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1、BRITISH STANDARD BS EN ISO 6508-1:1999 Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) The European Standard EN ISO 6508-1:1999 has the status of a British Standard ICS 77.040.10 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GM
2、T+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6508-1:1999 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 03-2000 ISBN 0 580 35048 7 Na
3、tional foreword This British Standard is the English language version of EN ISO 6508-1:1999. It is identical with ISO 6508-1:1999. It supersedes BS EN 10109-1:1996 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee ISE/NFE/4, Mechanical testing of metals
4、, to Subcommittee ISE/NFE/4/5, Indentation hardness testing, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor re
5、lated international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists norm
6、ative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or
7、by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer im
8、munity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) a
9、nd may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6508-1:1999
10、BSI 03-2000i Contents Page National forewordInside front cover Foreword2 Forewordiii Text of EN ISO 6508-11 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 20
11、06, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6508-1 September 1999 ICS 77.040.10 English version Metallic materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:1999) Matriaux mtalliques Essai de duret Rock
12、well Partie 1: Mthode dessai (chelles A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:1999) Metallische Werkstoffe Hrteprfung nach Rockwell (Skalen A, B, C, D, E, F, G, H, K, N, T) Teil 1: Prfverfahren (ISO 6508-1:1999) This European Standard was approved by CEN on 8 July 1999. CEN members are bound to
13、 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 application to the Centra
14、l Secretariat 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 Central Secretariat has the same status as th
15、e official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardiza
16、tion Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6508-1:1999 E Licensed Copy: sheffieldun sheffieldu
17、n, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6508-1:1999 BSI 03-2000 2 Foreword The text of the International Standard ISO 6508-1:1999 has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals” in collaboration with Technical Committee ECISS/TC
18、 1 “Steel testing”, the secretariat of which is held by AFNOR. This European Standard supersedes EN 10109-1:1994. 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 March 2000, and conflicting nation
19、al standards shall be withdrawn at the latest by March 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
20、Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. NOTE FROM CEN/CS: The foreword is susceptible to be amended on reception of the German language version. The confirmed or amended foreword, and when appropriate, the normative Annex
21、 ZA for the references to international publications with their relevant European publications will be circulated with the German version. Endorsement notice The text of the International Standard ISO 6508-1:1999 was approved by CEN as a European Standard without any modification. Licensed Copy: she
22、ffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6508-1:1999 ii BSI 03-2000 Contents Page Forewordiii Introduction1 1Scope1 2Normative reference1
23、3Principle1 4Symbols and designations2 5Testing machine4 6Test piece4 7Procedure4 8Uncertainty of the results5 9Test report5 Annex A (normative) Conventional HR30Tm test for thin products6 Annex B (normative) Minimum thickness of the test piece in relation to the Rockwell hardness7 Annex C (normativ
24、e) Corrections to be added to Rockwell hardness values obtained on convex cylindrical surfaces10 Annex D (normative) Corrections to be added to Rockwell hardness C scale values obtained on spherical test surfaces of various diameters12 Annex E (informative) Procedure for periodic checks of the testi
25、ng machines by the user12 Annex F (informative) Notes on diamond indenters12 BibliographyInside back cover Figure 1 Rockwell principle diagram3 Figure B.1 Test with diamond cone indenter (scales A, C and D)7 Figure B.2 Test with ball indenters (scales B, E, F, G, H and K)8 Figure B.3 Rockwell superf
26、icial test (scales N and T)9 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6508-1:1999 BSI 03-2000iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO memb
27、er 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 organizations, government
28、al 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Direct
29、ives, Part 3. Draft International 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. International Standard 6508-1 was prepared by the Technical
30、 Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing. This first edition of ISO 6508-1 cancels and replaces ISO 6508:1986 and ISO 1024:1989, of which it constitutes a technical revision as follows: Combination of the two different International Standards for the d
