1、February 2016 English price group 14No 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).ICS 77.040.10!%LL.“2414111www.din.d
2、eDIN EN ISO 16859-1Metallic materials Leeb hardness test Part 1: Test method (ISO 16859-1:2015);English version EN ISO 16859-1:2015,English translation of DIN EN ISO 16859-1:2016-02Metallische Werkstoffe Hrteprfung nach Leeb Teil 1: Prfverfahren (ISO 16859-1:2015);Englische Fassung EN ISO 16859-1:20
3、15,Englische bersetzung von DIN EN ISO 16859-1:2016-02Matriaux mtalliques Essai de duret Leeb Partie 1: Mthode dessai (ISO 16859-1:2015);Version anglaise EN ISO 16859-1:2015,Traduction anglaise de DIN EN ISO 16859-1:2016-02SupersedesDIN 50156-1:2007-07www.beuth.deDocument comprises 28 pagesDTranslat
4、ion by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.02.16 DIN EN ISO 16859-1:2016-02 2 A comma is used as the decimal marker. National foreword This document (EN ISO 16859-1:2015) 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 DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-01-41 AA Hrteprfung fr Metalle. DIN EN ISO 16859 consists of the following parts, under the general title Metalli
7、c materials Leeb hardness test: Part 1: Test method Part 2: Verification and calibration of testing devices Part 3: Calibration of reference test blocks The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 4287 DIN EN ISO 4287 ISO 16859-2 DI
8、N EN ISO 16859-2 ISO 16859-3 DIN EN ISO 16859-3 ISO 18265 DIN EN ISO 18265 Amendments This standard differs from DIN 50156-1:2007-07 as follows: a) the number of the standard has been changed; b) the specifications for the types of impact devices are now more detailed; c) impact device type DC desig
9、ned with shortened guide tube as a special device type D is no longer included; d) the procedures for calculating measurement uncertainties have been brought in line with ISO/IEC Guide 98-3 (GUM); e) correction factors for use in tests not conducted in the direction of gravity have been included; f)
10、 the standard has been editorially revised. Previous editions DIN 50156-1: 2007-07 DIN EN ISO 16859-1:2016-02 3 National Annex NA (informative) Bibliography DIN EN ISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameters DIN
11、 EN ISO 16859-2, Metallic materials Leeb hardness test Part 2: Verification and calibration of testing devices DIN EN ISO 16859-3, Metallic materials Leeb hardness test Part 3: Calibration of reference test blocks DIN EN ISO 18265, Metallic materials Conversion of hardness values DIN EN ISO 16859-1:
12、2016-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 16859-1 October 2015 ICS 77.040.10 English Version Metallic materials - Leeb hardness test - Part 1: Test method (ISO 16859-1:2015) Matriaux mtalliques - Essai de duret Leeb - Partie 1 : Mthode dessai
13、 (ISO 16859-1:2015) Metallische Werkstoffe - Hrteprfung nach Leeb - Teil 1: Prfverfahren (ISO 16859-1:2015) This European Standard was approved by CEN on 10 July 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European St
14、andard 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 exists in three official versions (Engl
15、ish, 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 national standards bodies of Austria, Belgium,
16、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, Slovakia, Slovenia, Spain, Sweden, Switzerland
17、, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membe
18、rs. Ref. No. EN ISO 16859-1:2015 EEuropean foreword .31 Scope . 52 Normative references 53 Principle 54 Symbols, abbreviated terms, and designations 55 Testing instrument . 76 Test piece 76.1 Shape . 76.2 Thickness and mass 76.3 Surface preparation 87 Procedure. 88 Uncertainty of the results . 109 T
19、est report 1010 Conversions to other hardness scales or tensile strength values . 10Annex A (normative) Tables of correction factors for use in tests not conducted in direction of gravity 11Annex B (normative) Procedure for periodic checking of testing instrument by the user 15Annex C (informative)
20、Uncertainty of the measured Leeb hardness values 16Annex D (informative) Leeb hardness testing instruments 22Bibliography .24Contents PageDIN EN ISO 16859-1:2016-02 EN ISO 16859-1:2015 (E) 2Foreword 4European foreword This document (EN ISO 16859-1:2015) has been prepared by Technical Committee ISO/T
21、C 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 status of a national standard, either by publication of an identica
22、l text or by endorsement, at the latest by April 2016, and conflicting national standards shall be withdrawn at the latest by April 2016. 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 respons
23、ible for identifying any or all such patent rights. 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, Czech Republic, Denmark, Estonia, Finland
24、, 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 Kingdom. Endorsement notice The text of ISO
25、16859-1:2015 has been approved by CEN as EN ISO 16859-1:2015 without any modification. DIN EN ISO 16859-1:2016-02 EN ISO 16859-1:2015 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepari
26、ng 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, governmental and non-governmental, in lia
27、ison with 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 Dir
28、ectives, 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 s
29、ome of the 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 decla
