1、BS EN ISO3369:2010ICS 77.160NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDImpermeable sinteredmetal materialsand hardmetals Determination ofdensity (ISO 3369:2006)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommitte
2、e on 31 May 2010 BSI 2010ISBN 978 0 580 69468 4Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 3369:2010National forewordThis British Standard is the UK implementation of EN ISO 3369:2010. Itis identical to ISO 3369:2006. It supersedes BS EN 23369:1993 which iswithdrawn.The UK p
3、articipation in its preparation was entrusted to TechnicalCommittee ISE/65, Sintered metal components.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are res
4、ponsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3369 April 2010 ICS 77.160 Supersedes EN 23369:1993English Version Impermeable sintered metal materials and hardmetals - Deter
5、mination of density (ISO 3369:2006) Matriaux en mtal fritt impermable et mtaux-durs - Dtermination de la masse volumique (ISO 3369:2006) Undurchlssige Sintermetallwerkstoffe und Hartmetalle - Ermittlung der Dichte (ISO 3369:2006) This European Standard was approved by CEN on 16 April 2010. CEN membe
6、rs 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 references concerning such national standards may be obtained on applicatio
7、n to the CEN 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 member into its own language and notified to the CEN Management Centre has th
8、e same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
9、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by an
10、y means reserved worldwide for CEN national Members. Ref. No. EN ISO 3369:2010: EBS EN ISO 3369:2010EN ISO 3369:2010 (E) 3 Foreword The text of ISO 3369:2006 has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy” of the International Organization for Standardization (ISO) and has be
11、en taken over as EN ISO 3369:2010. 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 October 2010, and conflicting national standards shall be withdrawn at the latest by October 2010. Attention is d
12、rawn 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 23369:1993. According to the CEN/CENELEC Internal Regulations, the natio
13、nal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
14、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 3369:2006 has been approved by CEN as a EN ISO 3369:2010 without any modification. BS EN ISO 3369:2010ISO 3369:2006(E) ISO 2006 All rights reserved iiiContents
15、 Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Principle. 1 4 Apparatus and materials 1 5 Test piece 2 6 Procedure 2 7 Expression of results . 3 8 Test report . 3 9 Precision statement (Statement of accuracy) 3 BS EN ISO 3369:2010ISO 3369:2006(E) iv ISO 2006 All rights reservedForeword I
16、SO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member 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 c
17、ommittee has been established has the right to be represented on that committee. International organizations, governmental 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 electr
18、otechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the m
19、ember bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identi
20、fying any or all such patent rights. ISO 3369 was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 3, Sampling and testing methods for sintered metal materials (excluding hardmetals). This second edition cancels and replaces the first edition (ISO 3369:1975) which has b
21、een technically revised by giving correct values for the density of distilled water in Table 1 and by adding Clause 9, Precision statement (Statement of accuracy). Editorial changes have also been made. BS EN ISO 3369:2010INTERNATIONAL STANDARD ISO 3369:2006(E) ISO 2006 All rights reserved 1Impermea
22、ble sintered metal materials and hardmetals Determination of density 1 Scope This International Standard specifies a method of determining the density of impermeable sintered metal materials and hardmetals. NOTE For the determination of density of permeable sintered metal materials, see ISO 2738:199
23、9, Sintered metal materials, excluding hardmetals Permeable sintered metal materials Determination of density, oil content and open porosity. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited
24、 applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4489, Sintered hardmetals Sampling and testing 3 Principle Weighing of a test piece, first in air and then in a liquid, and determination of the density by calculation. 4 Apparatus
25、 and materials 4.1 Precision balance, having a capacity which will permit readings within 0,1 mg, on weighings up to 10 g and 0,001 % above 10 g. The weights shall be calibrated and have a density of not less than 7 g/cm3. 4.2 Arrangement of racks or a suspension wire, according to Figures 1 and 2.