31、ifferent scales (ISO 6508:1986 and ISO 1024:1989) into this part of ISO 6508. Addition of clause 8 concerning the accuracy of the test results. Addition of Annex A concerning the conventional HR30Tm test for thin products. Addition of Annex E concerning a procedure for a periodic check of the testin
32、g machines by users. Addition of Annex F concerning notes on diamond indenters. Addition of a hardmetal ball as indenters. ISO 6508 consists of the following pads, under the general title Metallic materials Rockwell hardness test: Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T); Part 2:
33、 Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T); Part 3: Calibration of reference blocks (scales A, B, C, D, E, F, G, H, K, N, T). Annex A, Annex B, Annex C and Annex D form a normative part of this part of ISO 6508. Annex E and Annex F are for information
34、only. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6508-1:1999 BSI 03-20001 Introduction The force values in this p
35、art of ISO 6508 were calculated from kilogram force values. They were introduced before the SI-system was adopted. It was decided to keep the values based on the old units for this part of ISO 6508 but for the next revision it will be necessary to consider the advantage of introducing rounded values
36、 of test force and the consequence on the hardness scales. Attention is drawn to the fact that in this part of ISO 6508, the use of hardmetal balls as indenters is equivalent to the use of steel balls; however, it is indicated that the measurements made with the two ball types give different results
37、. 1 Scope This part of ISO 6508 specifies the method for Rockwell and Rockwell superficial hardness tests (scales and field of application in accordance with Table 1) for metallic materials. For specific materials and/or products, other specific International Standards apply (for instance ISO 3738-1
38、 and ISO 4498-1). NOTEFor certain materials, the fields of application may be narrower than those indicated. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 6508. For dated references, subsequ
39、ent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 6508 are encouraged to investigate the possibility of applying the most recent edition of the normative documents indicated below. For undated references, the latest e
40、dition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 6508-2:1999, Metallic materials Rockwell hardness test Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T). 3
41、Principle Forcing an indenter (diamond cone, steel or hardmetal ball) into the surface of a test piece in two steps under specified conditions (see clause 7). Measuring the permanent depth h of indentation under preliminary test force after removal of additional test force. From the value of h and t
42、he two constant numbers N and S (see Table 2), the Rockwell hardness is calculated following the formula: Rockwell hardness = N h S - - Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6508-1:1999 2 BSI 03-2000 4 Symbols and designatio
43、ns See Table 1 and Table 2 and Figure 1. Table 1 Rockwell scales Table 2 Symbols and designations Rockwell hardness scale Hardness symbola Type of indenterPreliminary test force F0 Additional test force F1 Total test force F Field of application (Rockwell hardness test) mmNNN AHRADiamond cone98,0749
44、0,3588,420 HRA to 88 HRA BHRBBall 1,587 5 mm98,07882,6980,720 HRB to 100 HRB CHRCDiamond cone98,071 3731 47120 HRC to 70 HRC DHRDDiamond cone98,07882,6980,740 HRD to 77 HRD EHREBall 3,175 mm98,07882,6980,770 HRE to 100 HRE FHRFBall 1,587 5 mm98,07490,3588,460 HRF to 100 HRF GHRGBall 1,587 5 mm98,071
45、 3731 47130 HRG to 94 HRG HHRHBall 3,175 mm98,07490,3588,480 HRH to 100 HRH KHRKBall 3,175 mm98,071 3731 47140 HRK to 100 HRK 15NHR15NDiamond cone29,42117,7147,170 HR15N to 94 HR15N 30NHR30NDiamond cone29,42264,8294,242 HR30N to 86 HR30N 45NHR45NDiamond cone29,42411,9441,320 HR45N to 77 HR45N 15THR1
46、5TBall 1,587 5 mm29,42117,7147,167 HR15T to 93 HR15T 30THR30TBall 1,587 5 mm29,42264,8294,229 HR30T to 82 HR30T 45THR45TBall 1,587 5 mm29,42411,9441,310 HR45T to 72 HR45T a For the scales using the ball indenters, the hardness symbol is to be completed with “S”, if the steel ball indenter is used an
47、d with “W”, if the hardmetal ball is used. SymbolDesignationUnit F0Preliminary test forceN F1Additional test forceN FTotal test forceN SScale unit, specific to the scalemm NNumber, specific to the scale hPermanent depth of indentation under preliminary test force after removal of additional test for
48、ce (permanent indentation depth) mm HRA Rockwell hardness = 100 HRC HRD HRB Rockwell hardness = 130 HRE HRF HRG HRH HRK HRN Rockwell hardness = 100 HRT h 0,002 - - h 0,002 - - h 0,001 - - Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:15:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN IS
49、O 6508-1:1999 BSI 03-20003 4.1 The Rockwell hardness for the scales A, C and D is denoted by the symbol HR preceded by the hardness value and completed by a letter indicating the scale. EXAMPLE 59 HRC = Rockwell hardness of 59, measured on the C scale. 4.2 The Rockwell hardness for the scales B, E, F, G, H and K is denoted by the symbol HR preceded by the hardness value and completed by a letter indicating the scale and a letter for the applied type of ball