BS EN ISO 148-1-2016 Metallic materials Charpy pendulum impact test Test method《金属材料 夏比摆锤冲击试验 试验方法》.pdf

1、BS EN ISO 148-1:2016Metallic materials Charpy pendulum impact testPart 1: Test method(ISO 148-1:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 148-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 148-1:2

2、016. It supersedes BS EN ISO 148-1:2010 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/101/4, Toughness testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to in

3、clude all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 84297 9ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Br

4、itish Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2016.Amendments/Corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 148-1 November 2016 ICS 77.040.10 Supersedes EN ISO 148-1:2010En

5、glish Version Metallic materials - Charpy pendulum impact test - Part 1: Test method (ISO 148-1:2016) Matriaux mtalliques - Essai de flexion par choc sur prouvette Charpy - Partie 1: Mthode dessai (ISO 148-1:2016) Metallische Werkstoffe - Kerbschlagbiegeversuch nach Charpy - Teil 1: Prfverfahren (IS

6、O 148-1:2016) This European Standard was approved by CEN on 20 August 2016. 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 biblio

7、graphical 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 responsi

8、bility 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 Yugoslav Republ

9、ic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALIS

10、ATION 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 148-1:2016 EBS EN ISO 148-1:2016EN ISO 148-1:2016 (E) 3 European forewor

11、d This document (EN ISO 148-1:2016) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals” in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” the secretariat of which is held by AFNOR. This European Standard shal

12、l be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may

13、 be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 148-1:2010. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound t

14、o implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, R

15、omania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 148-1:2016 has been approved by CEN as EN ISO 148-1:2016 without any modification. BS EN ISO 148-1:2016ISO 148-1:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and

16、definitions . 13.1 Definitions pertaining to energy 13.2 Definitions pertaining to test piece . 24 Symbols and abbreviated terms . 25 Principles of the test . 36 Test pieces . 36.1 General . 36.2 Notch geometry 46.2.1 V-notch 46.2.2 U-notch . 46.3 Tolerance of the test pieces 46.4 Preparation of the

17、 test pieces. 46.5 Marking of the test pieces 47 Test equipment. 47.1 General . 47.2 Installation and verification 57.3 Striker . 58 Test procedure 58.1 General . 58.2 Friction measurement 58.3 Test temperature . 68.4 Specimen transfer 78.5 Exceeding machine capacity . 78.6 Incomplete fracture 78.7

18、Test piece jamming 88.8 Post-fracture inspection 89 Test report . 89.1 Mandatory information . 89.2 Optional information . 8Annex A (informative) Self-centring tongs 12Annex B (informative) Lateral expansion.13Annex C (informative) Fracture appearance .16Annex D (informative) Absorbed energy vs. tem

19、perature curve and the transition temperature .19Annex E (informative) Measurement uncertainty of an absorbed energy value, K 21Bibliography .29 ISO 2016 All rights reserved iiiContents PageBS EN ISO 148-1:2016ISO 148-1:2016(E)ForewordISO (the International Organization for Standardization) is a wor

20、ldwide 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

21、 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 d

22、ocument 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 Direc

23、tives, Part 2 (see www.iso.org/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 develop

24、ment of the document will be in the Introduction and/or on the ISO list of patent declarations received (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 spe

25、cific 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 the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/

26、TC 164, Mechanical testing of metals, Subcommittee SC 4, Toughness testing Fracture (F), Pendulum (P), Tear (T) .This third edition cancels and replaces the second edition (ISO 148-1:2009), which has been technically revised.ISO 148 consists of the following parts, under the general title Metallic m

27、aterials Charpy pendulum impact test: Part 1: Test method Part 2: Verification of testing machines Part 3: Preparation and characterization of Charpy V-notch test pieces for indirect verification of pendulum impact machinesiv ISO 2016 All rights reservedBS EN ISO 148-1:2016INTERNATIONAL STANDARD ISO

28、 148-1:2016(E)Metallic materials Charpy pendulum impact test Part 1: Test method1 ScopeThis part of ISO 148 specifies the Charpy (V-notch and U-notch) pendulum impact test method for determining the energy absorbed in an impact test of metallic materials. This part of ISO 148 does not cover instrume

29、nted impact testing, which is specified in ISO 14556.Annexes B and C are based on ASTM E23 and are used with the permission of ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, USA.2 Normative referencesThe following referenced documents, in whole or in part

30、, are normatively referenced in this document and 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 148-2, Metallic materials Charp

31、y pendulum impact test Part 2: Verification of testing machinesISO 286-1, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits3 Terms and definitionsFor the purposes of this document, the following terms and definiti

32、ons apply.3.1 Definitions pertaining to energy3.1.1initial potential energypotential energyKppotential energy of the pendulum hammer prior to its release for the impact test, as determined by direct verification3.1.2absorbed energyKenergy required to break a test piece with a pendulum impact testing

