BS EN ISO 6508-1-2016 Metallic materials Rockwell hardness test Test method《金属材料 布氏硬度试验 试验方法》.pdf

1、BS EN ISO 6508-1:2016Metallic materials Rockwellhardness testPart 1: Test method (ISO 6508-1:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 6508-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO6508-1:201

2、6. It supersedes BS EN ISO 6508-1:2015 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/101/5, Indentation hardness testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purp

3、ort to include 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 92928 1ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations

4、.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6508-1 August 2016 ICS 77.040.10 Supersedes E

5、N ISO 6508-1:2015English Version Metallic materials - Rockwell hardness test - Part 1: Test method (ISO 6508-1:2016) Matriaux mtalliques - Essai de duret Rockwell - Partie 1: Mthode dessai (ISO 6508-1:2016) Metallische Werkstoffe - Hrteprfung nach Rockwell -Teil 1: Prfverfahren (ISO 6508-1:2016) Thi

6、s European Standard was approved by CEN on 23 July 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 bibliographical reference

7、s 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 of a CEN mem

8、ber 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 Macedonia, Fr

9、ance, 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 EUROPISCHES K

10、OMITEE 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 6508-1:2016 EBS EN ISO 6508-1:2016EN ISO 6508-1:2016 (E) 3 European foreword This document

11、(EN ISO 6508-1:2016) 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 given the

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of an identical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017.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

13、he 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 6508-1:2015. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to im

14、plement 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, Roman

15、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6508-1:2016 has been approved by CEN as EN ISO 6508-1:2016 without any modification. BS EN ISO 6508-1:2016ISO 6508-1:2016(E)Foreword .iv1 Scope . 12 Normative references 13 Principle

16、 14 Symbols, abbreviated terms and designations . 25 Testing machine 46 Test piece 57 Procedure. 58 Uncertainty of the results 79 Test report . 710 Conversions to other hardness scales or tensile strength values 8Annex A (normative) Special HR30TSm and HR15TSm test for thin products 9Annex B (normat

17、ive) Minimum thickness of the test piece in relation to the Rockwell hardness .10Annex C (normative) Corrections to be added to Rockwell hardness values obtained on convex cylindrical surfaces .13Annex D (normative) Corrections to be added to Rockwell hardness C scale values obtained on spherical te

18、st surfaces of various diameters .16Annex E (normative) Daily verification procedure 17Annex F (normative) Inspection of diamond indenters 20Annex G (informative) Uncertainty of the measured hardness values 21Annex H (informative) CCM Working group on hardness .28Annex I (informative) Rockwell hardn

19、ess measurement traceability29Bibliography .32 ISO 2016 All rights reserved iiiContents PageBS EN ISO 6508-1:2016ISO 6508-1:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern

20、ational 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 organizations, governmental and non-governmental, in liaison with

21、 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 maintenance are described in the ISO/IEC Directives,

22、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).Attention is drawn to the possibility that some of th

23、e 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 Introduction and/or on the ISO list of patent declarations r

24、eceived (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 conformity assessment, as well as information about ISOs

25、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/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing.This fourth edition c

26、ancels and replaces the third edition (ISO 6508-1:2015), of which it constitutes a minor revision in order to clarify the scope of this part of ISO 6508.ISO 6508 consists of the following parts, under the general title Metallic materials Rockwell hardness test: Part 1: Test method Part 2: Verificati

27、on and calibration of testing machines and indenters Part 3: Calibration of reference blocksiv ISO 2016 All rights reservedBS EN ISO 6508-1:2016INTERNATIONAL STANDARD ISO 6508-1:2016(E)Metallic materials Rockwell hardness test Part 1: Test method1 ScopeThis part of ISO 6508 specifies the method for

28、Rockwell regular and Rockwell superficial hardness tests for scales A, B, C, D, E, F, G, H, K, 15N, 30N, 45N, 15T, 30T, and 45T for metallic materials and is applicable to stationary and portable hardness testing machines.For specific materials and/or products, other specific International Standards

29、 apply (for instance, ISO 3738-1 and ISO 4498).NOTE Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball. Steel indenter balls are allowed to continue to be used only when complying with Annex A.2

30、 Normative referencesThe following 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 amendme

31、nts) applies.ISO 6508-2:2015, Metallic materials Rockwell hardness test Part 2: Verification and calibration of testing machines and indentersISO 6508-3:2015, Metallic materials Rockwell hardness test Part 3: Calibration of reference blocks3 PrincipleAn indenter of specified size, shape, and materia

32、l is forced into the surface of a test specimen under two force levels using the specific conditions defined in Clause 7. The specified preliminary force is applied and the initial indentation depth is measured, followed by the application and removal of a specified additional force, returning to th

33、e preliminary force. The final indentation depth is then measured and the Rockwell hardness value is derived from the difference, h, in the final and initial indentation depths and the two constants N and S (see Figure 1, Table 1, and Table 2) as shown in Formula (1):Rockwell hardness=NhS(1) ISO 201

34、6 All rights reserved 1BS EN ISO 6508-1:2016ISO 6508-1:2016(E)4 Symbols, abbreviated terms and designations4.1 See Table 1, Table 2, Table 3, and Figure 1.Table 1 Rockwell Regular scalesRockwellRegular hardness scaleHardness symbolUnitType of indenter Preliminary forceF0Total forceFScaling ConstantS

