du nickel (ISO 15614-

14:2013)
Ta slovenski standard je istoveten z: EN ISO 15614-14:2013
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
77.120.40 Nikelj, krom in njune zlitine Nickel, chromium and their
alloys
SIST EN ISO 15614-14:2013 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15614-14:2013
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SIST EN ISO 15614-14:2013
EUROPEAN STANDARD
EN ISO 15614-14
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2013
ICS 25.160.10
English Version
Specification and qualification of welding procedures for metallic
materials - Welding procedure test - Part 14: Laser-arc hybrid
welding of steels, nickel and nickel alloys (ISO 15614-14:2013)

Descriptif et qualification d'un mode opératoire de soudage Anforderung und Qualifizierung von Schweißverfahren für

pour les matériaux métalliques - Épreuve de qualification metallische Werkstoffe - Schweißverfahrensprüfung - Teil

d'un mode opératoire de soudage - Partie 14: Soudage 14: Laserstrahl-Lichtbogen-Hybridschweißen von Stählen,

hybride laser-arc des aciers, du nickel et des alliages de Nickel und dessen Legierungen (ISO 15614-14:2013)

nickel (ISO 15614-14:2013)
This European Standard was approved by CEN on 14 March 2013.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15614-14:2013: E

worldwide for CEN national Members.
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SIST EN ISO 15614-14:2013
EN ISO 15614-14:2013 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO 15614-14:2013
EN ISO 15614-14:2013 (E)
Foreword

This document (EN ISO 15614-14:2013) 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 December 2013, and conflicting national standards shall be withdrawn

at the latest by December 2013.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 15614-14:2013 has been approved by CEN as EN ISO 15614-14:2013 without any

modification.
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SIST EN ISO 15614-14:2013
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SIST EN ISO 15614-14:2013
INTERNATIONAL ISO
STANDARD 15614-14
First edition
2013-06-15
Specification and qualification of
welding procedures for metallic
materials — Welding procedure test —
Part 14:
Laser-arc hybrid welding of steels,
nickel and nickel alloys
Descriptif et qualification d’un mode opératoire de soudage pour
les matériaux métalliques — Épreuve de qualification d’un mode
opératoire de soudage —
Partie 14: Soudage hybride laser-arc des aciers, du nickel et des
alliages de nickel
Reference number
ISO 15614-14:2013(E)
ISO 2013
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013

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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope .................................................................................................................................................................................................................................1

2 Normative references ......................................................................................................................................................................................1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Preliminary welding procedure specification ....................................................................................................................... 2

5 Welding procedure test ................................................................................................................................................................................. 3

6 Test piece ...................................................................................................................................................................................................................... 3

6.1 General ........................................................................................................................................................................................................... 3

6.2 Shape and dimensions of test pieces ................................................................................................................................... 3

6.3 Welding of test pieces ....................................................................................................................................................................... 4

7 Examination and testing ...............................................................................................................................................................................8

7.1 Extent of examination and testing ......................................................................................................................................... 8

7.2 Location and taking of test specimens ............................................................................................................................... 9

7.3 Non-destructive testing ................................................................................................................................................................14

7.4 Destructive testing ............................................................................................................................................................................14

7.5 Quality levels..........................................................................................................................................................................................16

7.6 Re-testing ..................................................................................................................................................................................................17

8 Range of qualification ..................................................................................................................................................................................17

8.1 General ........................................................................................................................................................................................................17

8.2 Related to the manufacturer ....................................................................................................................................................17

8.3 Related to the parent material ................................................................................................................................................17

8.4 Related to welding process ........................................................................................................................................................21

8.5 Related to welding position ......................................................................................................................................................21

8.6 Related to type of joint or weld..............................................................................................................................................21

8.7 Related to number of layers ......................................................................................................................................................21

8.8 Related to filler material ..............................................................................................................................................................21

8.9 Related to type of current ...........................................................................................................................................................21

8.10 Related to preheating and interpass temperature ................................................................................................21

8.11 Related to post-weld heat treatment ................................................................................................................................21

8.12 Nominal heat input ...........................................................................................................................................................................22

8.13 Duration of validity ..........................................................................................................................................................................22

9 Welding procedure qualification record (WPQR) ...........................................................................................................22

Annex A (informative) Welding procedure qualification record template (WPQR) ........................................23

Bibliography .............................................................................................................................................................................................................................24

© ISO 2013 – All rights reserved iii
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(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 15614-14 was prepared by Technical Committee ISO/TC 44, Welding and allied processes,

Subcommittee SC 10, Unification of requirements in the field of metal welding.