30、rations received (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 ab
31、out ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary Information The committee responsible for this document is ISO/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing.ISO 16859 consists of the followi
32、ng parts, under the general title Metallic materials Leeb hardness test: Part 1: Test method Part 2: Verification and calibration of the testing devices Part 3: Calibration of reference test blocksDIN EN ISO 16859-1:2016-02 EN ISO 16859-1:2015 (E) 4 1 ScopeThis part of ISO 16859 covers the determina
33、tion of a dynamic hardness of metallic materials using seven different Leeb scales (HLD, HLS, HLE, HLDL, HLD+15, HLC, HLG).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,
34、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 16859-2, Metallic materials Leeb hardness test Part 2: Verification and calibration of the testing devicesISO 16859-3, Metallic materials Leeb hardness test Pa
35、rt 3: Calibration of reference test blocks3 PrincipleWhen testing hardness according to Leeb, a moving impact body collides at normal incidence with a surface and rebounds. The velocity of the impact body is measured before (vA) and after impact (vR). The energy amount absorbed by the test piece res
36、pectively dissipated in the test measures the dynamic Leeb hardness of the test piece. It is assumed that the impact body does not permanently deform.The ratio of the impact and rebound velocity values gives the coefficient of restitution for the impact configuration and energy used. This coefficien
37、t represents the proportion of initial kinetic energy returned to the impact body within the contact time of the impact.The hardness number according to Leeb, HL, is calculated as given in Formula (1)HL RA=vv1 000 (1)wherevRis rebound velocity;vAis impact velocity.By definition, the Leeb hardness is
38、 a ratio and thus becomes a quantity without dimensions.4 Symbols, abbreviated terms, and designations4.1 For most common Leeb scale and type of impact devices, see Table 1.NOTE Other parameter values can be used based on the specific agreement between the parties.DIN EN ISO 16859-1:2016-02 EN ISO 1
39、6859-1:2015 (E) 5 Table 1 Symbols, dimensions, designations, and parameters of Leeb scales according to type of impact devicesSymbol Unit DesignationParameters of types of impact devicesDaS E DL D+15 C GEAmJ Kinetic impact energyb11,5 11,4 11,5 11,95 11,2 3,0 90,0vAm/s Impact velocity2,05 2,05 2,05
40、1,82 1,7 1,4 3,0vRm/s Rebound velocity0,615 - 1,824 50,82 - 1,8860,615 - 1,8861,1092 - 1,7290,561 - 1,5130,49 - 1,3440,9 - 2,25mm Maximum distance of ball indenter from test piece surface at velocity measurement2,00 2,00 2,00 2,00 2,00 2,00 3,00M g Mass of impact body incl. ball indenter5,45 5,40 5,
41、45 7, 25 7,75 3,1 20,0R mm Spherical radius of indenter ball1,5 1,5 1,5 1,39 1,5 1,5 2,5Material of indenterWC-CocCdPCDeWC-CocWC-CocWC-CocWC-CocHL Leeb hardness HLD HLS HLE HLDL HLD+15 HLC HLGField of application300 HLD - 890 HLD400 HLS - 920 HLS300 HLE - 920 HLE560 HLDL - 950 HLDL330 HLD+15 - 890 H
42、LD+15350 HLC - 960 HLC300 HLG - 750 HLGaAlternative common designation “DC”.bImpact vertically down, in direction of gravity, rounded.cTungsten-carbide cobalt.dCeramics.ePolycrystalline diamond.4.2 The Leeb hardness number is followed by the symbol “HL” with one or more subsequent characters represe
43、nting the type of impact device.EXAMPLE 570 HLDLeeb hardness, HL, is measured using impact device type D in direction of gravity. Measurements using a different impact device type will deliver a different hardness number, as the result from Formula (1) depends on the parameters of each impact device
44、 type.For testing in other directions, the measured hardness number will be biased. In such cases, a correction shall be applied in accordance with Annex A. If the test is not conducted in direction of gravity, the testing direction and correction shall be recorded, and the adjusted hardness number
45、shall be given as the Leeb hardness result.DIN EN ISO 16859-1:2016-02 EN ISO 16859-1:2015 (E) 6 5 Testing instrument5.1 The instrument used for Leeb hardness testing consists of an impact device (for an example, see Annex D) and an electronic measuring and indicating unit to determine the impact and
46、 rebound velocity of the impact body.5.2 The impact body consists of a spherical indenter and the holder of the indenter, see Table 1.5.3 The support ring shall be mounted tightly to the bottom of the impact device. Except for impact device type DL, the support surface shall be designed to prevent m
47、ovement of the impact device during the test.The support ring should be checked regularly, as wear can affect the readings. Specifically, the bottom surface of the support ring should be visually inspected. Deposits and dirt should be removed.5.4 The instrument shall meet the requirements of ISO 168
48、59-2.6 Test piece6.1 Shape6.1.1 Leeb hardness testing can be done on test pieces of diverse shapes as long as the impact velocity vector is normal to the local surface region to be tested, and the support ring is stably placed on the test piece surface.6.1.2 Test pieces with curved surfaces (concave or convex) can be tested providing that the radius of curvature at the test location is not less than 50 mm for the i
