BS EN ISO 6892-1-2016 Metallic materials Tensile testing Method of test at room temperature《金属材料 抗拉试验 第1部分 室温下的试验方法》.pdf

1、BS EN ISO 6892-1:2016Metallic materials TensiletestingPart 1: Method of test at room temperature(ISO 6892-1:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 6892-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of E

2、N ISO6892-1:2016. It supersedes BS EN ISO 6892-1:2009 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/101/1, Uniaxial testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not p

3、urport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 80099 3ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligati

4、ons.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6892-1 July 2016 ICS 77.040.10 Supersedes EN ISO 6892-1:2009English

5、Version Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2016) Matriaux mtalliques - Essai de traction - Partie 1: Mthode dessai temprature ambiante (ISO 6892-1:2016) Metallische Werkstoffe - Zugversuch - Teil 1: Prfverfahren bei Raumtemperatur (ISO 6892-

6、1:2016)This European Standard was approved by CEN on 15 April 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 bibliographica

7、l 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 o

8、f 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 Republic of Ma

9、cedonia, 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 NORMALISATION EU

10、ROPISCHES 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 6892-1:2016 EBS EN ISO 6892-1:2016EN ISO 6892-1:2016 (E) 3 European Foreword Thi

11、s document (EN ISO 6892-1:2016) 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 shall be

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of an identical text or by endorsement, at the latest by January 2017, and conflicting national standards shall be withdrawn at the latest by January 2017.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

13、 may 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 6892-1:2009. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bo

14、und to 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, Portug

15、al, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6892-1:2016 has been approved by CEN as EN ISO 6892-1:2016 without any modification. BS EN ISO 6892-1:2016ISO 6892-1:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative r

16、eferences 13 Terms and definitions . 14 Symbols 65 Principle 76 Test pieces . 86.1 Shape and dimensions 86.1.1 General 86.1.2 Machined test pieces 86.1.3 Unmachined test pieces . 96.2 Types 96.3 Preparation of test pieces 97 Determination of original cross-sectional area . 98 Original gauge length a

17、nd extensometer gauge length .108.1 Choice of the original gauge length 108.2 Marking the original gauge length 108.3 Choice of the extensometer gauge length . 109 Accuracy of testing apparatus 1010 Conditions of testing 1110.1 Setting the force zero point . 1110.2 Method of gripping . 1110.3 Testin

18、g rates . 1110.3.1 General information regarding testing rates 1110.3.2 Testing rate based on strain rate (method A) 1110.3.3 Testing rate based on stress rate (method B) 1310.3.4 Report of the chosen testing conditions .1511 Determination of the upper yield strength 1512 Determination of the lower

19、yield strength .1513 Determination of proof strength, plastic extension1514 Determination of proof strength, total extension .1615 Method of verification of permanent set strength .1616 Determination of the percentage yield point extension 1617 Determination of the percentage plastic extension at ma

20、ximum force .1718 Determination of the percentage total extension at maximum force 1719 Determination of the percentage total extension at fracture .1720 Determination of percentage elongation after fracture .1821 Determination of percentage reduction of area .1822 Test report 1923 Measurement uncer

21、tainty .2023.1 General 2023.2 Test conditions . 2023.3 Test results. 20 ISO 2016 All rights reserved iiiContents PageBS EN ISO 6892-1:2016ISO 6892-1:2016(E)Annex A (informative) Recommendations concerning the use of computer-controlled tensile testing machines 34Annex B (normative) Types of test pie

22、ces to be used for thin products: sheets, strips, and flats between 0,1 mm and 3 mm thick 40Annex C (normative) Types of test pieces to be used for wire, bars, and sections with a diameter or thickness of less than 4 mm .43Annex D (normative) Types of test pieces to be used for sheets and flats of t

23、hickness equal to or greater than 3 mm and wire, bars, and sections of diameter or thickness equal to or greater than 4 mm .44Annex E (normative) Types of test pieces to be used for tubes .48Annex F (informative) Estimation of the crosshead separation rate in consideration of the stiffness (or compl

24、iance) of the testing equipment 50Annex G (normative) Determination of the modulus of elasticity of metallic materials using a uniaxial tensile test 52Annex H (informative) Measuring the percentage elongation after fracture if the specified value is less than 5 % 61Annex I (informative) Measurement

25、of percentage elongation after fracture based on subdivision of the original gauge length 62Annex J (informative) Determination of the percentage plastic elongation without necking, Awn, for long products such as bars, wire, and rods64Annex K (informative) Estimation of the uncertainty of measuremen

26、t .65Annex L (informative) Precision of tensile testing Results from interlaboratory programmes 69Bibliography .76iv ISO 2016 All rights reservedBS EN ISO 6892-1:2016ISO 6892-1:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bod

27、ies (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 organization

28、s, 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 document and those intended for its further

29、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 Directives, Part 2 (see www.iso.org/directives).

