BS EN ISO 6506-1-2014 Metallic materials Brinell hardness test Test method《金属材料 布氏硬度试验 试验方法》.pdf

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1、BSI Standards PublicationBS EN ISO 6506-1:2014Metallic materials Brinellhardness testPart 1: Test methodBS EN ISO 6506-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 6506-1:2014. It supersedes BS EN ISO 6506-1:2005 which is withdrawn.The UK participa

2、tion in its preparation was entrusted to Technical Committee ISE/101/5, Indentation hardness testing.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 a contract. Users are re

3、sponsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 79049 2 ICS 77.040.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the St

4、andards Policy and Strategy Committee on 30 September 2014.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6506-1 September 2014 ICS 77.040.10 Supersedes EN ISO 6506-1:2005English Version Metallic materials - Brinell

5、hardness test - Part 1: Test method (ISO 6506-1:2014) Matriaux mtalliques - Essai de duret Brinell - Partie 1: Mthode dessai (ISO 6506-1:2014) Metallische Werkstoffe - Hrteprfung nach Brinell - Teil 1: Prfverfahren (ISO 6506-1:2014) This European Standard was approved by CEN on 30 August 2014. CEN m

6、embers 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 bibliographical references concerning such national standards may be obtained on applic

7、ation 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 of a CEN member into its own language and notified to the CEN-CENELEC Mana

8、gement 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 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi

9、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marni

10、x 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6506-1:2014 EBS EN ISO 6506-1:2014EN ISO 6506-1:2014 (E) 3 Foreword This document (EN ISO 6506-1:2014) has been prepared by Technical Committee ISO/TC 1

11、64 “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 given the status of a national standard, either by publication of an identical t

12、ext or by endorsement, at the latest by March 2015, and conflicting national standards shall be withdrawn at the latest by March 2015. 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 responsibl

13、e for identifying any or all such patent rights. This document supersedes EN ISO 6506-1:2005. 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, Croatia, Cyprus,

14、 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Ki

15、ngdom. Endorsement notice The text of ISO 6506-1:2014 has been approved by CEN as EN ISO 6506-1:2014 without any modification. BS EN ISO 6506-1:2014ISO 6506-1:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Principle 14 Symbols and abbreviated ter

16、ms . 15 Apparatus . 36 Test piece 37 Procedure. 48 Uncertainty of the results 69 Test report . 6Annex A (normative) Procedure for periodic checking of the testing machine by the user 8Annex B (normative) Minimum thickness of the test piece in relation to the mean diameter of indentation 9Annex C (in

17、formative) Uncertainty of the measured hardness values.11Bibliography .16BS EN ISO 6506-1:2014ISO 6506-1:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards i

18、s 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, in liaison with ISO, also take par

19、t 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 maintenance are described in the ISO/IEC Directives, Part 1. In particul

20、ar 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). Attention is drawn to the possibility that some of the elements of this

21、 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 Introduction and/or on the ISO list of patent declarations received (see www.i

22、so.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 conformity assessment, as well as information about ISOs adherence to the

23、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 3, Hardness testing.This third edition cancels and replaces the second edition (

24、ISO 6506-1:2005), which has been technically revised.ISO 6506 consists of the following parts, under the general title Metallic materials Brinell hardness test: Part 1: Test method Part 2: Verification and calibration of testing machines Part 3: Calibration of reference blocks Part 4: Table of hardn

25、ess valuesiv ISO 2014 All rights reservedBS EN ISO 6506-1:2014INTERNATIONAL STANDARD ISO 6506-1:2014(E)Metallic materials Brinell hardness test Part 1: Test method1 ScopeThis part of ISO 6506 specifies the method for the Brinell hardness test for metallic materials. It is applicable to both fixed lo

26、cation and portable hardness testing machines.For some specific materials and/or products, particular International Standards exist (e.g. ISO 4498) and make reference to this International Standard.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this

27、 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 4498, Sintered metal materials, excluding hardmetals Determination of apparent hardn

28、ess and microhardnessISO 6506-2:2014, Metallic materials Brinell hardness test Part 2: Verification and calibration of testing machinesISO 6506-3:2014, Metallic materials Brinell hardness test Part 3: Calibration of reference blocksISO 6506-4, Metallic materials Brinell hardness test Part 4: Table o

29、f hardness values3 PrincipleAn indenter (tungsten carbide composite ball with diameter, D) is forced into the surface of a test piece and, after removal of the force, F, the diameter of the indentation, d, left in the surface is measured.The Brinell hardness is proportional to the quotient obtained

30、by dividing the test force by the curved surface area of the indentation. The indentation is assumed to take the shape of the unloaded ball indenter, and its surface area is calculated from the mean indentation diameter and the ball diameter, using the formula given in Table 1.4 Symbols and abbrevia

31、ted terms4.1 See Figure 1 and Table 1. ISO 2014 All rights reserved 1BS EN ISO 6506-1:2014ISO 6506-1:2014(E)Table 1 Symbols and abbreviated termsSymbol/ abbreviated termDefinition UnitD Diameter of the ball mmF Test force Nd Mean diameter of the indentationddd=+122mmd1, d2Indentation diameters measu

32、red at approximately 90 mmh Depth of indentationhDdD=21122mmHBW Brinell hardness=constant (see Note)Test forceidealized surface area of inndentationHBW0,1022112=FDdDpi220,102 F/D2Force-diameter indexNOTE constant =0 10219 80665, where 9,806 65 is the conversion factor from kgf to N.4.2 The following

