SIST EN ISO 25239-4:2012
(Main)Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)
Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)
This standard specifies requirements for the friction stir welding, and variants thereof, of aluminium components manufactured from aluminium. It specifies requirements particular to friction stir welding related to welding knowledge, quality need, welding procedure
specification, welding procedure approval and welding personnel.
Rührreibschweißen - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweißverfahren (ISO 25239-4:2011)
Diese Internationale Norm legt Anforderungen und die Qualifizierung von Schweißverfahren für das Rührreib¬schweißen von Aluminium fest. Der Begriff Aluminium bezieht sich in dieser Norm auf Aluminium und seine Legierungen.
Diese Norm gilt nicht für das Rührreibpunktschweißen.
ANMERKUNG Betriebsanforderungen, Werkstoffe oder Herstellbedingungen können umfassendere Prüfungen als in dieser Norm festgelegt erfordern.
Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opératoires de soudage (ISO 25239-4:2011)
L'ISO 25239-4:2011 spécifie les exigences relatives au descriptif et à la qualification des modes opératoires de soudage pour le soudage par friction-malaxage de l'aluminium. Dans l'ISO 25239-4:2011, le terme «aluminium» se rapporte à l'aluminium et ses alliages.
L'ISO 25239-4:2011 ne s'applique pas au soudage par points par friction-malaxage.
Varjenje z gnetenjem - Aluminij - 4. del: Zahteve in kvalifikacija varilnega postopka (ISO 25239-4:2011)
Ta del standarda ISO 25239 določa zahteve za specifikacijo in kvalifikacijo varilnih postopkov za varjenje aluminija z gnetenjem. V tem delu standarda ISO 25239 se izraz »aluminij« nanaša na aluminij in njegove zlitine. Specifikacija varilnega postopka (WPS) je potrebna kot podlaga za načrtovanje varjenja in kontrolo kakovosti med njim. Varjenje se v terminologiji standardov za sisteme kakovosti obravnava kot poseben postopek. V standardih za sisteme kakovosti je običajno navedena zahteva, da se posebni postopki izvedejo v skladu s pisnimi specifikacijami za postopek. Metalurški odkloni predstavljajo posebno težavo. Ker nedestruktivno preskušanje mehanskih lastnosti na sedanji ravni tehnologije ni mogoče, je bila določena zbirka pravil za kvalifikacijo varjenja pred izdajo specifikacije varilnega postopka v dejansko proizvodnjo. Ta del standarda ISO 25239 določa ta pravila.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varjenje z gnetenjem - Aluminij - 4. del: Zahteve in kvalifikacija varilnega postopka (ISO 25239-4:2011)Rührreibschweißen - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweißverfahren (ISO 25239-4:2011)Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opératoires de soudage (ISO 25239-4:2011)Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)77.120.10Aluminij in aluminijeve zlitineAluminium and aluminium alloys25.160.10Varilni postopki in varjenjeWelding processesICS:Ta slovenski standard je istoveten z:EN ISO 25239-4:2011SIST EN ISO 25239-4:2012en,fr01-marec-2012SIST EN ISO 25239-4:2012SLOVENSKI
STANDARD
SIST EN ISO 25239-4:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 25239-4
December 2011 ICS 25.160.10 English Version
Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)
Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opératoires de soudage (ISO 25239-4:2011)
Rührreibschweißen - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweißverfahren (ISO 25239-4:2011) This European Standard was approved by CEN on 4 June 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 25239-4:2011: ESIST EN ISO 25239-4:2012
EN ISO 25239-4:2011 (E) 2 Contents Page Foreword .3 SIST EN ISO 25239-4:2012
EN ISO 25239-4:2011 (E) 3 Foreword This document (EN ISO 25239-4:2011) has been prepared by the International Institute of Welding in collaboration with 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 June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 25239-4:2011 has been approved by CEN as a EN ISO 25239-4:2011 without any modification.
SIST EN ISO 25239-4:2012
SIST EN ISO 25239-4:2012
Reference numberISO 25239-4:2011(E)© ISO 2011
INTERNATIONAL STANDARD ISO25239-4First edition2011-12-15Friction stir welding — Aluminium Part 4: Specification and qualification of welding procedures Soudage par friction-malaxage — Aluminium Partie 4: Descriptif et qualification des modes opératoires de soudage
SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E)
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ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 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.