30、 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 development of the document will be in the Introd

31、uction 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 specific terms and expressions related to co

32、nformity assessment, as well as information about ISOs adherence 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 164, Mechanical testing of metals, Subcommittee SC 1, Uniax

33、ial testing.This second edition cancels and replaces the first edition (ISO 6892-1:2009), which has been technically revised with the following changes:a) renumbering of Clause 10;b) additional information about the use of Method A and B;c) new denomination for: 1) Method A closed loop A12) Method A

34、 open loop A2;e) addition of A.5;f) addition in Annex F for determination of the stiffness of the testing equipment;g) new normative Annex G: Determination of the modulus of elasticity of metallic materials using a uniaxial tensile test;h) the old Annex G is renamed to Annex H, Annex H to Annex I, e

35、tc.ISO 6892 consists of the following parts, under the general title Metallic materials Tensile testing: Part 1: Method of test at room temperature Part 2:Method of test at elevated temperature Part 3:Method of test at low temperature Part 4: Method of test in liquid helium ISO 2016 All rights reser

36、ved vBS EN ISO 6892-1:2016ISO 6892-1:2016(E)IntroductionDuring discussions concerning the speed of testing in the preparation of ISO 6892, it was decided to recommend the use of strain rate control in future revisions.In this part of ISO 6892, there are two methods of testing speeds available. The f

37、irst, method A, is based on strain rates (including crosshead separation rate) and the second, method B, is based on stress rates. Method A is intended to minimize the variation of the test rates during the moment when strain rate sensitive parameters are determined and to minimize the measurement u

38、ncertainty of the test results. Therefore, and out of the fact that often the strain rate sensitivity of the materials is not known, the use of method A is strongly recommended.vi ISO 2016 All rights reservedBS EN ISO 6892-1:2016Metallic materials Tensile testing Part 1: Method of test at room tempe

39、rature1 ScopeThis part of ISO 6892 specifies the method for tensile testing of metallic materials and defines the mechanical properties which can be determined at room temperature.NOTE Annex A contains further recommendations for computer controlled testing machines.2 Normative referencesThe followi

40、ng 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 undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7500-1, Metalli

41、c materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring systemISO 9513, Metallic materials Calibration of extensometer systems used in uniaxial testing3 Terms and definitionsFor the purposes of this

42、 document, the following terms and definitions apply.NOTE In what follows, the designations “force” and “stress” or “extension”, “percentage extension”, and “strain”, respectively, are used on various occasions (as figure axis labels or in explanations for the determination of different properties).

43、 However, for a general description or point on a curve, the designations “force” and “stress” or “extension”, “percentage extension”, and “strain”, respectively, can be interchanged.3.1gauge lengthLlength of the parallel portion of the test piece on which elongation is measured at any moment during

44、 the test3.1.1original gauge lengthLolength between gauge length (3.1) marks on the test piece measured at room temperature before the test3.1.2final gauge length after fractureLulength between gauge length (3.1) marks on the test piece measured after rupture, at room temperature, the two pieces hav

45、ing been carefully fitted back together so that their axes lie in a straight lineINTERNATIONAL STANDARD ISO 6892-1:2016(E) ISO 2016 All rights reserved 1BS EN ISO 6892-1:2016ISO 6892-1:2016(E)3.2parallel lengthLclength of the parallel reduced section of the test pieceNote 1 to entry: The concept of

46、parallel length is replaced by the concept of distance between grips for unmachined test pieces.3.3elongationincrease in the original gauge length (3.1.1) at any moment during the test3.4percentage elongationelongation expressed as a percentage of the original gauge length (3.1.1)3.4.1percentage per

47、manent elongationincrease in the original gauge length (3.1.1) of a test piece after removal of a specified stress, expressed as a percentage of the original gauge length3.4.2percentage elongation after fractureApermanent elongation of the gauge length after fracture, (Lu Lo), expressed as a percent

48、age of the original gauge length (3.1.1)Note 1 to entry: For further information, see 8.1.3.5extensometer gauge lengthLeinitial extensometer gauge length used for measurement of extension by means of an extensometerNote 1 to entry: For further information, see 8.3.3.6extensionincrease in the extenso

49、meter gauge length (3.5), at any moment during the test3.6.1percentage extension“strain”eextension expressed as a percentage of the extensometer gauge length (3.5)Note 1 to entry: e is commonly called engineering strain.3.6.2percentage permanent extensionincrease in the extensometer gauge length, after removal of a specified stress from the test piece, expressed as a percentage of the extensometer gauge length (3.5)3.6.3percentage yield point extensionAein discontinuous yielding materials, the extension between the start of yield