1、February 2015Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 77.040.10!%:“2292397www.din.deDDIN EN ISO 6506-1Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2014);English version EN ISO 6506-1:2014,English translation of DIN EN ISO 6506-1:2015-02Metallische Werkstoffe Hrteprfung nach Brinell Teil 1: Prfverfahren (ISO 6506-1:2014);En
3、glische Fassung EN ISO 6506-1:2014,Englische bersetzung von DIN EN ISO 6506-1:2015-02Matriaux mtalliques Essai de duret Brinell Partie 1: Mthode dessai (ISO 6506-1:2014);Version anglaise EN ISO 6506-1:2014,Traduction anglaise de DIN EN ISO 6506-1:2015-02SupersedesDIN EN ISO 6506-1:2006-03www.beuth.d
4、eIn case of doubt, the German-language original shall be considered authoritative.Document comprises 24 pages01.15 DIN EN ISO 6506-1:2015-02 2 A comma is used as the decimal marker. National foreword This document (EN ISO 6506-1:2014) has been prepared by Technical Committee ISO/TC 164 “Mechanical t
5、esting of metals”, Subcommittee SC 3 “Hardness testing” (Secretariat: DIN, Germany) in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” (Secretariat: AFNOR, France) in accordance with the agreement on technical cooperation between ISO and CE
6、N (Vienna Agreement). The responsible German body involved in its preparation was the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-01-41 AA Hrteprfung fr Metalle. The scope of this standard is no longer restricted to 650 HBW. However, Worki
7、ng Committee NA 062-01-41 AA recommends that this restriction be maintained. DIN EN 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 referenc
8、e blocks Part 4: Table of hardness values The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 4498 DIN ISO 4498 ISO 6506-2 DIN EN ISO 6506-2 ISO 6506-3 DIN EN ISO 6506-3 ISO 6506-4 DIN EN ISO 6506-4 ISO 18265 DIN EN ISO 18265 Amendments Thi
9、s standard differs from DIN EN ISO 6506-1:2006-03 as follows: a) the Introduction has been deleted; b) the scope is no longer restricted to 650 HBW; c) in Subclause 7.2, it has been specified that a daily check of the testing machine in accordance with Annex A is mandatory; the status of Annex A has
10、 been changed from informative to normative; d) in Subclause 7.3, it has been specified that other test forces and force-diameter indices can be used upon agreement; e) in Subclause 7.6, specific nominal values for the time durations have been specified; f) in Subclause 7.9, specifications regarding
11、 the measurement of indentations have been revised; g) Clause 9 “Test report” has been supplemented by further requirements; h) Annex C “Uncertainty of the measured hardness values” has been revised; i) the standard has been editorially revised. DIN EN ISO 6506-1:2015-02 3 Previous editions DIN 1605
12、-3: 1936-02 DIN 50351: 1942-10, 1970-05, 1973-01, 1985-02 DIN ISO 410: 1985-03 DIN EN 10003-1: 1995-01 DIN EN ISO 6506-1: 1999-10, 2006-03 National Annex NA (informative) Uncertainty of the measured hardness values NA.1 General In this part of ISO 6506, Annex C gives an example of assessing the unce
13、rtainty of measured hardness values. This national Annex gives an alternative, simplified method for calculating uncertainty. This method makes use of the uncertainty of the hardness testing machine, calculated as in Part 2 of this standards series and stated in the calibration certificate for the m
14、achine. Thus, a simpler method is made available to the user. The metrological chain needed for defining and disseminating hardness scales is shown in Figure C.1. NA.2 Indirect calibration of the hardness testing machine by the user Indirect calibration by means of hardness reference blocks (referre
15、d to below as CRM (certified reference material) serves to check the overall functioning of the hardness testing machine, and to determine its repeatability and deviation from the real hardness value. The uncertainty of the results of indirect calibration is calculated using the following equation:
16、2ms2DCRM2H2CRMHTMuuuuu +=(NA.1) where uCRMis the calibration uncertainty of the hardness reference block for k = 1; uHis the repeatability of the testing machine; uCRMDis the hardness change of the reference block since its last calibration, due to drift; umsis the measurement uncertainty due to the
17、 resolution of the optical measuring system in case of digital increments of =32msmsu . EXAMPLE Hardness of CRM HCRM= (591,7 3,6) HBW 2,5/187,5 Uncertainty of CRM uCRM= 1,8 HBW 2,5/187,5 Drift of CRM uCRMD= 0 Resolution of optical measuring system ms= 0,5 m DIN EN ISO 6506-1:2015-02 4 Table NA.1 Res
18、ults of indirect calibration No. Measured indentation diagonal, d, mm Calculated hardness value, H, HBW 1 0,630 5max591,4min2 0,630 0 592,3 3 0,629 5min593,3max4 0,629 7 592,9 5 0,629 5 593,3 Mean value, H 0,629 8 592,6 Standard deviation, sH0,000 42 0.80 5HHstu= (NA.2) For t = 1,14, n = 5 and sH= 0
19、,80 HBW2,5/187,5: uH= 0,41 HBW 2,5/187,5 Table NA.2 Uncertainty budget Quantity, XiEstimated value, XiUncertainty of measurement, u(xi) Distribution type Sensitivity coefficient, c Uncertainty contribution, ui(H) uCRM591,7 HBW 1,8 HBW Normal 1,0 1,8 HBW uH0 HBW 0,41 HBW Normal 1,0 0,41 HBW ums0,0005
20、 mm 0,00014 mm Rectangular 1910,3 HBW/mma0,27 HBW uCRM-D0 HBW 0 HBW Triangular 1,0 0 HBW Combined uncertainty of measurement, uHTM1,87 HBW Expanded uncertainty of measurement, UHTM(k = 2) 3,7 HBW aThe sensitivity coefficient is given by: 2222dDdDDdHdHc+= (NA.3) For H = 591,7 HBW, D = 2,5 mm, d = 0,6
21、29 8 mm DIN EN ISO 6506-1:2015-02 5 NA.3 Uncertainty of hardness test results The uncertainty of hardness test results is given by the following equation: 2x2HTMuuu += (NA.4) where uHis the uncertainty of the hardness testing machine; uxis the standard deviation due to inhomogeneity of the hardness