ISO 15614 consists of the following parts, under the general title Specification and qualification of welding

procedures for metallic materials — Welding procedure test:

— Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys

— Part 2: Arc welding of aluminium and its alloys
— Part 3: Fusion welding of non-alloyed and low-alloyed cast irons
— Part 4: Finishing welding of aluminium castings
— Part 5: Arc welding of titanium, zirconium and their alloys
— Part 6: Arc and gas welding of copper and its alloys
— Part 7: Overlay welding
— Part 8: Welding of tubes to tube-plate joints
— Part 10: Hyperbaric dry welding:
— Part 11: Electron and laser beam welding
— Part 12: Spot, seam and projection welding
— Part 13: Upset (resistance butt) and flash welding
— Part 14: Laser-arc hybrid welding of steels, nickel and nickel alloys

Requests for official interpretations of any aspect of this part of ISO 15614 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.
iv © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Introduction

It is intended that all new welding procedure tests be carried out in accordance with this part of

ISO 15614 from the date of its issue.

However, this part of ISO 15614 does not invalidate previous welding procedure tests made to former

national standards or specifications.

Also, where additional tests shall be carried out to make the qualification technically equivalent, it is

only necessary to do the additional tests on a test piece made in accordance with this part of ISO 15614.

© ISO 2013 – All rights reserved v
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SIST EN ISO 15614-14:2013
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SIST EN ISO 15614-14:2013
INTERNATIONAL STANDARD ISO 15614-14:2013(E)
Specification and qualification of welding procedures for
metallic materials — Welding procedure test —
Part 14:
Laser-arc hybrid welding of steels, nickel and nickel alloys
1 Scope

This part of ISO 15614 specifies how a preliminary welding procedure specification is qualified by

welding procedure tests.

This part of ISO 15614 defines the conditions for the execution of welding procedure tests and the range

of qualification for welding procedures for all practical welding operations within the range of variables

listed in Clause 8.

NOTE 1 It is possible that additional tests are required by applications standards.

NOTE 2 The various parts of ISO 15614 comprise, in their turn, a series of International Standards on welding,

details of which are given in ISO 15607:2003, Annex A.
2 Normative references

The following referenced documents, in whole or in part, are normatively referenced in this document

and are indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 3452-1, Non-destructive testing — Penetrant testing — Part 1: General principles

ISO 4136, Destructive tests on welds in metallic materials — Transverse tensile test

ISO 5173, Destructive tests on welds in metallic materials — Bend tests
ISO 6947, Welding and allied processes — Welding positions

ISO 9016, Destructive tests on welds in metallic materials — Impact tests — Test specimen location, notch

orientation and examination

ISO 12932, Welding — Laser-arc hybrid welding of steels, nickel and nickel alloys — Quality levels for

imperfections

ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for mechanized

and automatic welding of metallic materials

ISO 15607:2003, Specification and qualification of welding procedures for metallic materials — General rules

ISO/TR 15608, Welding — Guidelines for a metallic materials grouping system

ISO 15609-6, Specification and qualification of welding procedures for metallic materials — Welding

procedure specification — Part 6: Laser-arc hybrid welding

ISO 15613, Specification and qualification of welding procedures for metallic materials — Qualification

based on pre-production welding test
ISO 17636 (all parts), Non-destructive testing of welds — Radiographic testing
© ISO 2013 – All rights reserved 1
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)

ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints

ISO 17638, Non-destructive testing of welds — Magnetic particle testing

ISO 17639, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds

ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 15607 and the following apply.

