EN ISO 4506-2018 Hardmetals - Compression test.pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Hardmetals - Compression test (ISO 4506:2018)BS EN ISO 4506:2018National forewordThis British Standard is the UK implementation of EN ISO 4506:2018. It is identical to ISO 4506:2018. It supersedes BS EN 24506:1993, whic

2、h is withdrawn.The UK participation in its preparation was entrusted to Technical Committee ISE/65, Sintered metal components.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of

3、 a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 97110 5ICS 77.160; 77.040.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publishe

4、d under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 4506:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 4506April 2018ICS 77.040.10; 77.160 Supersedes EN 24506:1993E

5、UROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 4506:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersHa

6、rdmetals - Compression test (ISO 4506:2018)Mtaux durs - Essai de compression (ISO 4506:2018) Hartmetalle - Druckversuch (ISO 4506:2018)This European Standard was approved by CEN on 5 April 2018.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f

7、or giving this European Standard the status of a national standard without any alteration. Up-to-date 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 thre

8、e official versions (English, French, German). A version in any other language made by translation under 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 bodi

9、es of 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, Romania, Serbia, Slovakia, Slov

10、enia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 4506:2018 (E)European forewordThis document (EN ISO 4506:2018) has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy”.This European Standard shall be given the status of a national standard, either by

11、publication of an identical text or by endorsement, at the latest by October 2018, and conflicting national standards shall be withdrawn at the latest by October 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not b

12、e held responsible for identifying any or all such patent rights.This document supersedes EN 24506:1993.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, Croati

13、a, 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, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey

14、 and the United Kingdom.Endorsement noticeThe text of ISO 4506:2018 has been approved by CEN as EN ISO 4506:2018 without any modification.2BS EN ISO 4506:2018ISO 4506:2018Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Symbols and designations 16 Apparatus . 1

15、7 Test piece 28 Procedure. 28.1 Rate of stress increase 28.2 Determination of proof stress 28.3 Determination of ultimate compressive strength . 39 Expression of results 310 Test report . 3Bibliography 6 ISO 2018 All rights reserved iiiContents PageBS EN ISO 4506:2018ISO 4506:2018ForewordISO (the In

16、ternational Organization for Standardization) is a worldwide 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 h

17、as been established has the right to be represented 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

18、 standardization.The procedures used to develop this 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 ac

19、cordance 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 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. Deta

20、ils 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 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 en

21、dorsement.For an explanation on the voluntary nature 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 the followi

22、ng URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 4, Sampling and testing methods for hardmetals.This second edition cancels and replaces the first edition (ISO 4506:1979), which has been technically revised with th

23、e following main changes: Clause 2 and Clause 3 added; Clause 4: “hardmetal” changed to “cemented carbide or pcd (polycrystalline diamond) coated cemented carbide bearing blocks at room temperature”; Clause 5: Table 1 revised; Clause 6: “hardmetal” changed to “cemented carbide”, hardness changed to

24、“1 800 HV”; 8.2.2.2: NOTE changed to body text and “or using a laser extensometer” added to end of first sentence; Clause 9: “at least five determinations” changed to “at least eight determinations”; Clause 10, Figure 1: “pcd” added; Clause 10, Figure 2: diameter “16 0,3” changed to “12 0,3”.iv ISO

25、2018 All rights reservedBS EN ISO 4506:2018Hardmetals - Compression test (ISO 4506:2018)1 ScopeThis document specifies a method of determining the ultimate strength and proof stress of cemented carbide under uniaxial compressive loads.2 Normative referencesThere are no normative references in this d

26、ocument.3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at https:/www.iso.org/obp IEC Electropedia: available at http:/www.electrop

27、edia.org/4 PrincipleAxial loading of a test piece, placed between two cemented carbide or pcd (polycrystalline diamond) coated cemented carbide bearing blocks at room temperature, until the intended deformation occurs or until the test piece fractures.5 Symbols and designationsTable 1 shows symbols

28、and designations.Table 1 Symbols and designationsSymbol Designation UnitSoMinimum original cross-sectional area mm2Fc(With index) Load at proof stress, for example: Fc 0,2Load at 0,2 % proof stress NFcuUltimate load, i.e. load at instant of fracture NR Stress N/mm2cStrain %E Youngs modulus N/mm2Rc(W

29、ith index) Proof stress, for example: 0,20,2 % proof stress N/mm2UCS Ultimate compressive strength N/mm26 ApparatusThe test machine shall be designed and constructed so that loads can be applied at a uniform rate and so that, within the measuring range in question, the maximum loading error will be

