EN ISO 148-3-2008 346 Metallic materials - Charpy pendulum impact test - Part 3 Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum.pdf

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1、BS EN ISO148-3:2008ICS 77.040.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMetallic materials Charpy pendulumimpact testPart 3: Preparation andcharacterization of Charpy V-notchtest pieces for indirect verificationof pendulum impact machines (ISO148-3:2008)

2、Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2009 BSI 2009ISBN

3、 978 0 580 55466 7Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 148-3:2008National forewordThis British Standard is the UK implementation of EN ISO 148-3:2008.Together with BS EN ISO 148-2:2009, it supersedes BS EN 10045-2:1993which is withdrawn.The UK participation in its pre

4、paration was entrusted to TechnicalCommittee ISE/NFE/4/4, Toughness testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct a

5、pplication.Compliance with a British Standard cannot confer immunityfrom legal obligations.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPIS

6、CHE NORMEN ISO 148-3December 2008ICS 77.040.10 Supersedes EN 10045-2:1992 English VersionMetallic materials - Charpy pendulum impact test - Part 3:Preparation and characterization of Charpy V-notch test piecesfor indirect verification of pendulum impact machines (ISO 148-3:2008)Matriaux mtalliques -

7、 Essai de flexion par choc surprouvette Charpy - Partie 3: Prparation et caractrisationdes prouvettes Charpy entaille en V pour la vrificationindirecte des machines dessai mouton-pendule (ISO 148-3:2008)Metallische Werkstoffe - Kerbschlagbiegeversuch nachCharpy - Teil 3: Vorbereitung und Charakteris

8、ierung vonCharpy-V-Referenzproben fr die indirekte Prfung derPrfmaschinen (Pendelschlagwerke) (ISO 148-3:2008)This European Standard was approved by CEN on 19 November 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe

9、anStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, F

10、rench, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus,

11、 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 STANDARDIZATIONCOMIT EUR

12、OPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 148-3:2008: ECopyright European Committee for Standardization Provided b

13、y IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 148-3:2008EN ISO 148-3:2008 (E) 3 Foreword This document (EN ISO 148-3:2008) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals“ in collaboration wi

14、th Technical Committee ECISS/TC 1 “Steel - Mechanical testing“ the secretariat of which is held by AFNOR. 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 2009, and conflicting national standa

15、rds shall be withdrawn at the latest by June 2009. This document, together with EN ISO 148-2:2008, supersedes EN 10045-2:1992. 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 id

16、entifying 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, G

17、reece, 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 148-3:2008 has been approved by CEN as a EN ISO 148-3:2008 without

18、any modification. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 148-3:2008ISO 148-3:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv Introduction v 1

19、 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 3.1 Definitions pertaining to the machine 1 3.2 Definitions pertaining to energy 2 3.3 Definitions related to groups of test pieces. 2 3.4 Definitions pertaining to test pieces. 2 4 Symbols and abbreviated terms . 3 5 Reference testing

20、 machine 4 5.1 Characteristics 4 5.2 Verification of reference testing machine 6 5.3 Use of reference testing machine . 6 6 Reference test pieces. 7 6.1 General. 7 6.2 Material 7 6.3 Dimensions 7 6.4 Marking 8 6.5 Qualification of a batch of reference test pieces.8 6.6 Reference test piece sets. 8 7

21、 Certificates for reference test pieces 9 8 Notes for using sets of reference test pieces 9 Annex A (informative) Uncertainty of the certified KV value of Charpy reference materials . 12 Bibliography . 19 Copyright European Committee for Standardization Provided by IHS under license with CENNot for

22、ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 148-3:2008ISO 148-3:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pr

23、eparing 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, i

24、n 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 tas

25、k 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. Attentio

26、n 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 148-3 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 4, To

27、ughness testing Fracture (F), Pendulum (P), Tear (T). This second edition cancels and replaces the first edition (ISO 148-3:1998) which has been technically revised. ISO 148 consists of the following parts, under the general title Metallic materials Charpy pendulum impact test: Part 1: Test method P

28、art 2: Verification of testing machines Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking perm

29、itted without license from IHS-,-,-BS EN ISO 148-3:2008ISO 148-3:2008(E) ISO 2008 All rights reserved vIntroduction The suitability of a pendulum impact testing machine for acceptance testing of metallic materials has usually been based on a calibration of its scale and verification of compliance wi