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ii © ISO 2011 – All rights reserved
SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved iii Contents Page Foreword . iv Introduction . v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions . 2 4 Symbols and abbreviated terms . 2 5 Development and qualification of welding procedures . 2 5.1 General . 2 5.2 Technical content of a pWPS . 3 6 Qualification based on a welding procedure test . 5 6.1 General . 5 6.2 Test pieces . 5 6.3 Examination and testing of test pieces . 7 6.4 Range of qualification . 13 6.5 Welding procedure qualification record . 13 7 Qualification based on pre-production welding test . 13 7.1 General . 13 7.2 Test pieces . 14 7.3 Examination and testing of test pieces . 14 7.4 Range of qualification . 14 7.5 Welding procedure qualification record . 14 Annex A (informative)
Preliminary welding procedure specification . 15 Annex B (informative)
Non-destructive testing . 16 Annex C (informative)
Hammer S-bend test of lap welds . 17 Annex D (informative)
Welding procedure qualification record form. 19 Bibliography . 22
SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) iv © ISO 2011 – All rights reserved 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. ISO 25239-4 was prepared by the International Institute of Welding, which has been approved as an international standardizing body in the field of welding by the ISO Council. ISO 25239 consists of the following parts, under the general title Friction stir welding — Aluminium: Part 1: Vocabulary Part 2: Design of weld joints Part 3: Qualification of welding operators Part 4: Specification and qualification of welding procedures Part 5: Quality and inspection requirements Requests for official interpretations of any aspect of this part of ISO 25239 should be directed to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response.
SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved v Introduction Welding processes are widely used in the fabrication of engineered structures. During the second half of the twentieth century, fusion welding processes, wherein fusion is obtained by the melting of parent material and usually a filler metal, dominated the welding of large structures. Then, in 1991, Wayne Thomas at TWI invented friction stir welding (FSW), which is carried out entirely in the solid phase (no melting). The increasing use of FSW has created the need for this International Standard in order to ensure that welding is carried out in the most effective way and that appropriate control is exercised over all aspects of the operation. This International Standard focuses on the FSW of aluminium because, at the time of publication, the majority of commercial applications for FSW involved aluminium. Examples include railway carriages, consumer products, food processing equipment, aerospace structures, and marine vessels. To parts of this International Standard are listed in the foreword. Part 1 defines terms specific to FSW. Part 2 specifies design requirements for FSW joints in aluminium. Part 3 specifies requirements for the qualification of an operator for the FSW of aluminium. Part 4 specifies requirements for the specification and qualification of welding procedures for the FSW of aluminium. A welding procedure specification (WPS) is needed to provide a basis for planning welding operations and for quality control during welding. Welding is considered a special process in the terminology of standards for quality systems. Standards for quality systems usually require that special processes be carried out in accordance with written procedure specifications. Metallurgical deviations constitute a special problem. Because non-destructive testing of the mechanical properties is impossible at the present level of technology, this has resulted in the establishment of a set of rules for qualification of the welding procedure prior to the release of the WPS to actual production. This part of ISO 25239 defines these rules. Part 5 specifies a method for determining the capability of a manufacturer to use the FSW process for the production of aluminium products of the specified quality. It defines specific quality requirements, but does not assign those requirements to any specific product group. To be effective, welded structures should be free from serious problems in production and in service. To achieve that goal, it is necessary to provide controls from the design phase through material selection, fabrication, and inspection. For example, poor design can create serious and costly difficulties in the workshop, on site, or in service. Incorrect material selection can result in welding problems, such as cracking. Welding procedures have to be correctly formulated and qualified to avoid imperfections. To ensure the fabrication of a quality product, management should understand the sources of potential trouble and introduce appropriate quality and inspection procedures. Supervision should be implemented to ensure that the specified quality is achieved. The International Organization for Standardization (ISO) draws attention to the fact that it is claimed that compliance with this document may involve the use of patents concerning friction stir welding given in Clauses 5 to 7. ISO takes no position concerning the evidence, validity and scope of this patent right. SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) vi © ISO 2011 – All rights reserved The following holder of this patent right has assured ISO that it is willing to negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of the holder of this patent right is registered with ISO.
