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1、INTERNATIONALSTANDARDISO5173Fourth edition2023-01Destructive tests on welds in metallic materials Bend testsEssais destructi des soudures sur materioux metalliques Essais de pliageReference number ISO 5173:2023(E)ISO 2023ISO 5173=2023(E)/ : COPYRIGHT PROTECTED DOCUMENT ISO 2023All rights reserved. U
2、nless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanicalt including photocopying, or posting on the internet or an intranet, without prior written permission.
3、 Permission can be requested from either ISO at the address below or ISO,s member body in the country of the requesterISO copyright officeCP 401 Ch. de Blandonnet 8CH-1214 Vernier, GenevaPhone： 41 22 749 01 11Email: copyrightiso.orgWebsite: WWWjSO.orgPublished in SwitzerlandPageContentsFOreWordiv2 N
4、ormative references.14 Symbols and abbreviated terms86 Preparation of test specimens86.4 Heat treatment and/or ageing96.6 SPeCimen SiZe96.6.1 Transverse root and face bend tests of a butt weld (TRBB and TFBB)96.6.2 Transverse side bend tests of a butt weld (TSBB) 96.6.3 Longitudinal bend tests of a
5、butt weld (LFBB and LRBB) 106.6.4 Face bend tests of cladding material without a butt weld (FBC) 106.6.5 Side bend tests Ofcladding material without a butt weld (SBC)106.6.6 Transverse face bend tests Ofcladding material with a butt weld (FBCB106.6.7 Side bend tests Ofcladding material with a butt w
6、eld (SBCB)116.6.8 Dimensions .116.6.9 Surface preparation.127 Conditions of testing127.1 Etching127.2 TeSting.- -, 137.2.1 General137.2.2 Testing with a former137.2.3 Testing with a roller.177.2.4 Bend testing with backing plate .187.3 Diameter of former and roller207.3.1 Steel, nickel and nickel al
7、loys . 207.3.2 Aluminium and its alloys.207.4 Distance between and radius of parallel rollers. 207.5 Bending elongation 一 一 - 218 TeSt results 219 Test report . 21 nnex A (informative) Example of a test report23Bibliography. . 24ForewordISO (the International Organization for Standardization) is a w
8、orldwide 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
9、on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this
10、 document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Di
11、rectives, Part 2 (see www.iso.rrg/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the deve
12、lopment of the document will be in the Introduction and/or on the ISO list of patent declarations received (see WWW.iso.org/pateats.Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation of the voluntary nature
13、 of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see WWWiso.orgisofrewordhtmLThis document was prepared by Technica
14、l Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of weldsf in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 121l Welding and allied processes, in accordance with the Agreement on technical cooperation betw
15、een ISO and CEN (Vienna Agreement).This fourth edition cancels and replaces the third edition (ISO 5173:2009) which has been technically revised. It also incorporates the Amendment ISO 5173:2009/Amd 1:2011.The main changes are as follows: scope has been updated to introduce guided transverse bend te
16、sts with a roller and longitudinal bend tests as alternative methods of testing for heterogeneous assemblies; in ClaUSe 4, the testing temperature has been removed; SUbdaUSe 7.2.2 has been modified accordingly; figures have been corrected; document has been aligned with the latest ISO/IEC Directives
17、, Part 2.Any feedback or questions on this document should be directed to the user national standards body. A complete listing of these bodies can be found at www.iso.Qrg/members.html. Official interpretations of ISO/TC 44 documents, where they exist, are available from this page: https:committee.is
18、o.og/site3/tc44/home/interpretation.html. ISO 2023 - All rights reservediiiINTERNATIONAL STANDARDISO 5173:2023(E)Destructive tests on welds in metallic materials Bend tests1 ScopeThis document specifies a method for making transverse root, face and side bend tests on test specimens taken from butt w
19、elds, butt welds with cladding (subdivided into welds in clad plates and clad welds) and cladding without butt welds, in order to reveal imperfections on or near the surface of the test specimen which is under tension during bend testing and/or assess ductility. It also gives the dimensions of the t
20、est specimen.In addition, this document specifies methods to be used instead of transverse bend tests with a former for welded joints when base materials, heat affected zones and/or weld metal have a significant difference in their physical and mechanical properties in relation to bending.This docum
21、ent applies to metallic materials in all forms of product with welded joints made by any welding process.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain t
22、erminology databases for use in standardization at the following addresses: ISO Online browsing platform: available at https:WWW.iso.org/obp IEC Electropedia: available at https:WWW.electropedia.org/3.1transverse face bend test specimen for a butt weld TFBBtransverse butt weld specimen where the fac
23、e is in tensionNote 1 to entry: See FigUre 1. ISO 2023 - All rights reservedISO 5173:2023(E)Dimensions in millimetresKeyb width ofthe test specimenLt total length of the test specimen r radius of the test specimen edges tthickness of the test piece& thickness of the test specimenFigure 1 Transverse
24、face bend test specimen for a butt weld (TFBB)3.2transverse root bend test specimen for a butt weld TRBBtransverse butt weld specimen where the root is in tensionNote 1 to entry: See Figure 2. ISO 2023 - All rights reservedISO 5173:2023(E)Dimensions in millimetresKeyb width of the test specimenLt to
25、tal length of the test specimen r radius of the test specimen edges tthickness of the test pieceG thickness of the test specimenFigure 2 Transverse root bend test specimen for a butt weld (TRBB)3.3transverse side bend test specimen for a butt weldTSBBspecimen where the surface in tension is a cross-
26、section of the weldNote 1 to entry: See FigUre 3.Keyb width of the test specimenLt total length of the test specimen r radius of the test specimen edges q thickness of the test specimenFigure 3 Transverse side bend test specimen for a butt weld (TSBB) ISO 2023 - All rights reservedISO 5173=2023(E)3.