35、Full RangeConstantNApplicable range of application (Rockwell Regular hardness scales)A HRA Diamond cone 98,07 N 588,4 N 0,002 mm 100 20 HRA to 95 HRAB HRBW Ball 1,587 5 mm 98,07 N 980,7 N 0,002 mm 130 10 HRBW to 100 HRBWC HRC Diamond cone 98,07 N 1,471 kN 0,002 mm 100 20 HRCato 70 HRCD HRD Diamond c

36、one 98,07 N 980,7 N 0,002 mm 100 40 HRD to 77 HRDE HREW Ball 3,175 mm 98,07 N 980,7 N 0,002 mm 130 70 HREW to 100 HREWF HRFW Ball 1,587 5 mm 98,07 N 588,4 N 0,002 mm 130 60 HRFW to 100 HRFWG HRGW Ball 1,587 5 mm 98,07 N 1,471 kN 0,002 mm 130 30 HRGW to 94 HRGWH HRHW Ball 3,175 mm 98,07 N 588,4 N 0,0

37、02 mm 130 80 HRHW to 100 HRHWK HRKW Ball 3,175 mm 98,07 N 1,471 kN 0,002 mm 130 40 HRKW to 100 HRKWaThe applicable range of application can be extended to 10 HRC if the surfaces of the diamond cone and spherical tip are polished for a penetration depth of at least 0,4 mm.Table 2 Rockwell Superficial

38、 scalesRockwell Superficial hardness scaleHardness symbolUnitType of indenterPreliminary forceF0Total forceFScaling ConstantSFull Range ConstantNApplicable range of application (Rockwell Superficial hardness scales)15N HR15N Diamond cone 29,42 N 147,1 N 0,001 mm 100 70 HR15N to 94 HR15N30N HR30N Dia

39、mond cone 29,42 N 294,2 N 0,001 mm 100 42 HR30N to 86 HR30N45N HR45N Diamond cone 29,42 N 441,3 N 0,001 mm 100 20 HR45N to 77 HR45N15T HR15TW Ball 1,587 5 mm 29,42 N 147,1 N 0,001 mm 100 67 HR15TW to 93 HR15TW30T HR30TW Ball 1,587 5 mm 29,42 N 294,2 N 0,001 mm 100 29 HR30TW to 82 HR30TW45T HR45TW Ba

40、ll 1,587 5 mm 29,42 N 441,3 N 0,001 mm 100 10 HR45TW to 72 HR45TW2 ISO 2016 All rights reservedBS EN ISO 6508-1:2016ISO 6508-1:2016(E)Scales using indenter balls with diameter 6,350 mm and 12,70 mm may also be used, if specified in the product specification or by special agreement. See ASTM E18 11fo

41、r additional scales using these ball sizes.NOTE 1 For certain materials, the applicable range of application might be narrower than those indicated.NOTE 2 The numbers representing the test forces were originally based on units of kgf. For example, the total test force of 30 kgf has been converted to

42、 294,2 N.Table 3 Symbols and abbreviated termsSymbol/ Abbreviated termDefinition UnitF0Preliminary test force NF1Additional test force (total force minus preliminary force) NF Total test force NS Scaling constant, specific to the scale mm-mmN Full range constant, specific to the scaleh Permanent dep

43、th of indentation under preliminary test force after removal of additional test force (permanent indentation depth)HRAHRCHRDRockwell Regular hardness =1000 002h,HRBWHREWHRFWHRGWHRHWHRKWRockwell Regular hardness =1300 002h,HRNHRTWRockwell Superficial hardness =1000 001h,4.2 The following is an exampl

44、e of the designation of Rockwell hardness.EXAMPLE 70 HR 30 T W indication of type of ball used, W = Tungsten carbide compositeRockwell scale symbol (see Tables 1 or 2) Rockwell hardness value Rockwell hardness symbol NOTE 1 Previous versions of this part of ISO 6508 allowed the use of steel indenter

45、 balls, which required the suffix S.NOTE 2 For the HR30TSm and HR15TSm scales defined in Annex A, a capital S and a lower-case m is used indicating the use of steel indenter balls and a diamond spot specimen holder. ISO 2016 All rights reserved 3BS EN ISO 6508-1:2016ISO 6508-1:2016(E)KeyX time 4 per

46、manent indentation depth, hY indenter position 5 surface of specimen1 indentation depth by preliminary force, F06 reference plane for measurement2 indentation depth by additional test force, F17 position of indenter3 elastic recovery just after removal of additional test force, F18 indentation depth

47、 vs. time curveFigure 1 Rockwell principle diagram5 Testing machine5.1 Testing machine, shall be capable of applying the test forces for some or all of the Rockwell hardness scales as shown in Table 1 and Table 2, performing the procedure defined in Clause 7, and complying with all of the requiremen

48、ts defined in ISO 6508-2.5.2 Spheroconical diamond indenter, shall be in accordance with ISO 6508-2, with an included angle of 120 and radius of curvature at the tip of 0,2 mm. Diamond indenters shall be certified for use for either only the regular Rockwell diamond scales, only the superficial Rock

49、well diamond scales, or both the regular and the superficial Rockwell diamond scales.5.3 Ball indenter, shall be tungsten carbide composite in accordance with ISO 6508-2, with a diameter of 1,587 5 mm or 3,175 mm (see NOTE 1 and NOTE 2).NOTE 1 Ball indenters normally consist of a spherical ball and a separate appropriately designed holder. Single-piece spherically tipped indenters are allowed, provided that the surface of the indenter that makes contact with the test piece meets the size, shape, finish, and hardness r