1、BRITISH STANDARDBS EN ISO 6507-1:2005Metallic materials Vickers hardness test Part 1: Test methodThe European Standard EN ISO 6507-1:2005 has the status of a British StandardICS 77.040.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g
2、55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 6507-1:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BSI 23 January 2006ISBN 0 580 47674 XNational forewordThis British Sta
3、ndard is the official English language version of EN ISO 6507-1:2005. It is identical with ISO 6507-1:2005. It supersedes BS EN ISO 6507-1:1998 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee ISE/NFE/4, Mechanical testing of metals, to Subcommittee ISE
4、/NFE/4/5, Indentation hardness testing, which has the responsibility to: The members of subcommittee ISE/NFE/4/5 are concerned that the procedure in subclause 7.4 is ambiguous.They believe that the operator should bring the indenter into the close proximity of the required area of the test sample wi
5、thout making contact with the surface. Then the testing machine should be operated to apply the test force.Users are advised to be aware of this concern when following this procedure.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-references
6、The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Stand
7、ards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the r
8、esponsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover
9、, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 19 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDAR
10、DNORME EUROPENNEEUROPISCHE NORMEN ISO 6507-1December 2005ICS 77.040.10 Supersedes EN ISO 6507-1:1997 English VersionMetallic materials - Vickers hardness test - Part 1: Test method(ISO 6507-1:2005)Matriaux mtalliques - Essai de duret Vickers - Partie 1:Mthode dessai (ISO 6507-1:2005)Metallische Werk
11、stoffe - Hrteprfung nach Vickers - Teil1: Prfverfahren (ISO 6507-1:2005)This European Standard was approved by CEN on 14 December 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national st
12、andard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other l
13、anguage made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,G
14、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement
15、 Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 6507-1:2005: EForeword This document (EN ISO 6507-1:2005) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing o
16、f metals“ in collaboration with 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 2006, a
17、nd conflicting national standards shall be withdrawn at the latest by June 2006. This document supersedes EN ISO 6507-1:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Bel
18、gium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 6507-
19、1:2005 has been approved by CEN as EN ISO 6507-1:2005 without any modifications. EN ISO 6507-1:2005Reference numberISO 6507-1:2005(E)INTERNATIONAL STANDARD ISO6507-1Third edition2005-12-15Metallic materials Vickers hardness test Part 1: Test method Matriaux mtalliques Essai de duret Vickers Partie 1
20、: Mthode dessai EN ISO 6507-1:2005ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Principle. 2 4 Symbols and abbreviated terms . 2 5 Testing machine 3 6 Test piece 3 7 Procedure 3 8 Uncertainty of the results 5 9 Test report . 5 Annex A (normative) Minimum thi
21、ckness of the test piece in relation to the test force and to the hardness 6 Annex B (normative) Tables of correction factors for use in tests made on curved surfaces 8 Annex C (informative) Procedure for periodic checking of the testing machine by the user 12 Annex D (informative) Uncertainty of th
22、e measured hardness values . 13 Bibliography . 19 EN ISO 6507-1:2005iv Foreword ISO (the International 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 techn
23、ical 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 ISO, also take part in the work. ISO collaborates closely
24、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 task of technical committees is to prepare International Standards. Draft In
25、ternational 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. Attention is drawn to the possibility that some of the elements of this document
26、may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 6507-1 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing. This third edition, together with ISO 6507-4, cancels an
27、d replaces the second edition (ISO 6507-1:1997) which has been technically revised. ISO 6507 consists of the following parts, under the general title Metallic materials Vickers hardness test: Part 1: Test method Part 2: Verification and calibration of testing machines Part 3: Calibration of referenc
28、e blocks Part 4: Tables of hardness values EN ISO 6507-1:2005vIntroduction The periodic checking of the testing machine described in informative Annex C is good metrological practice. It is intended to make the annex normative in the next revision of this part of ISO 6507 Standard. For automated mea
29、suring systems this standard should be applied accordingly. EN ISO 6507-1:2005blank1Metallic materials Vickers hardness test Part 1: Test method 1 Scope This part of ISO 6507 specifies the Vickers hardness test method, for the three different ranges of test force for metallic materials (see Table 1)
30、. Table 1 Ranges of test force Ranges of test force, F N Hardness symbol Designation F W 49,03 W HV 5 Vickers hardness test 1,961 u F 49,03 HV 0,2 to HV 5 Low-force Vickers hardness test 0,098 07 u F 1,961 HV 0,01 to HV 0,2 Vickers microhardness test The Vickers hardness test is specified in this pa