30、th specified dimensions, such as the shape and spacing of the anvils supporting the specimen. The scale calibration is commonly verified by measuring the mass of the pendulum and its elevation at various scale readings. This procedure for evaluation of machines had the distinct advantage of requirin

31、g only measurements of quantities that could be traced to national standards. The objective nature of these traceable measurements minimized the necessity for arbitration regarding the suitability of the machines for material acceptance tests. However, sometimes two machines that had been evaluated

32、by the direct-verification procedures described above, and which met all dimensional requirements, were found to give significantly different impact values when testing test pieces of the same material. This difference was commercially important when values obtained using one machine met the materia

33、l specification, while the values obtained using the other machine did not. To avoid such disagreements, some purchasers of materials added the requirement that all pendulum impact testing machines used for acceptance testing of material sold to them must be indirectly verified by testing reference

34、test pieces supplied by them. A machine was considered acceptable only if the values obtained using the machine agreed, within specified limits, with the value furnished with the reference test pieces. Successful experience in the use of reference test pieces led to the requirement in ISO 148-2 that

35、 indirect verification must be performed using reference test pieces in addition to direct verification. National standards and codes also require indirect verification using reference test pieces; for example, EN 10045-2 and ASTM E 23 require the use of reference test pieces. The purpose of this pa

36、rt of ISO 148 is to specify the requirements, preparation and methods for qualifying test pieces used for the indirect verification of pendulum impact testing machines. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking

37、permitted without license from IHS-,-,-BS EN ISO 148-3:2008Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 148-3:2008INTERNATIONAL STANDARD ISO 148-3:2008(E) ISO 2008 A

38、ll rights reserved 1Metallic materials Charpy pendulum impact test Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machines 1 Scope This part of ISO 148 covers the requirements, preparation and methods for qualifying test pieces use

39、d for the indirect verification of pendulum impact testing machines in accordance with ISO 148-2. It specifies notched test pieces with nominal dimensions identical to those specified in ISO 148-1; however, the tolerances are more stringent. NOTE 1 The chemical composition or heat treatment or both

40、are varied according to the energy level desired. NOTE 2 Reference test pieces are qualified on reference pendulum impact testing machines which are also described in this part of ISO 148. 2 Normative references The following referenced documents are indispensable for the application of this documen

41、t. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 148-1, Metallic materials Charpy pendulum impact test Part 1: Test method ISO 148-2, Metallic materials Charpy pendulum impact test P

42、art 2: Verification of testing machines 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Definitions pertaining to the machine 3.1.1 industrial machine pendulum impact testing machine used for industrial, general or most research-laboratory te

43、sting of metallic materials NOTE These machines are not used to establish reference values. 3.1.2 reference machine pendulum impact testing machine used to determine certified values for batches of reference test pieces Copyright European Committee for Standardization Provided by IHS under license w

44、ith CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 148-3:2008ISO 148-3:2008(E) 2 ISO 2008 All rights reserved3.2 Definitions pertaining to energy 3.2.1 total absorbed energy KTtotal absorbed energy required to break a test piece with a pendulum impact

45、 testing machine, which is not corrected for any losses of energy NOTE It is equal to the difference in the potential energy from the starting position of the pendulum to the end of the first half swing during which the test piece is broken. 3.2.2 absorbed energy K energy required to break a test pi

46、ece with a pendulum impact testing machine, after correction for friction NOTE The letter V or U is used to indicate the notch geometry, that is KV or KU. The number 2 or 8 is used as a subscript to indicate striker radius, for example KV2. 3.2.3 reference absorbed energy KR certified value of absor

47、bed energy assigned to the test pieces used to verify the performance of pendulum impact testing machines 3.3 Definitions related to groups of test pieces 3.3.1 batch definite quantity of reference test pieces manufactured under identical conditions of production, with a common certified absorbed en

48、ergy 3.3.2 set group of test pieces chosen at random from a batch 3.3.2.1 characterization set set of test pieces taken from a batch in accordance with Clause 6 and used to determine the reference energy of the batch 3.3.2.2 reference set set of test pieces chosen in accordance with Clauses 6 and 8 and used to verify a pendulum impact testing machine 3.4 Definitions pertaining to test pieces 3.4.1 height distance between the notched face and the opposite face 3.4.2 width dimension perpendicular to the height that is parallel to the notch 3.4.3 length largest dimens