3.1
hybrid welding

welding in which two or more welding processes are used simultaneously in the same weld pool

Note 1 to entry: Hybrid welding is different than combinations of processes where at least two melt pools exist

which are completely separated by a solid component in the solidification phases. Examples of a combined process

(a) and a laser-arc hybrid welding process (b) are given in Figure 1 by using a laser beam and the additional

energy source of an arc.
a) Combined process
b) Hybrid process
Key
1 laser beam
2 torch
Figure 1 — Combination of welding processes
4 Preliminary welding procedure specification

The preliminary welding procedure specification (pWPS) shall be prepared in accordance with ISO 15609-6.

2 © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
5 Welding procedure test

The welding and testing of test pieces shall be in accordance with Clauses 6 and 7.

The welding operator who undertakes the welding procedure test satisfactorily in accordance with

this part of ISO 15614 shall be qualified for the appropriate range of qualification in accordance with

ISO 14732 provided the relevant testing requirements are met.
6 Test piece
6.1 General

The welded joint to which the welding procedure relates in production shall be represented by making a

standardized test piece or pieces, as specified in 6.2. Where the production joint geometry requirements

do not represent the standardized test piece as shown in this part of ISO 15614, the use of ISO 15613

shall be required.

The length or number of test pieces shall be sufficient to allow all required tests to be carried out.

Additional test pieces, or longer test pieces than the minimum size, can be prepared in order to allow for

extra or for re-testing specimens (see 7.6). Application standards can require larger test pieces.

If required by the application standard, the direction of plate rolling shall be marked on the test piece

when impact tests are required to be taken in the heat-affected zone (HAZ).

The plate thickness or pipe outside diameter and wall thickness of the test pieces shall be selected in

accordance with 8.3.2.1 to 8.3.2.3.
6.2 Shape and dimensions of test pieces
6.2.1 Butt joint in plate
The test piece shall be prepared in accordance with Figure 2.
It may be used for fully and partially penetrated butt welds.
6.2.2 Butt joint in pipe
The test piece shall be prepared in accordance with Figure 3.
It may be used for fully and partially penetrated butt welds.

NOTE The word “pipe”, alone or in combination, is used to mean “pipe”, “tube” or “hollow section”.

6.2.3 T-joint
The test piece shall be prepared in accordance with Figure 4.
It may be used for fully and partially penetrated butt welds or fillet welds.
6.2.4 Corner joint
The test piece shall be prepared in accordance with Figure 5.
It may be used for fully and partially penetrated butt welds or fillet welds.
© ISO 2013 – All rights reserved 3
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
6.2.5 Branch connection

The pipe to pipe test piece shall be prepared in accordance with Figure 6. The angle α is the minimum

to be used in production.

It may be used for fully and partially penetrated joints (set-on or set-in or set-through joint) and for

fillet welds.

The pipe to plate test piece shall be prepared in accordance with Figure 7. The angle α is the minimum

to be used in production.

It may be used for fully and partially penetrated joints (set-on or set-in or set-through joint) and for

fillet welds.
6.3 Welding of test pieces

Preparation and welding of test pieces shall be carried out in accordance with the pWPS, and under

the general conditions of welding in production which they shall represent. Welding positions and

limitations for the angle of slope and rotation of the test piece shall be in accordance with ISO 6947. If

tack welds are to be fused into the final joint, they shall be included in the test piece.

Welding and testing of the test pieces shall be witnessed by an examiner or an examining body.