33、 machine, after correction for frictionNote 1 to entry: 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 the radius of the striker, for example KV2.3.1.3nominal initial potential energynominal energyKNenergy assigned by

34、 the manufacturer of the pendulum impact testing machine ISO 2016 All rights reserved 1BS EN ISO 148-1:2016ISO 148-1:2016(E)3.2 Definitions pertaining to test piece3.2.1widthWdistance between the notched face and the opposite faceNote 1 to entry: See Figure 1.Note 2 to entry: In previous versions of

35、 the ISO 148 series (prior to 2016), the distance between the notched face and the opposite face was specified as “height”. Changing this dimension to “width” makes this part of ISO 148 consistent with the terminology used in other ISO fracture standards.3.2.2thicknessBdimension perpendicular to the

36、 width and parallel to the notchNote 1 to entry: See Figure 1.Note 2 to entry: In previous versions of the ISO 148 series (prior to 2016), the dimension perpendicular to the width that is parallel to the notch was specified as “width”. Changing this dimension to “thickness” makes this part of ISO 14

37、8 consistent with the terminology used in other ISO fracture standards.3.2.3lengthLlargest dimension perpendicular to the notchNote 1 to entry: See Figure 1.4 Symbols and abbreviated termsThe symbols and designations applicable to this part of ISO 148 are indicated in Tables 1 and 2, and are illustr

38、ated in Figure 2.Table 1 Symbols and their unit and designationSymbol Unit DesignationB mm thickness of test piece angle of fall of the pendulum1J or angle of rise when the machine is operated in the normal manner without a test piece in position2J or angle of rise when the machine is operated in th

39、e normal manner without a test piece in position and without resetting the indication mechanismL mm length of test pieceLE mm lateral expansionK J absorbed energy (expressed as KV2, KV8, KU2, KU8, to identify specific notch geome-tries and the radius of the striking edge)K1J or indicated absorbed en

40、ergy when the machine is operated in the normal manner without a test piece in positionK2J or indicated absorbed energy when the machine is operated in the normal manner without a test piece in position and without resetting the indication mechanismKNJ or nominal initial potential energyKpJ initial

41、potential energy (potential energy)KV2J absorbed energy for a V-notch test piece using a 2 mm striker2 ISO 2016 All rights reservedBS EN ISO 148-1:2016ISO 148-1:2016(E)Symbol Unit DesignationKV8J absorbed energy for a V-notch test piece using a 8 mm strikerKU2J absorbed energy for a U-notch test pie

42、ce using a 2 mm strikerKU8J absorbed energy for a U-notch test piece using an 8 mm strikerM Nm moment equal to the product Fl2p J absorbed energy loss caused by pointer frictionp J absorbed energy loss caused by bearing friction and air resistancepJ correction of absorbed energy losses for an angle

43、of rise SFA % shear fracture appearanceTtC transition temperatureW mm width of test pieceTt27Ctransition temperature defined at a specific value of absorbed energy; for example, 27 JTt50 %USCtransition temperature defined at a particular percentage of the absorbed energy of the upper shelf; for exam

44、ple, 50 %Tt50 %SFACtransition temperature defined at a particular proportion of shear fracture; for example, 50 %Tt0,9Ctransition temperature defined at a particular amount of lateral expansion; for example, 0,9 mm5 Principles of the testThis test consists of breaking a notched test piece with a sin

45、gle blow from a swinging pendulum, under the conditions defined in Clauses 6, 7 and 8. The notch in the test piece has a specified geometry and is located in the middle between two supports, opposite to the location which is impacted in the test. The energy absorbed in the impact test, the lateral e

46、xpansion and the shear fracture appearance are normally determined.Because the impact values of many metallic materials vary with temperature, tests shall be carried out at a specified temperature. When this temperature is other than ambient, the test piece shall be heated or cooled to that temperat

47、ure, under controlled conditions.The Charpy pendulum impact test is often used in routine, high-throughput pass/fail acceptance tests in industrial settings. For these tests, it may not be important whether the test sample is completely broken, partially broken, or simply plastically deformed and dr

48、agged through the anvils. In research, design, or academic settings, the measured energy values are studied in more detail, in which case it can be highly relevant whether the sample is broken or not.It is important to note that not all Charpy pendulum impact test results can be directly compared. F

49、or example, the test can be performed with hammers having strikers with different radii, or with different test piece shapes. Tests performed with different strikers can give different results,7and test results obtained with differently shaped test pieces can as well. This is why not only the adherence to ISO 148 but also a clear and complete reporting of the type of instrument, the test piece and the details of the post-test test pieces are crucial for comparability of results.6 Test pieces6.1 GeneralThe standa