31、rt of ISO 6507 for lengths of indentation diagonals between 0,020 mm and 1,400 mm. NOTE 1 For indentation diagonals less than 0,020 mm, the increase of the uncertainty has to be considered. NOTE 2 In general, decreasing the test force increases the scatter of results of the measurements. This is par
32、ticularly true for low-force Vickers hardness tests and Vickers microhardness tests, where the principal limitation will arise in the measurement of the diagonals of the indentation. For Vickers microhardness, the accuracy of determination of the mean diagonal length is unlikely to be better than 0,
33、001 mm (see Bibliography 2-5). For specific materials and/or products, particular International Standards exist. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referen
34、ces, the latest edition of the referenced document (including any amendments) applies. ISO 6507-2:2005, Metallic materials Vickers hardness test Part 2: Verification and calibration of testing machines ISO 6507-4, Metallic materials Vickers hardness test Part 4: Tables of hardness values EN ISO 6507
35、-1:20052 3 Principle A diamond indenter, in the form of a right pyramid with a square base and with a specified angle between opposite faces at the vertex, is forced into the surface of a test piece followed by measurement of the diagonal length of the indentation left in the surface after removal o
36、f the test force, F (see Figure 1). Figure 1 Principle of the test The Vickers hardness is proportional to the quotient obtained by dividing the test force by the sloping area of the indentation, which is assumed to be a right pyramid with a square base, and having at the vertex the same angle as th
37、e indenter. 4 Symbols and abbreviated terms 4.1 See Table 2 and Figure 1. Table 2 Symbols and abbreviated terms Symbol/ Abbreviated term Designation Angle between the opposite faces at the vertex of the pyramidal indenter (136) F Test force, in newtons (N) d Arithmetic mean, in millimetres, of the t
38、wo diagonal lengths d1and d2(see Figure 1) HV 221362sin20,102 0,189 1Test forceVickers hardness ConstantSurface area of indentationFFdd= = NOTE Constant = 0,102 1/9,806 65, where 9,806 65 is the conversion factor from kgf to N. EN ISO 6507-1:200534.2 The following is an example of the designation of
39、 Vickers hardness HV. EXAMPLE 5 Testing machine 5.1 Testing machine, capable of applying a predetermined force or forces within the required range of test forces, in accordance with ISO 6507-2. 5.2 Indenter, a diamond in the shape of a right pyramid with a square base, as specified in ISO 6507-2. 5.
40、3 Measuring system, as specified in ISO 6507-2. NOTE A suggested procedure for periodic checks of the hardness testing machine by the users is given in Annex C. 6 Test piece 6.1 The test shall be carried out on a surface which is smooth and even, free from oxide scale, foreign matter and, in particu
41、lar, completely free from lubricants, unless otherwise specified in product standards. The finish of the surface shall permit accurate determination of the diagonal length of the indentation. 6.2 Preparation shall be carried out in such a way that any alteration of the surface hardness, due to exces
42、sive heating or cold-working, for example, is minimized. Due to the small depth of Vickers microhardness indentations, it is essential that special precautions are taken during preparation. It is recommended to use a polishing/electropolishing process which is suitable for the material parameters. 6
43、.3 The thickness of the test piece, or of the layer under test, shall be at least 1,5 times the diagonal length of the indentation (see Annex A). No deformation shall be visible at the back of the test piece after the test. 6.4 For tests on curved surfaces, the corrections given in Annex B, Tables B
44、.1 to B.6 shall be applied. 6.5 For test pieces of small cross-section or of irregular shape, it may be necessary to provide some form of additional support. 7 Procedure 7.1 In general, the test is carried out at ambient temperature within the limits of 10 C to 35 C. Tests carried out under controll
45、ed conditions shall be made at a temperature of (23 5) C. 7.2 The test forces given in Table 3 are recommended. NOTE Other values e.g. HV 2,5 (24,52 N) may be used. EN ISO 6507-1:20054 Table 3 Test forces Hardness test aLow-force hardness test Microhardness test Hardness symbol Nominal value of the
46、test force F N Hardness symbol Nominal value of the test force F N Hardness symbol Nominal value of the test force F N HV 5 49,03 HV 0,2 1,961 HV 0,01 0,098 07 HV 10 98,07 HV 0,3 2,942 HV 0,015 0,147 HV 20 196,1 HV 0,5 4,903 HV 0,02 0,196 1 HV 30 294,2 HV 1 9,807 HV 0,025 0,245 2 HV 50 490,3 HV 2 19
47、,61 HV 0,05 0,490 3 HV 100 980,7 HV 3 29,42 HV 0,1 0,980 7 aNominal test forces greater than 980,7 N may be applied. 7.3 The test piece shall be placed on a rigid support. The support surfaces shall be clean and free from foreign matter (scale, oil, dirt, etc.). It is important that the test piece l
48、ies firmly on the support so that displacement cannot occur during the test. 7.4 Bring the indenter into contact with the test surface and apply the test force in a direction perpendicular to the surface, without shock or vibration, until the applied force attains the specified value. The time from
49、the initial application of the force until the full test force is reached shall not be less than 2 s nor greater than 8 s. For low-force hardness and microhardness tests, the maximum time shall not exceed 10 s. For low-force hardness and microhardness tests, the approach speed of the indenter shall not exceed 0,2 mm/s. For micro-hardness tests, the indenter should contact the test piece at a velocity between 15 m/s and 70 m/s. The duration of the test force shall be 10 s to 15 s, except for