22、distribution in the test piece. Table NA.3 Determining inhomogeneity of test piece No. Measured indentation diagonal, d, mm Calculated hardness value, H, HBW 1 0,630 4max591,0min2 0,630 1 591,6 3 0,629 4min592,9max4 0,629 6 592,5 5 0,629 7 592,3 Mean value, H 0,629 8 592,1 Standard deviation, sx0,00
23、0 40 0,76 The standard uncertainty of the test piece is 5xxstu= (NA.5) For t = 1,14, n = 5 and sx= 0,76: ux= 0,39 HBW The expanded uncertainty of measurement is given by the following equation: ukU = (NA.6) where k = 2. Table NA.4 Uncertainty of test piece Hardness of CRM, H, HBW Inhomogeneity of te
24、st piece, ux, HBW Uncertainty of hardness testing machine, uHTM, HBW Expanded uncertainty of test piece, U, HBW 592,1 0,39 1,87 3,8 DIN EN ISO 6506-1:2015-02 6 National Annex NB (informative) Bibliography DIN ISO 4498, Sintered metal materials, excluding hardmetals Determination of apparent hardness
25、 and microhardness DIN EN ISO 6506-2, Metallic materials Brinell hardness test Part 2: Verification and calibration of testing machines DIN EN ISO 6506-3, Metallic materials Brinell hardness test Part 3: Calibration of reference blocks DIN EN ISO 6506-4, Metallic materials Brinell hardness test Part
26、 4: Tables of hardness values DIN EN ISO 18265, Metallic materials Conversion of hardness values EN ISO 6506-1September 2014 ICS 77.040.10 Supersedes EN ISO 6506-1:2005English Version Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:2014) Matriaux mtalliques - Essai de du
27、ret 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 members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th
28、e 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard
29、 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 Management Centre has the same status as the official versions. CEN members are the nationa
30、l 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, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovak
31、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 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 EEUROPEAN COMMITTEE FOR STAN
32、DARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM2DIN EN ISO 6506-1:2015-02 EN ISO 6506-1:2014 (E) Contents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Principle 4 4 Symbols and abbreviated terms . 4 5 Apparatus 6 6 T
33、est piece 6 7 Procedure 7 8 Uncertainty of the results 9 9 Test report . 9 Annex A (normative) Procedure for periodic checking of the testing machine by the user . 10 Annex B (normative) Minimum thickness of the test piece in relation to the mean diameter of indentation 11 Annex C (informative) Unce
34、rtainty of the measured hardness values . 13 Bibliography 18 ForewordThis document (EN ISO 6506-1:2014) 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)” th
35、e 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 March 2015, and conflicting national standards shall be withdrawn at the latest by March 2015. Attention is
36、 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 responsible for identifying any or all such patent rights. This document supersedes EN ISO 6506-1:2005. According to the CEN-CENELEC Internal Regulations, th
37、e national standards organizations of the following countries are bound to implement 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, Latvi
38、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6506-1:2014 has been approved by CEN as EN ISO 6506-1:2014 without any modification. EN ISO 6506 consists
39、 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 hardness values 3DIN EN ISO 6506-1:2015-02EN ISO 6506-1:2014 (E)1 ScopeThis
40、 part of ISO 6506 specifies the method for the Brinell hardness test for metallic materials. It is applicable to both fixed location 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
41、 International Standard.2 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 docume
42、nt (including any amendments) applies.ISO 4498, Sintered metal materials, excluding hardmetals Determination of apparent hardness and microhardnessISO 6506-2:2014, Metallic materials Brinell hardness test Part 2: Verification and calibration of testing machinesISO 6506-3:2014, Metallic materials Bri
43、nell hardness test Part 3: Calibration of reference blocksISO 6506-4, Metallic materials Brinell hardness test Part 4: Table of 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
44、diameter of the indentation, d, left in the surface is measured.The Brinell hardness is proportional to the quotient obtained 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
45、calculated from the mean indentation diameter and the ball diameter, using the formula given in Table 1.4 Symbols and abbreviated terms4.1 See Figure 1 and Table 1.4DIN EN ISO 6506-1:2015-02 EN ISO 6506-1:2014 (E) Table 1 Symbols and abbreviated termsSymbol/ abbreviated termDefinition UnitD Diameter
46、 of the ball mmF Test force Nd Mean diameter of the indentationddd=+122mmd1, d2Indentation diameters measured 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
47、indexNOTE constant =0 10219 80665, where 9,806 65 is the conversion factor from kgf to N.4.2 The following 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
48、applied test force, where 30 kgf = 294,2Nball diameter in mmhardness symbolBrinell hardness valueNOTE In former editions of this International Standard, when use of a steel ball was permitted, the Brinell hardness was denoted by HB or HBS.5DIN EN ISO 6506-1:2015-02EN ISO 6506-1:2014 (E)Figure 1 Prin
49、ciple of testFor symbols, see Table 1.5 Apparatus5.1 Testing machine, capable of applying 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