30、1 %.INTERNATIONAL STANDARD ISO 4506:2018 ISO 2018 All rights reserved 1BS EN ISO 4506:2018ISO 4506:2018The test piece shall be affixed between two well-centred and rigidly secured cemented carbide anvils with a hardness not less than 1 800 HV. These contact surfaces shall be perpendicular to the loa

31、ding axis and parallel to each other within 0,5 m/mm. An example of a suitable anvil is given in Figure 1.7 Test piece7.1 The dimensions of the test piece shall conform to Figure 2. The end faces and the cylindrical surfaces of the enlarged ends shall be ground. Other surfaces should not be ground.

32、(Grinding or polishing may affect the result of the test.)1)7.2 The minimum diameter of the test piece shall be measured with an accuracy of 0,02 mm.8 Procedure8.1 Rate of stress increaseThe rate at which the load is applied shall be as uniform as possible, and any changes in this rate shall be made

33、 gradually and without shock. The rate shall not exceed 8 000 N/s, corresponding approximately to 100 N/(mm2 s).8.2 Determination of proof stress8.2.1 The proof stress, for example the 0,2 % proof stress, is determined according to Figure 3. This method is based on the fact, valid for almost all met

34、als, that if a load is removed after the elastic limit, D, has been exceeded, the load-compression curve will follow a linear path that is roughly parallel to the loading curve below the elastic limit.8.2.2 Determination of proof stress using the graphic intersection method is carried out as follows

35、.8.2.2.1 Apply a pre-load not greater than that required to keep the test piece positioned properly in the machine.8.2.2.2 Determine the stress-strain curve.Because of the shortness of the test zone and the hardness of the material, practical difficulties are involved in measuring changes in length

36、using displacement gauges of the clamp-on type (extensometers) or using a laser extensometer. It is recommended that changes in length be measured using a resistive strain gauge. Two or three gauges should be applied symmetrically at the centre of the test zone. The active length of the gauges shoul

37、d not exceed 8 mm. The results obtained represent an average of the change in length of the test zone.8.2.2.3 On the graph thus plotted (Figure 3), make OB equal to the specified residual strain (offset), and draw a line BA from B parallel to OC. Ordinate FCof intersection point Q has the value Fcqa

38、nd represents the load that corresponds to the proof stress.It is sometimes difficult to ascertain the direction of line OC from a graph; in such cases, this line can be drawn on the basis of an agreed value of the Youngs modulus.1) Cylindrical test pieces such as those specified in ASTM E 9 may be

39、used to obtain results with potentially less accuracy.2 ISO 2018 All rights reservedBS EN ISO 4506:2018ISO 4506:20188.2.3 The proof stress 0,2, in newtons per square millimetre, is given by Formula (1):02,=FScqo(1)8.3 Determination of ultimate compressive strength8.3.1 Load the test piece to fractur

40、e.8.3.2 The ultimate compressive strength (UCS), in newtons per square millimetre, is given by Formula (2):UCScuo=FS(2)9 Expression of resultsReport the arithmetical mean of at least eight determinations, rounded to the nearest 10 N/mm2.10 Test reportThe test report shall include the following infor

41、mation:a) reference to this document, i.e. ISO 4506;b) all details necessary for identification of the test piece;c) the result obtained;d) all operations not specified by this document, or regarded as optional;e) details of any occurrence which may have affected the result.Dimensions in millimetres

42、Key1 pcd (polycrystalline diamond)Figure 1 Suitable cemented carbide anvil ISO 2018 All rights reserved 3BS EN ISO 4506:2018ISO 4506:2018Dimensions in millimetresa b c d e f g h i j k l1,21 1,90 2,29 2,54 2,69 2,79 2,86 2,91 2,94 2,96 2,98 2,99m n o p q r s t u v w x y3,00 2,99 2,98 2,96 2,94 2,91 2

43、,86 2,79 2,69 2,54 2,29 1,90 1,21NOTE The 25 coordinates a to y are at 1 mm intervals.Figure 2 Test piece4 ISO 2018 All rights reservedBS EN ISO 4506:2018ISO 4506:2018Figure 3 Load-compression curve ISO 2018 All rights reserved 5BS EN ISO 4506:2018ISO 4506:2018Bibliography1 ASTM E 9, Standard Test M

44、ethods of Compression Testing of Metallic Materials at Room Temperature6 ISO 2018 All rights reservedBS EN ISO 4506:2018This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, inf

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