Further information may be obtained from: TWI Ltd Granta Park, Great Abington CAMBRIDGE CB21 6AL United Kingdom Telephone: +44 1223 891162 (international); 01223 891162 (national) Telefax:
+44 1223 892588 (international); 01223 892588 (national) E-mail:
twi@twi.co.uk
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. ISO shall not be held responsible for identifying any or all such patent rights.
SIST EN ISO 25239-4:2012
INTERNATIONAL STANDARD ISO 25239-4:2011(E) © ISO 2011 – All rights reserved 1 Friction stir welding — Aluminium Part 4: Specification and qualification of welding procedures 1 Scope This part of ISO 25239 specifies the requirements for the specification and qualification of welding procedures for the friction stir welding (FSW) of aluminium. In this part of ISO 25239, the term “aluminium” refers to aluminium and its alloys. This part of ISO 25239 does not apply to friction stir spot welding. NOTE Service requirements, materials or manufacturing conditions can require more comprehensive testing than is specified in this part of ISO 25239. 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 209, Aluminium and aluminium alloys — Chemical composition ISO 857-1, Welding and allied processes — Vocabulary — Part 1: Metal welding processes ISO 2107, Aluminium and aluminium alloys — Wrought products — Temper designations ISO 3134 (all parts), Light metals and their alloys — Terms and definitions ISO 4136, Destructive tests on welds in metallic materials — Transverse tensile test ISO 5173, Destructive tests on welds in metallic materials — Bend tests ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials — Part 1: Fusion welding ISO 9017, Destructive tests on welds in metallic materials — Fracture test ISO 10042, Welding — Arc-welded joints in aluminium and its alloys — Quality levels for imperfections ISO 13916, Welding — Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14175, Welding consumables — Gases
and gas mixtures for fusion welding and allied processes ISO 15607:2003, Specification and qualification of welding procedures for metallic materials — General rules SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) 2 © ISO 2011 – All rights reserved ISO 15613, Specification and qualification of welding procedures for metallic materials — Qualification based on pre-production welding test ISO 15614-2, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 2: Arc welding of aluminium and its alloys ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints ISO 17639, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds ISO/TR 17671-1, Welding — Recommendations for welding of metallic materials — Part 1: General guidance for arc welding ISO 25239-1, Friction stir welding — Aluminium — Part 1: Vocabulary ISO 25239-5:2011, Friction stir welding — Aluminium — Part 5: Quality and inspection requirements ISO 80000-1:2009, Quantities and units — Part 1: General 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 209, ISO 857-1, ISO 3134, ISO 6520-1, ISO 10042, ISO 15607, ISO 15613, ISO 15614-2, ISO/TR 17671-1, and ISO 25239-1 apply. 4 Symbols and abbreviated terms For the purposes of qualification of welding procedures, the abbreviations listed in ISO 15607:2003, Table 1, apply. 5 Development and qualification of welding procedures 5.1 General Qualification of welding procedures shall be performed prior to production welding. The manufacturer shall prepare a preliminary welding procedure specification (pWPS) and shall ensure that it is applicable for production using experience from previous production jobs and the general fund of knowledge of welding technology. A pWPS shall be used as the basis for the establishment of a welding procedure qualification record (WPQR). The pWPS shall be tested in accordance with one of the methods listed in Clause 6 (welding procedure test) or Clause 7 (pre-production welding test). Clause 6 shall be used when the production part or joint geometry is accurately represented by a standardized test piece or pieces, as shown in 6.2. Clause 7 shall be used when the production part or joint geometry is not accurately represented by the standardized test pieces, as shown in 6.2. The information required in a pWPS is given in 5.2. NOTE For some applications, it can be necessary to supplement or reduce the list. A welding procedure specification (WPS) covers a certain range of parent material thicknesses as well as a range of aluminium alloys. Ranges and tolerances in accordance with the relevant International Standard (see Clause 2) and the manufacturer's experience shall be specified when appropriate. An example of a pWPS form is shown in Annex A. SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved 3 5.2 Technical content of a pWPS 5.2.1 General The following