26、In each case, the suspension wire shall have a maximum diameter of 0,25 mm. A heavier gauge wire shall only be used if this is necessary to support the test piece. 4.3 Vessel, for the weighing liquid. For test pieces of volume less than 10 cm3the vessel shall be dimensioned so that, when the test pi
27、ece is lowered into the liquid, the rise in liquid level is less than 2,5 mm. 4.4 Distilled or deionized and preferably degassed water, to which 1 or 2 drops of a wetting agent have been added. The following values shall be used for the density in air, w, of distilled water (see Table 1). BS EN ISO
28、3369:2010ISO 3369:2006(E) 2 ISO 2006 All rights reservedTable 1 Density in the air, w, of distilled water Temperature wC g/cm315 0,999 1 16 0,998 9 17 0,998 8 18 0,998 6 19 0,998 4 20 0,998 2 21 0,998 0 22 0,997 8 23 0,997 5 24 0,997 3 25 0,997 0 26 0,996 8 27 0,996 5 28 0,996 2 29 0,995 9 30 0,995
29、6 NOTE 1 Other liquids may be used if their density in air, at the testing temperature, is known to four decimal places. NOTE 2 Using brass weights in air, the value of wis 0,001 06 g/cm3smaller than the true density of water measured in a vacuum. 5 Test piece 5.1 Sampling shall be carried out in ac
30、cordance with ISO 4489. 5.2 The volume of the test piece shall be at least 0,5 cm3. If it is required to determine the density of pieces having a volume less than 0,5 cm3, group several pieces together to make one determination, provided that each piece has a volume not less than 0,05 cm3. 5.3 The s
31、urface of the test piece shall be thoroughly cleaned from adhering foreign material, such as dirt, grease and oil. 6 Procedure 6.1 Place the test piece in the upper rack (Figure 1) or pan (Figure 2). The lower rack shall be completely immersed and the suspension wire shall be hanging freely from the
32、 pan and partially immersed in the liquid. Remove all air bubbles and weigh the test piece (m1). 6.2 Place the test piece on the lower rack (Figure 1) or suspend it by means of the wire (Figure 2). Lower the test piece into the vessel containing the liquid so that only the suspension wire breaks the
33、 surface of the liquid. Remove all air bubbles and weigh. 6.3 Weighings up to 10 g shall be read to 0,1 mg, and weighings above 10 g shall be read to 0,001 %. 6.4 The test piece, liquid and surrounding air shall be at the same temperature when weighing is carried out. The temperature of the liquid s
34、hall be determined. When distilled water is used, its density shall be taken from Table 1. BS EN ISO 3369:2010ISO 3369:2006(E) ISO 2006 All rights reserved 37 Expression of results The density , of the test piece, in grams per cubic centimetre, is given by the formula: 1l2mm= where lis the density i
35、n air of the liquid, in grams per cubic centimetre; m1is the mass, in grams, of the test piece determined by weighing in air; m2is the mass, in grams, of the liquid displaced by the test piece, determined by subtracting the apparent mass of the test piece in the liquid from the mass of the test piec
36、e in air. Report the result, rounded to the nearest 0,01 g/cm3. 8 Test report The test report shall include the following information: a) a reference to this International Standard; b) all details necessary for identification of the test sample; c) the result obtained; d) all operations not specifie
37、d by this International Standard, or regarded as optional; e) details of any occurrence which may have affected the result. 9 Precision statement (Statement of accuracy) For test specimens of over 5 g mass, the repeatability interval, r, is 0,025 g/cm3. Duplicate results from the same laboratory sho
38、uld not be considered suspect at the 95 % confidence level, unless they differ by more than r. For test specimens of over 5 g mass, the reproducibility interval, R, is 0,03 g/cm3. Test results from two different laboratories should not be considered suspect at the 95 % confidence level, unless they
39、differ by more than R. For test specimens of 1 g to 5 g mass, the repeatability interval, r, is 0,025 g/cm3. For test specimens of 1 g to 5 g mass, the reproducibility interval, R, is 0,05 g/cm3. There is no estimate of bias because there is no accepted reference material. NOTE With permission, this
40、 clause was taken from ASTM (American Society for Testing and Materials) Standard B 311-93: Test method for density determination for powder metallurgy (P/M) materials containing less than two percent porosity. BS EN ISO 3369:2010ISO 3369:2006(E) 4 ISO 2006 All rights reserveda) Weighing in air b) W
41、eighing in water Figure 1 Rack method a) Weighing in air b) Weighing in water Figure 2 Pan method BS EN ISO 3369:2010BS EN ISO3369:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards InstitutionBSI is the independent nation
42、al body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at theinternational level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the late
43、st amendments oreditions.It is the constant aim of BSI to improve the quality of our products and services.We would be grateful if anyone finding an inaccuracy or ambiguity while usingthis British Standard would inform the Secretary of the technical committeeresponsible, the identity of which can be
44、 found on the inside front cover. Tel:+44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensuresthat subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standar
45、ds publications should beaddressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 89967001 Email: You may also buy directly using a debit/creditcard from the BSI Shop on the Website http:/ response to orders for international standards, it is BSI policy to supply theBSI implementati
46、on of those that have been published as British Standards,unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European andinternational standards through its Library and its Technical Help to ExportersService. Various BSI electronic information se
47、rvices are also available whichgive details on all its products and services. Contact Information Centre. Tel:+44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: Subscribing members of BSI are kept up to date with standards developmentsand receive substantial discounts on the purchase price of stand
48、ards. For detailsof these and other benefits contact Membership Administration. Tel: +44 (0)208996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding online access to British Standards via British StandardsOnline can be found at http:/ information about BSI is available on the BSI website at
49、 http:/.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in theUK, of the publications of the international standardization bodies. Except aspermitted under the Copyright, Designs and Patents Act 1988 no extract maybe reproduced, stored in a retrieval system or transmitted in any form or by anymeans electronic, photocopying, r
