1、BRITISH STANDARD BS EN 23312:1993 ISO 3312:1987 Sintered metal materials and hardmetals Determination of Young modulus The European Standard EN 23312:1993 has the status of a British Standard UDC 621.762.5:669-492.2:669.018.25:620.1:539.382BS EN23312:1993 This British Standard, having been prepared
2、under the directionof the Iron and SteelStandards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15June1993 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference ISM/65 Special announcement in BSINews Janu
3、ary 1993 ISBN 0 580 21919 4 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut
4、belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Sta
5、ndards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin
6、Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN23312:1993 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National forewo
7、rd ii Foreword 2 1 Scope and field of application 3 2 Reference 3 3 Principle 3 4 Symbols and units 3 5 Apparatus 3 6 Preparation of test pieces 3 7 Procedure 3 8 Expression of results 3 9 Test report 3 Annex ZA (normative) Normative references to international publicationswiththeir relevant Europea
8、n publications 4 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back coverBSEN23312:1993 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Iron and Steel Standards Polic
9、y Committee and is the English language version of EN23312:1993 Sintered metal materials and hardmetals Determination of Young modulus, published by the European Committee for Standardization (CEN). It is identical with ISO3312:1987, prepared by Technical Committee119, Powder metallurgy, of the Inte
10、rnational Organization for Standardization (ISO) with the active participation of the UK. This British Standard supersedes BS 5600-4.7:1979, which is withdrawn and from which it differs by the addition of Annex ZA. A British Standard does not purport to include all the necessary provisions of a cont
11、ract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 4,
12、 an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 23312 April 1993 UDC 621.762.5:669-492.2:
13、669.018.25:620.1:539.382 Descriptors: Powder metallurgy, sintered products, hard metals, modulus of elasticity, vibration tests English version Sintered metal materials and hardmetals Determinationof Young modulus (ISO 3312:1987) Matriaux mtalliques fritts et mtaux-durs Dtermination du module de You
14、ng (ISO 3312:1987) Sintermetallwerkstoffe und Hart-metalle Bestimmung des Young-Moduls (ISO3312:1987) This European Standard was approved by CEN on1993-04-02. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
15、e 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German
16、). 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 the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Ger
17、many, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyr
18、ight reserved to CEN members Ref. No. EN 23312:1993 EEN23312:1993 BSI 11-1999 2 Foreword In 1992, ISO 3312:1987 Sintered metal materials and hardmetals Determination of Young modulus was submitted to the CEN Primary Questionnaire procedure. Following the positive result of the CEN/CS Proposal ISO331
19、2:1987 was submitted to the Formal Vote. The result of the Formal Vote was positive. 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 October1993, and conflicting national standards shall be withdr
20、awn at the latest by October1993. According to the Internal Regulations of CEN/CENELEC, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swede
21、n, Switzerland and UnitedKingdom. NOTEThe European references to international publications are given in Annex ZA (normative).EN23312:1993 BSI 11-1999 3 1 Scope and field of application This International Standard specifies a method for the determination of the dynamic (adiabatic) Young modulus by l
22、ongitudinal oscillations of sintered metal materials and hardmetals. 2 Reference ISO 2738, Permeable sintered metal materials Determination of density, oil content and open porosity. 3 Principle Excitation of ultrasonic longitudinal oscillations in a test piece and determination of the resonance fre
23、quency of its natural oscillations. 4 Symbols and units 5 Apparatus 5.1 Fixture, for mounting test piece. 5.2 Ultrasonic oscillator, having a continuous control of frequencies in the range from20to100kHz. 5.3 Device, for determining resonance frequency. 6 Preparation of test pieces 6.1 The test piec
24、es shall be at least60mm long andmay have either a round or a rectangular cross-section. The test piece with round cross-section shall be6 0,2mm in diameter. The cross-section of the rectangular test piece shall be(6 0,2)mm (8 0,2)mm. 6.2 The surface layer shall be removed to a depth of at least0,1m
25、m. The surface roughness shall be R a u 1,254m. 6.3 The ends of the test piece shall be ground and shall be parallel to within0,02mm. 6.4 The test piece shall be free of surface cracks or other structural defects and shall be cleaned immediately before being tested. 7 Procedure 7.1 Determine the den
26、sity of the test piece to the nearest0,01g/cm 3according to ISO2738. 7.2 Measure the length of the test piece to the nearest0,1mm. 7.3 Mount the test piece in the apparatus. Smoothly increase the frequency of the oscillator until the lowest frequency of the natural longitudinal oscillations of the t
27、est piece is obtained. Determine the resonance frequency to the nearest50Hz. 8 Expression of results 8.1 Young modulus is given by the following equation: E = 4 10 9 L 2 f 2 Report the result rounded to the nearest5 10 3N/mm 2 . 9 Test report The test report shall include the following information:
28、a) reference to this International Standard; b) all details necessary for identification of the test sample; c) the result obtained; d) all operations not specified by this International Standard, or regarded as optional; e) details of any occurrence which may have affected the results. Symbol Desig
29、nation Unit L f E Length of test piece Density Frequency of natural oscillations Young modulus mm g/cm 3 Hz N/mm 2EN23312:1993 4 BSI 11-1999 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated
30、or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard onl
31、y when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). Publication Year Title EN/HD Year ISO 2738 Permeable sintered metal materials Determination ofdensity, oil content and open porosity BSEN23312:
32、1993 BSI 11-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Iron and Steel Standards Policy Committee (ISM/-) to Technical Committee ISM/65, upon which the following bodies were represented
33、: British Hardmetal Association Federation of British Engineers (Test Manufacturers) Society of Motor Manufacturers and Traders Limited Coopted member National annex NB (informative) Cross-reference Publication referred to Corresponding British Standard ISO 2738:1987 BS 5600 Powder metallurgical mat
34、erials and products Part 3 Methods of testing sintered metal materials and products, excluding hardmetals Section 3.2:1988 Determination of density, oil content and open porosityBS EN 23312:1993 ISO3312:1987 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independe
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