information, as a minimum, shall be included in a pWPS. 5.2.2 Manufacturer information identification of the manufacturer identification of the pWPS 5.2.3 Parent material type(s), temper(s), and reference standard(s) 5.2.4 Parent material dimensions thickness of the members comprising the welded joint outside diameter of tube 5.2.5 Equipment identification model serial number manufacturer 5.2.6 Tool identification material drawing or drawing number 5.2.7 Clamping arrangement method and type of jigging, fixtures, rollers, and backing (dimensions and material) tack welding process and conditions, when required — the pWPS shall indicate any required tack welding or prohibited tack welding 5.2.8 Joint design sketch of the welded joint design and dimensions weld run sequence and direction, if applicable run-on and run-off plates, material type, reference standard, and dimensions of run-on and run-off plates placement of exit hole 5.2.9 Joint preparation and cleaning methods 5.2.10 Welding details tool motion (e.g. rotation in either the clockwise or anticlockwise direction, rotation speed including downward and upward motion) SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) 4 © ISO 2011 – All rights reserved tool position (e.g. heel plunge depth) or axial force, as applicable tool cooling (internal, external, cooling medium), if applicable tilt angle side tilt angle, lateral offset dwell time at start of weld dwell time at end of weld joint configuration weld overlap area (WOA) for a butt joint or lap joint in tube lap joint: advancing or retreating side near the upper sheet edge, direction of welding 5.2.11 Welding speed welding speed, including details of any changes during welding ramp-up/ramp-down or upslope/downslope speeds when applied 5.2.12 Welding position applicable welding positions 5.2.13 Pre-weld heat treatment when pre-weld heat treatment should be applied 5.2.14 Preheating temperature when preheating should be applied use of ISO 13916 for the application of this subclause, 5.2.15 and 5.2.16 when preheating of the friction stir welding tool should be applied 5.2.15 Preheat maintenance temperature
when preheat maintenance should be applied 5.2.16 Interpass temperature
when an interpass temperature should be maintained 5.2.17 Shielding gas designation in accordance with ISO 14175 and, when applicable, the composition, manufacturer and name, and gas flow rate 5.2.18 postweld processing solution heat treatment, ageing, stress relieving (or the methods to correct distortion and straighten distorted parts), removal of toe flash or any other postweld processing of the weldment SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved 5 postweld heat treatment temperature range and minimum time for postweld heat treatment or ageing shall be specified or reference shall be made to other standards which specify this information 6 Qualification based on a welding procedure test 6.1 General The preparation, welding, and testing of test pieces shall be in accordance with 6.2 and 6.3. Fulfilment of the requirements of this part of ISO 15239 can also serve to qualify the welding operator (see ISO 25239-3). 6.2 Test pieces 6.2.1 Shape and dimensions of test pieces 6.2.1.1 General The length or number of test pieces shall be sufficient to allow all required tests to be performed. Test pieces longer than the minimum size may be used to allow for the provision of extra specimens, for re-testing specimens or both (see 6.3.4). The rolling direction or extrusion direction shall be marked on the test piece. 6.2.1.2 Butt joint in sheet with full penetration The test piece shall be prepared in accordance with Figure 1. Dimensions in millimetres tab ≥ 150l ≥ 500b ≥ 150 Key b width of components l length of components t material thickness a Joint preparation and fit-up, as specified in the pWPS. Figure 1 — Test piece for a butt joint in sheet with full penetration SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) 6 © ISO 2011 – All rights reserved 6.2.1.3 Butt joint in tube with full penetration The test piece shall be prepared in accordance with Figure 2. Dimensions in millimetres tal ≥ 150l ≥ 150D Key D outside diameter of tube l length of components t material thickness a Joint preparation and fit-up, as specified in the pWPS. Figure 2 — Test piece for a butt joint in tube with full penetration 6.2.1.4 Lap joint The test piece shall be prepared in accordance with Figure 3. The weld may be either partial or full penetration through all the sheets. Dimensions in millimetres l ≥ 500b2t2t11b3 ≥ 150b1b3 ≥ 150 Key 1 weld b1 edge to weld centreline distance of upper sheet, as specified in the pWPS b2 edge to weld centreline distance of lower sheet, as specified in the pWPS b3 distance between weld centre and edge of test piece l test piece length t1 parent material thickness of upper sheet t2 parent material thickness of lower sheet Figure 3 — Test piece for a lap joint SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved 7 6.2.2 Welding of test pieces The test pieces shall be welded in accordance with the pWPS. If tack welds are to be consumed during friction stir welding of the production joint, then they shall be included in the test piece. The location of tack welds shall be clearly marked on the test piece. Welding of the test pieces shall be witnessed by an examiner. 