1、October 2016 English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25.160.40!%na“2577562www.din.deDI
2、N EN ISO 9015-2Destructive tests on welds in metallic materials Hardness testing Part 2: Microhardness testing of welded joints (ISO 90152:2016);English version EN ISO 90152:2016,English translation of DIN EN ISO 9015-2:2016-10Zerstrende Prfung von Schweiverbindungen an metallischen Werkstoffen Hrte
3、prfung Teil 2: Mikrohrteprfung an Schweiverbindungen (ISO 90152:2016);Englische Fassung EN ISO 90152:2016,Englische bersetzung von DIN EN ISO 9015-2:2016-10Essais destructifs des soudures sur matriaux mtalliques Essais de duret Partie 2: Essai de microduret des assemblages souds (ISO 90152:2016);Ver
4、sion anglaise EN ISO 90152:2016,Traduction anglaise de DIN EN ISO 9015-2:2016-10SupersedesDIN EN ISO 90152:201105www.beuth.deDocument comprises 14 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.10.16 DIN EN ISO 9015-2:2016-10
5、2 A comma is used as the decimal marker. National foreword This document (ISO 9015-2:2016) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 5 “Testing and inspection of welds” (Secretariat: AFNOR, France) and has been adopted by Technical Committee C
6、EN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Schweien und verwandte Verfahren (DIN Standards Committee Welding and Allied Processes), Joint Working Committee NA 092-00-05 GA Gemeinschaftsarbeitsa
7、usschuss NAS/NMP: Zerstrende Prfung von Schweiverbindungen (DVS AG Q 4/Q 4.1). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 6507-1 DIN EN ISO 6507-1 ISO 9015-1 DIN EN ISO 9015-1 ISO 14271 DIN EN ISO 14271 Amendments This standard dif
8、fers from DIN EN ISO 9015-2:2011-05 as follows: a) hardness testing of resistance spot, projection and seam welds is no longer within the scope of this standard; b) Clause 8 Test report” has been added. Previous editions DIN EN 1043-2: 1996-11 DIN EN ISO 9015-2: 2011-05 National Annex NA (informativ
9、e) Bibliography DIN EN ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test methods DIN EN ISO 9015-1, Destructive tests on welds in metallic materials Hardness testing Part 1: Hardness test on arc welded joints DIN EN ISO 14271, Resistance welding Vickers hardness testing (low-force an
10、d microhardness) of resistance spot, projection and seam welds “EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9015-2 February 2016 ICS 25.160.40 Supersedes EN ISO 9015-2:2011English Version Destructive tests on welds in metallic materials - Hardness testing - Part 2: Microhardness testing
11、 of welded joints (ISO 9015-2:2016) Essais destructifs des soudures sur matriaux mtalliques - Essais de duret - Partie 2: Essai de microduret des assemblages souds(ISO 9015-2:2016) Zerstrende Prfung von Schweiverbindungen an metallischen Werkstoffen - Hrteprfung - Teil 2: Mikrohrteprfung an Schweive
12、rbindungen(ISO 9015-2:2016) This European Standard was approved by CEN on 24 December 2015. 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
13、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 un
14、der 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
15、 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 COMIT EU
16、ROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9015-2:2016 EEuropean foreword 31 Scope 52 Normative re
17、ferences . 53 Symbols and abbreviated terms 54 Principle . 65 Preparation of test specimens . 66 Test procedure . 66.1 Rows of indentations (R). 66.2 Individual indentations (E) . 77 Test results . 78 Test report 7Annex A (informative) Example of a test report for rows of hardness tests (R) on welde
18、d joints .10Annex B (informative) Example of a test report for individual hardness tests (E) on welded joints 11Bibliography 12Contents PageDIN EN ISO 9015-2:2016-10 EN ISO 9015-2:2016 (E)2Foreword 4European foreword This document (EN ISO 9015-2:2016) has been prepared by Technical Committee ISO/TC
19、44 “Welding and allied processes“ 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 August 201
20、6, and conflicting national standards shall be withdrawn at the latest by August 2016. 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.