27、4longitudinal face bend test specimen for a butt weldLFBBspecimen where the direction is parallel to the butt weld direction and where the face is in tensionNote 1 to entry: See FigUre 4Dimensions in millimetresKeyb width of the test specimenLS maximum width after machiningLt total length of the tes
28、t specimen rradius of the test specimen edgest thickness of the test piece G thickness of the test specimen % width of outside fusion lineFigure 4 Longitudinal face/root bend test specimen for a butt weld (LFBB and LRBB)3.5 longitudinal root bend test specimen for a butt weld LRBBspecimen where the
29、direction is parallel to the butt weld direction and where the root is in tensionNote 1 to entry: See FigUre 4.3.6face bend test specimen for cladding without a butt weld FBCspecimen for which the cladding is in tension, applicable to both transverse and longitudinal specimensNote 1 to entry: See Fi
30、gure 5.# ISO 2023 - All rights reservedISO 5173:2023(E)Dimensions in millimetresKeyb width of the test specimenLt total length ofthe test specimen r radius of the test specimen edges t thickness of the test piece G thickness of the test specimen J thickness of the claddingFigure 5 Face bend test spe
31、cimen for cladding without a butt weld (FBC)3.7side bend test specimen for cladding without a butt weldSBCspecimen for which the cross-section ofthe cladding overlay is in tension, applicable to both transverse and longitudinal specimensNote 1 to entry: See FigUre 6. ISO 2023 - All rights reservedDi
32、mensions in millimetresKeybwidth of the test specimenLt total length of the test specimen r radius of the test specimen edges t thickness of the test piece G thickness of the test specimen tw thickness of parent material under cladding tc thickness of the claddingFigure 6 Side bend test specimen for
33、 cladding without a butt weld (SBC)3.8face bend test specimen for cladding with a butt weldFBCBspecimen containing a butt weld where the cladding is in tensionNote 1 to entry: See FigUre 7.Dimensions in millimetresKey6 width of the test specimen4 total length of the test specimen r radius of the tes
34、t specimen edges tthickness of the test piecet thickness of the test specimen J thickness of the claddingFigure 7 Face bend test specimen for cladding with a butt weld (FBCB)3.9side bend test specimen for cladding with a butt weldSBCBspecimen containing a butt weld where the cross-section of the cla
35、dding is in tensionNote 1 to entry: See Figure 8.Keyb width ofthe test specimenLt total length of the test specimen r radius of the test specimen edges q thickness of the test specimen tw thickness of parent material under cladding CC thickness of the claddingFigure 8 Side bend test specimen for cla
36、dding with a butt weld (SBCB)4 Symbols and abbreviated termsTable 1 SymbolsSymbolDesignationUnitAminimum percentage elongation after fracture required by the parent material specification%bwidth of the test specimenmmwidth ofoutside fusion linemmddiameter of the former or the inner rollermmDoutside
37、diameter of the pipeammdistance between the rollersmmLblength of additional backing platemmEfinitial distance between contact of the roller and the centre line of the weldmmoriginal gauge lengthmm4maximum width of the weld after machiningmmtotal length of the test specimenmmrradius of the test speci
38、men edgesmmrPplunger radiusmm办die radiusmmRradius of the rollersmmtthickness of the test piecemmqthickness of the claddingmmtbthickness OfadditionaI backing platemm&thickness of the test specimenmm%thickness of parent material under claddingmmabending angleOa The term pipe”, alone or in combination,
39、 is used to mean pipe tube or whollow section (without rectangular cross section)*.5 PrincipleSubmitting a test specimen, taken transversely or longitudinally from a welded joint, to plastic deformation by bending it, without reversing the bending direction, in such a way that one of the surfaces or
40、 cross-sections of the welded joint is in tension.The temperature at which the tests are carried out shall be recorded (see Clause 9).The testing speed should be constant and recorded when known (see Clause 9).The test shall be made in accordance with one of the methods described in CIaUSe 7.6 Prepa
41、ration of test specimens6.1 GeneralSpecimens shall be prepared in such a manner that the preparation does not affect either the parent material or the weld metal.6.2 LocationFor transverse bend testing of butt welds, the test specimen shall be taken transversely from the welded joint of the manufact
42、ured product or from the welded test piece in such a way that after machining the weld axis will remain in the centre of the test specimen or at a suitable position for testing.For longitudinal bend testing of butt welds, the test specimen shall be taken longitudinally from the welded joint of the m
43、anufactured product or from the welded test piece.The location and orientation of bend test specimens of cladding material shall be specified by the application standard or by agreement between the contracting parties.6.3 MarkingEach test piece shall be marked to identify its exact location in the m
44、anufactured product or in the joint from which it has been removed.If required by the relevant application standard, the direction of working (e.g. rolling or extrusion) shall be marked.Each test specimen shall be marked to identify its exact location in the test piece from which it has been removed
45、.6.4 Heat treatment and/or ageingNo heat treatment shall be applied to the welded joint or to the test specimen unless it is specified or permitted by the relevant application standard dealing with the welded joint to be tested. Details of any heat treatment shall be recorded in the test report. If
46、natural ageing Ofaluminium alloys takes place, the time between welding and testing shall be recorded.6.5 ExtractionThe mechanical or thermal processes used to extract the test specimen shall not change the properties of the test specimen in any way. Any material that is affected by thermal cutting
47、or shearing shall be mechanically removed.6.6 Specimen size6.6.1 Transverse root and face bend tests of a butt weld (TRBB and TFBB)For transverse root and face bend tests, the test specimen thickness, ts, shall be equal to the thickness of the parent material adjacent to the welded joint up to a maximum thickness of 30 mm. If the test piece thickness, t, is greater than 10 mm, the test specimen thick