6.3 Examination and testing of test pieces 6.3.1 Extent of testing Testing includes both non-destructive testing (NDT) and destructive testing. Testing shall be performed in accordance with the requirements of Table 1 and Table 2. Annex B provides additional information on NDT. Testing of the test pieces shall be witnessed by an examiner. Table 1 — Examination and testing of the test pieces for butt joints (Figure 1, Figure 2) Type of examination and testing Extent of examination and testing Visual testinga 100 % Transverse tensile testb Two test specimens Transverse bend test for wrought materials (in accordance with ISO 5173)c Fracture test for cast materials or wrought/cast combinations (in accordance with ISO 9017) Two root test specimens
Two face test specimens Macroscopic examination One test specimen Additional tests (e.g. non-destructive)d If required a Testing shall be carried out to avoid discarded areas, as shown in Figure 4. b For a butt joint in tube, at least one transverse tensile test specimen should be taken from the WOA, if possible. c For material over 12 mm in thickness, four transverse side-bend test specimens may be substituted for the two root and two face-bend test specimens. One longitudinal face-bend test specimen and one longitudinal root-bend test specimen may be substituted for the four transverse-bend test specimens. d Additional tests shall be carried out in accordance with the relevant requirements of the design specification. Table 2 — Examination and testing of the test pieces for lap joints (Figure 3) Type of examination and testing Extent of examination and testing Visual testinga 100 % Macroscopic examination Two test specimens Additional tests (e.g. peel test, shear test, hammer S-bend test, non-destructive test)b If required a Testing shall be carried out to avoid discarded areas, as shown in Figure 6. b Additional tests shall be carried out in accordance with the relevant requirements of the design specification. Information on the hammer S-bend test is given in Annex C. SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) 8 © ISO 2011 – All rights reserved Examination and testing of test pieces including tack welds or start/end areas of a butt joint in tube shall be in accordance with the design specification. Specific service, material or manufacturing conditions may require more comprehensive testing in order to obtain additional test data. 6.3.2 Visual testing and acceptance levels The test pieces shall be visually tested in accordance with ISO 17637 prior to extracting the test specimens. The extent of testing shall be as specified in 6.3.1, Table 1 or Table 2. Apply the acceptance levels of ISO 25239-5:2011, Annex A. 6.3.3 Destructive tests 6.3.3.1 General The extent of testing shall be as required in Table 1 and Table 2. 6.3.3.2 Location and extraction of test specimens After the test piece has passed visual testing, test specimens shall be extracted. The test specimens shall be located in accordance with Figure 4, Figure 5 or Figure 6. It is acceptable to take, avoiding areas that have imperfections, the test specimens from locations within the acceptance limits of the visual testing method that was used to examine the test pieces. SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved 9 Dimensions in millimetres 4532a1l ≥ 50l ≥ 50 Key 1 area for: one tensile test specimen; bend test specimens or fracture test specimens 2 area for additional test specimens, if required 3 area for: one tensile test specimen; bend test specimens or fracture test specimens 4 area for one test specimen for macroscopic examination 5 weld l length discarded from each end of the test weld NOTE Not to scale. a Direction of welding. Figure 4 — Location of test specimens for a butt joint in sheet SIST EN ISO 25239-4:2012
ISO 25239-4:2011(E) 10 © ISO 2011 – All rights reserved 1a24356 Key 1 start of weld 2 end of weld 3 area for: one tensile test specimen; bend test specimens or fracture test specimens 4 area for additional test specimens, if required 5 area for: one tensile test specimen; bend test specimens or fracture test specimens 6 area for one test specimen for macroscopic examina
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