EN ISO 17642-3:2005

SLOVENSKI STANDARD
01-maj-2005
3RUXãLWYHQLSUHVNXVL]YDURYQDNRYLQVNLKPDWHULDOLK±3UHVNXVLQDSRNDQMHY
KODGQHP]D]YDUQHVSRMH±2EORþQLQDþLQLYDUMHQMD±GHO3UHVNXVQD
REUHPHQMHQHPSUHVNXãDQFX,62
Destructive tests on welds in metallic materials - Cold cracking tests for weldments - Arc
welding processes - Part 3: Externally loaded tests (ISO 17642-3:2005)
Zerstörende Prüfung von Schweißverbindungen an metallischen Werkstoffen -
Kaltrissprüfungen für Schweißungen - Lichtbogenschweißprozesse - Teil 3:
Fremdbeanspruchte Prüfungen (ISO 17642-3:2005)
Essais destructifs des soudures sur matériaux métalliques - Essais de fissuration a froid
des assemblages soudés - Procédés de soudage a l'arc - Partie 3: Essais sur éprouvette
soumise a une charge extérieure (ISO 17642-3:2005)
Ta slovenski standard je istoveten z: EN ISO 17642-3:2005
ICS:
25.160.40 Varjeni spoji in vari Welded joints
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 17642-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2005
ICS 25.160.40
English version
Destructive tests on welds in metallic materials - Cold cracking
tests for weldments - Arc welding processes - Part 3: Externally
loaded tests (ISO 17642-3:2005)
Essais destructifs des soudures sur matériaux métalliques - Zerstörende Prüfung von Schweißverbindungen an
Essais de fissuration à froid des assemblages soudés - metallischen Werkstoffen - Kaltrissprüfungen für
Procédés de soudage à l'arc - Partie 3: Essais sur Schweißungen - Lichtbogenschweißprozesse - Teil 3:
éprouvette soumise à une charge extérieure (ISO 17642- Fremdbeanspruchte Prüfungen (ISO 17642-3:2005)
3:2005)
This European Standard was approved by CEN on 9 February 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17642-3:2005: E
worldwide for CEN national Members.

Contents page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Designation and symbols .4
5 Principle.4
6 Description of the tests.5
6.1 General.5
6.2 Implant-test.5
7 Test report .13
Annex A (informative) Test report for implant test .14
Annex ZA (normative) List of corresponding European and International Standards for which
equivalents are not given in the text.15

Foreword
This document (EN ISO 17642-3:2005) has been prepared by Technical Committee CEN/TC 121 “Welding”,
the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 “Welding and
allied processes”.
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 September 2005, and conflicting national standards shall be
withdrawn at the latest by September 2005.
EN ISO 17642 consists of the following parts, under the general title Destructive tests on welds in metallic
materials - Cold cracking tests for weldments - Arc welding processes:
- Part 1: General
- Part 2: Self-restraint tests
- Part 3: Externally loaded tests
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
1 Scope
This European Standard specifies the sizes of the backing plates, specimens and procedures for carrying out
externally loaded cold cracking tests by implant-test in order to obtain information about the cold cracking
sensitivity during welding.
This standard applies primarily but not exclusively to carbon, manganese and low alloy steels.
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.
EN 1043-1, Destructive tests on welds in metallic materials  Hardness testing  Part 1: Hardness test on
arc welded joints
EN ISO 3690, Welding and allied processes - Determination of hydrogen content in ferritic arc weld metal
(ISO 3690:2000)
CR ISO 15608, Welding - Guidelines for a metallic material grouping system (ISO/TR 15608:2000)
EN ISO 17642-1:2004, Destructive tests on welds in metallic materials - Cold cracking tests for weldments –
Arc welding processes - Part 1: General (ISO 17642-1:2004)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 17642-1:2004 apply.
4 Designation and symbols
The following designations and symbols given in Table 1 apply.
Table 1  Designation and symbols
Symbol Designation Unit
Implant-test
L Length of the test bead mm
d Implant-diameter mm
D Diameter of drilled holes mm
5 Principle
The externally loaded cold cracking tests serve the purpose of determining the cold cracking sensitivity.
According to EN ISO 17642-1:2004, Table 2, one testing procedure is available. By using the test procedure
the cracks are generated after welding of the test pieces.
The specimens provide quantitative - preheat temperature, heat input, diffusible hydrogen content and applied
stress - and qualitative information.
6 Description of the tests
6.1 General
6.1.1
The externally loaded cold cracking test is designed to assess the cold cracking sensitivity of parent materials
used for arc welding.
This test procedure applies to metal arc welding with covered electrodes and semi-automatic gas shielded
metal arc welding using solid and cored wires and submerged-arc welding.
The test provides a qualitative assessment (cracks or no cracks, single test) and determination of minimum
preheat temperature, minimum heat input, maximum diffusible hydrogen content or maximum applied stress
for freedom of cracks (crack/no crack boundary determination).
6.1.2 Single test
Where a fixed set of welding conditions is being used on a specific material, only one test weld shall be
evaluated.
6.1.3 Crack/no crack boundary determinations
Where a series of tests is to be used to obtain a crack/no crack boundary criterion the no-crack test apparently
defining the boundary shall be repeated. If this test also gives a no-crack result no further testing shall be
required. If cracking is observed in the duplicate test further shall be performed to define the boundary.
NOTE 1 Where heat input is the variable it is preferable that the boundary is defined within the range ± 0,5 kJ/mm and
that the duplicate tests are carried out within ± 0,1 kJ/mm.
NOTE 2 Where preheat is the variable it is preferable that the boundary is defined within the range of ± 12,5 °C.
6.2 Implant-test
6.2.1 Test materials
The implant specimen and the backing plate shall be from the same group according to CR ISO 15608.
6.2.2 Dimensions of the test pieces
The dimensions of the backing plate of the implant specimen shall be in accordance with Figures 1, 2 and 3,
and Table 2.
If the welding thermal conditions do not allow to use the recommended dimensions, other dimensions may
...