Key
1 joint preparation and fit-up as detailed in the pWPS
t material thickness
Minimum width 150 mm.
Minimum length 350 mm.
Figure 2 — Test piece for a butt joint in plate
4 © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Key
1 joint preparation and fit-up as detailed in the pWPS
a minimum length 150 mm
D outside pipe diameter
t material thickness
Figure 3 — Test piece for a butt joint in pipe
Key
1 joint preparation and fit-up as detailed in the pWPS
a , a minimum width 150 mm
1 2
b minimum length 350 mm
t material thickness, plate 1
t material thickness, plate 2
Figure 4 — Test piece for a T-joint
© ISO 2013 – All rights reserved 5
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Key
1 joint preparation and fit-up as detailed in the pWPS
a , a minimum width 150 mm
1 2
b minimum length 350 mm
t material thickness, plate 1
t material thickness, plate 2
Figure 5 — Test piece for a corner joint
6 © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Key
1 joint preparation and fit-up as detailed in the pWPS
α branch angle
a minimum length 150 mm
D outside diameter of the main pipe
D outside diameter of the branch pipe
t main pipe material thickness
t branch pipe material thickness
Figure 6 — Test piece for a branch connection — Pipe to pipe
© ISO 2013 – All rights reserved 7
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Key
α branch angle
1 joint preparation and fit-up as detailed in the pWPS
a dimension of the plate; a ≥ D + 6t ; minimum dimension D + 150 mm
D outside diameter of the branch pipe
l branch pipe length; minimum length 80 mm
t plate material thickness
t branch pipe material thickness
Figure 7 — Test piece for a branch connection — Pipe to plate
7 Examination and testing
7.1 Extent of examination and testing

Testing includes both non-destructive testing and destructive testing which shall be in accordance with

the requirements of Table 1.

NOTE Specific service, material or manufacturing conditions can require more comprehensive testing

than is specified by this part of ISO 15614 in order to gain more information and to avoid repeating the welding

procedure test at a later date just to obtain additional test data.
An application standard may specify additional tests, e.g.:
— longitudinal weld tensile test;
— all weld metal bend test;
— corrosion tests;
— chemical analysis;
— microscopic examination;
— delta ferrite examination;
— cruciform test.
8 © ISO 2013 – All rights reserved
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SIST EN ISO 15614-14:2013
ISO 15614-14:2013(E)
Table 1 — Examination and testing of the test pieces
Test piece Type of test Extent of testing
Butt joint with full penetration (see Visual 100 %
Figures 2 and 3) Radiographic or ultrasonic 100 %
Surface crack detection 100 %
Transverse tensile test Two specimens
Transverse bend test Four specimens
Impact test Two sets
Hardness test Required
Macroscopic examination At least one specimen
T- joint and corner joint with full Visual 100 %
b,g
penetration (see Figures 4 and 5) Surface crack detection 100 %
a,g,h
Branch connection with full pen- Ultrasonic or radiographic 100 %
e,g
etration (see Figures 6 and 7) Hardness test Required
f, g
Macroscopic examination At least two specimens
Butt joint, T-joint, corner joint and Visual 100 %
b,g
branch connection with partial Surface crack detection 100 %
e,g
penetration (see Figures 2 to 7) Hardness test Required
Macroscopic examination Two specimens

Ultrasonic testing shall not be used for t < 8 mm and not for material groups 8, 10, 41 to 48. For information on material

groups, see 8.3.1.

Penetration testing or magnetic particle testing. For non-magnetic materials, penetration testing.

For bend tests, see 7.4.3.

One set in the weld metal and one set in the HAZ for materials ≥12 mm thick and having specified impact properties.

Application standards may require impact testing below 12 mm thick. The testing temperature shall be chosen by

the manufacturer with regard to the application or application standard, but need not be lower than the parent metal

specification. For additional tests see 7.4.5.
Not required for parent metals: subgroup 1.1, and groups 8, 41 to 48.

One section is required for a butt weld in plate. Two sections are required for a butt weld in pipe, additionally one section

from each overlap portion with different parameters. For each standard welding position in accordance with ISO 6947.

Tests as detailed do not provide information on the mechanical properties of the joint. Where these properties are

relevant to the application, an additional qualification shall also be held, e.g. a butt weld qualification.

For outside diameter ≤50 mm no ultrasonic test is required. For outside diameter >50 mm and where it is not technically

possible to carry out ultrasonic examination, a radiographic examination shall be carried out provided the joint con

...

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