1、August 2010 Translation by DIN-Sprachendienst.English price group 7No 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
2、77.160!$jB5“1713118www.din.deDDIN EN ISO 3369Impermeable sintered metal materials and hardmetals Determination of density (ISO 3369:2006)English translation of DIN EN ISO 3369:2010-08Undurchlssige Sintermetallwerkstoffe und Hartmetalle Ermittlung der Dichte (ISO 3369:2006)Englische bersetzung von DI
3、N EN ISO 3369:2010-08Matriaux en mtal fritt impermable et mtaux-durs Dtermination de la masse volumique (ISO 3369:2006)Traduction anglaise de DIN EN ISO 3369:2010-08SupersedesDIN ISO 3369:1990-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document com
4、prises 9 pages08.10 DIN EN ISO 3369:2010-08 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy” (Secretariat: SIS, Sweden) in collaboration with Technical Committee CEN/SS M11 “Powder metallurgy” (Secretaria
5、t: CMC). The responsible German body involved in its preparation was the Normenausschuss Werkstofftechnologie (Technology of Materials Standards Committee), Working Committee NA 145-01-03 AA Probenahme und Prfverfahren fr Sintermetalle (ausgenommen Hartmetalle). The DIN Standards corresponding to th
6、e International Standards referred to in clause 2 of this document are as follows: ISO 4489 DIN ISO 4489 ISO 2738:1999 DIN EN ISO 2738:2000-02 Amendments This standard differs from DIN ISO 3369:1990-10 as follows: a) Values for the density of distilled water in Table 1 have been corrected. b) Clause
7、 9 “Precision statement (Statement of accuracy)” has been added. c) The standard has been editorially revised. Previous editions DIN ISO 3369: 1990-10 National Annex NA (informative) Bibliography DIN ISO 4489, Sintered hardmetals Sampling and testing DIN EN ISO 2738:2000-12, Sintered metal materials
8、, excluding hardmetals Permeable sintered metal materials Determination of density, oil content and open porosity 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 - Determin
9、ation 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 members
10、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 application t
11、o 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 the s
12、ame 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, Poland,
13、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 any m
14、eans reserved worldwide for CEN national Members. Ref. No. EN ISO 3369:2010: EContents DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 2 Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle4 4 Apparatus and materials.4 5 Test piece .5 6 Procedure .5 7 Expression of results 6 8 Test report 6 9
15、Precision statement (Statement of accuracy).6 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 been taken over as EN ISO 3369:2010. This European Standard shall be given the
16、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 drawn to the possibility that some of the elements of this document may be the
17、 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 national standards organizations of the following countries are bound to implement
18、 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
19、land 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. DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 3 1 Scope This International Standard specifies a method of determining the density of impermeable sintered
20、metal materials and hardmetals. NOTE For the determination of density of permeable sintered metal materials, see ISO 2738:1999, Sintered metal materials, excluding hardmetals Permeable sintered metal materials Determination of density, oil content and open porosity. 2 Normative references The follow
21、ing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4489, Sintered hardmetals Sampling and testing 3 Princi
22、ple Weighing of a test piece, first in air and then in a liquid, and determination of the density by calculation. 4 Apparatus 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 calibrat
23、ed 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. 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,
24、 for the weighing liquid. For test pieces of volume less than 10 cm3the vessel shall be dimensioned so that, when the test piece 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 agen
25、t have been added. The following values shall be used for the density in air, w, of distilled water (see Table 1). DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 4 Table 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
26、 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 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
27、 than the true density of water measured in a vacuum. 5 Test piece 5.1 Sampling shall be carried out in accordance 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 t
28、ogether to make one determination, provided that each piece has a volume not less than 0,05 cm3. 5.3 The surface 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 (Figur
29、e 2). The lower rack shall be completely immersed and the suspension wire shall be hanging freely from the 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
30、2). Lower the test piece into the vessel containing the liquid so that only the suspension wire breaks the 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 surr
31、ounding air shall be at the same temperature when weighing is carried out. The temperature of the liquid shall be determined. When distilled water is used, its density shall be taken from Table 1. DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 5 7 Expression of results The density , of the test piece,
32、 in grams per cubic centimetre, is given by the formula: 1l2mm= where lis the density in 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 subtr
33、acting the apparent mass of the test piece in the liquid from the mass of the test piece 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 id
34、entification 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 result. 9 Precision statement (Statement of accuracy) For test specimens of over 5 g mass, the re
35、peatability interval, r, is 0,025 g/cm3. Duplicate results from the same laboratory should 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 l
36、aboratories should not be considered suspect at the 95 % confidence level, unless they 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 estim
37、ate of bias because there is no accepted reference material. NOTE With permission, this 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. DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 6 a) Weighing in air b) Weighing in water Figure 1 Rack method a) Weighing in air b) Weighing in water Figure 2 Pan method DIN EN ISO 3369:2010-08 EN ISO 3369:2010 (E) 7