21、 This document supersedes EN ISO 9015-2:2011. 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, Form
22、er 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 9015-2
23、:2016 has been approved by CEN as EN ISO 9015-2:2016 without any modification. DIN EN ISO 9015-2:2016-10 EN ISO 9015-2:2016 (E)3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internat
24、ional 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 I
25、SO, 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 document and those intended for its further maintenance are described in the ISO/IEC Directives, Pa
26、rt 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 Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the
27、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 development of the document will be in the Introduction and/or on the ISO list of patent declarations rec
28、eived (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs ad
29、herence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds.This second edition cancels and
30、 replaces the first edition (ISO 9015-2:2003), of which it constitutes a minor revision.ISO 9015 consists of the following parts, under the general title Destructive tests on welds in metallic materials Hardness testing: Part 1: Hardness test on arc welded joints Part 2: Microhardness testing of wel
31、ded jointsDIN EN ISO 9015-2:2016-10 EN ISO 9015-2:2016 (E)4 1 ScopeThis part of ISO 9015 specifies microhardness testing on transverse sections of welded joints of metallic materials with high hardness gradients. It covers Vickers hardness tests in accordance with ISO 6507-1, normally with test load
32、s of 0,98 N to less than 49 N (HV 0,1 to less than HV 5).NOTE Testing ensures that the highest and/or the lowest level of hardness of both parent materials (in the case of dissimilar materials both parent materials) and weld metal is determined.This part of ISO 9015 is not applicable to hardness tes
33、ting of welds with loads of 49,03 N and above, which is covered by ISO 9015-1.This part of ISO 9015 is not applicable to Vickers hardness testing of resistance spot, projection and seam welds, which is covered by ISO 14271.This part of ISO 9015 is not applicable to hardness testing of very narrow we
34、lds, e.g. those typically produced by laser and electron beam welding (see ISO 22826).2 Normative referencesThe following 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 u
35、ndated references, the latest edition of the referenced document (including any amendments) applies.ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method3 Symbols and abbreviated termsThe symbols and terms to be used are specified in Table 1 and represented in Figures 1, 2 and 3.T
36、able 1 Symbols and abbreviated termsSymbol Term UnitE Individual indentation H Distance of rows of indentations from the reference line (surface or fusion line)mmHAZ Heat affected zone HV Vickers hardness aL Distance between the centre point of the indentations in the heat-af-fected zonemmR Row of i
37、ndentations t Thickness of test specimen mmaUnits for Vickers hardness are given in ISO 6507-1.DIN EN ISO 9015-2:2016-10 EN ISO 9015-2:2016 (E)5 4 PrincipleMicrohardness testing shall be carried out in accordance with ISO 6507-1.The microhardness tests may be carried out in the form of rows of inden
38、tations, R, or as individual indentations, E.When the type of weld is not shown in the examples, the test procedure shall be appropriate to the welded joint.In general, the test is carried out at ambient temperature within the limits of 10 C to 35 C. Tests carried out under controlled conditions sha
39、ll be made at a temperature of (23 5) C.5 Preparation of test specimensThe preparation of the test specimen shall be in accordance with ISO 6507-1.A cross-section from the test piece shall be taken by mechanical cutting, usually transverse to the welded joint.This operation and the subsequent prepar
40、ation of the surface shall be carried out carefully so that the hardness of the surface to be tested is not affected metallurgically by heat or cold working.The surface to be tested shall be properly prepared and preferably etched, so that accurate measurements of the diagonal lengths of the indenta
41、tions can be taken in the different zones of the welded joint.6 Test procedure6.1 Rows of indentations (R)Figures 1 and 2 show typical examples for the location of hardness indentations made in rows, including the distance from the surface, so that the rows or parts thereof permit an assessment of t
42、he welded joint. If specified, e.g. by reference to an application standard, additional rows of indentations and/or different locations may be made. The actual location(s) shall be included in the test report.In metals such as aluminium or copper and their alloys, the rows on the root-side of butt w
43、elds (see Figure 1) are not always necessary and may be omitted.The number and spacing of indentations shall be sufficient to define hardened and/or softened regions due to welding. The recommended distance, L, between the centre point of the indentations in the heat-affected zone (HAZ) is given in
44、Table 2 and in ISO 6507-1. The larger dimension, in accordance with Table 2 or ISO 6507-1, should be used.A sufficient number of indentations shall be made to ensure that unaffected parent material is also tested. The distance between indentations in the weld metal shall be sufficient to enable a fu
45、ll assessment of the welded joint. For metals which, as a result of welding, harden in the HAZ, two additional indentations in the HAZ shall be made at a distance 0,5 mm between the centre point of the indentation and the fusion line (see Figure 2).For other joint configurations or metals (e.g. aust
46、enitic steels) additional indentations may be specified, e.g. by reference to an application standard.DIN EN ISO 9015-2:2016-10 EN ISO 9015-2:2016 (E)6 Table 2 Recommended distance, L, between the centre points of indentations in the heat-affected zone (HAZ) for rows of indentations (R)Vickers hardn
47、ess symbolRecommended distance between indentations, L mmaFerrous metalsbAluminium, copper and their alloysHV 0,1 0,2 0,6 to 2HV 1 0,5 1,5 to 4HV 5 0,7 2,5 to 5aThe distance between centre points shall not be less than the minimum value allowed in ISO 6507-1.bExcluding austenitic steels.6.2 Individu
48、al indentations (E)Figure 3 shows typical areas for the location of individual indentations: locations 14 give information about the unaffected parent material; locations 58 refer to the HAZ; locations 911 refer to the weld metal. Otherwise, the location of the indentation can be determined on the basis of metallographic examination.To prevent the influence of deformation caused by an indentation, the