33、 is an example of the designation of Brinell hardness, HBW.EXAMPLE600HBW 1/30 / 20duration time of test force (20s), if not within the specified range (10s to 15 s)approximate kgf equivalent of applied test force, where 30 kgf = 294,2Nball diameter in mmhardness symbolBrinell hardness valueNOTE In f

34、ormer editions of this International Standard, when use of a steel ball was permitted, the Brinell hardness was denoted by HB or HBS.2 ISO 2014 All rights reservedBS EN ISO 6506-1:2014ISO 6506-1:2014(E)Figure 1 Principle of testFor symbols, see Table 1.5 Apparatus5.1 Testing machine, capable of appl

35、ying a predetermined test force or test forces within the range of 9,807 N to 29,42 kN, in accordance with ISO 6506-2.5.2 Indenter, a polished tungsten carbide composite ball, as specified in ISO 6506-2.5.3 Indentation diameter measuring system, as specified in ISO 6506-2.6 Test piece6.1 The test sh

36、all be carried out on a surface which is smooth and even; free from oxide scale, foreign matter, and, in particular, free from lubricants. The test piece shall have a surface finish that will allow an accurate measurement of the diameter of the indentation.NOTE For indentations made with the smaller

37、 ball indenters, it might be necessary to polish or lap the surface prior to making the indentation.6.2 Preparation shall be carried out in such a way that any alteration of the surface, for example, due to excessive heating or cold-working, is minimized.6.3 The thickness of the test piece shall be

38、at least eight times the depth of indentation. Values for the minimum thickness of the test piece in relation to the mean diameter of indentation are given in Annex B.Visible deformation at the back of the test piece can indicate that the test piece is too thin. ISO 2014 All rights reserved 3BS EN I

39、SO 6506-1:2014ISO 6506-1:2014(E)7 Procedure7.1 In general, the test should be carried out at ambient temperature within the limits of 10 C to 35 C. However, because temperature variation can affect the results, users of the Brinell test can choose to control the temperature within a tighter range, s

40、uch as 23 C 5 C.7.2 Before performing any tests, confirm that verification has been performed in accordance with Annex A.7.3 The test forces given in Table 2 shall be used. Other test forces and force-diameter indices can be used by special agreement.Table 2 Test forces for the different testing con

41、ditionsHardness symbolBall diameter D mmForce-diameter index 0,102 F/D2Test force value F NHBW 10/3 000 10 30 29 420HBW 10/1 500 10 15 14 710HBW 10/1 000 10 10 9 807HBW 10/500 10 5 4 903HBW 10/250 10 2,5 2 452HBW 10/100 10 1 980,7HBW 5/750 5 30 7 355HBW 5/250 5 10 2 452HBW 5/125 5 5 1 226HBW 5/62,5

42、5 2,5 612,9HBW 5/25 5 1 245,2HBW 2,5/187,5 2,5 30 1 839HBW 2,5/62,5 2,5 10 612,9HBW 2,5/31,25 2,5 5 306,5HBW 2,5/15,625 2,5 2,5 153,2HBW 2,5/6,25 2,5 1 61,29HBW 1/30 1 30 294,2HBW 1/10 1 10 98,07HBW 1/5 1 5 49,03HBW 1/2,5 1 2,5 24,52HBW 1/1 1 1 9,8077.4 The test force should be chosen so that the di

43、ameter of the indentation, d, lies between the values 0,24 D and 0,6 D. If the diameter of the indentation lies outside these limits, the ratio of indentation diameter to indenter diameter (d/D) shall be stated in the test report. Table 3 indicates recommended force-diameter indices (0,102 F/D2) tha

44、t are appropriate for use when testing certain materials and hardness levels. In order to test the largest representative area of the test piece, the diameter of the indenter ball should be chosen to be as large as possible.4 ISO 2014 All rights reservedBS EN ISO 6506-1:2014ISO 6506-1:2014(E)Table 3

45、 Recommended force-diameter indices for different metallic materialsMaterialBrinell hardness HBWForce-diameter index0,102 F/D2Steel, nickel alloys, titanium alloys 30Cast irona200 30Light metals and their alloys80 1015Lead, tin 1Sintered metal According to ISO 4498aFor the testing of cast iron, the

46、nominal diameter of the ball shall be 2,5 mm, 5 mm, or 10 mm.7.5 The test piece shall be placed on a rigid support. The contact surfaces shall be clean and free from foreign matter (scale, oil, dirt, etc.). It is important that the test piece lies firmly on the support so that displacement cannot oc

47、cur during the test.7.6 Bring the indenter into contact with the test surface and apply the test force in a direction perpendicular to the surface; without shock, vibration, or overrun, until the applied force attains the specified value. The time from the initial application of force to the time th

48、e full test force is reached shall be 751+s. Maintain the test force for 1441+s. For certain materials, where a longer duration of the test force is required, this time shall be applied with a tolerance of 2 s.NOTE The requirements for the time durations are given with asymmetric limits. For example

49、, 751+s indicates that 7 s is the nominal time duration, with an acceptable range of not less than 2 s (7 s 5 s) to not more than 8 s (7 s + 1 s).7.7 Throughout the test, the testing machine shall be protected from significant shock or vibration, which can influence the test result.7.8 The distance from the edge of the test piece to the centre of each indentation shall be a minimum of two and a half times the mean indentation diameter. The distance between the centres of two