ISO-2039-1-2001.pdf
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1、 Reference number ISO 2039-1:2001(E) ISO 2001 INTERNATIONAL STANDARD ISO 2039-1 Third edition 2001-12-01 Plastics Determination of hardness Part 1: Ball indentation method Plastiques Dtermination de la duret Partie 1: Mthode de pntration la bille ISO 2039-1:2001(E) PDF disclaimer This PDF file may c
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4、parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless oth
5、erwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyrig
6、ht office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved ISO 2039-1:2001(E) ISO 2001 All rights reserved iii Contents Page Foreword.iv 1 Scope1 2 Normative reference1 3 Term a
7、nd definition .1 4 Principle1 5 Apparatus.2 6 Test specimens2 7 Conditioning.2 8 Procedure.2 9 Expression of results3 10 Test report4 Annex A (informative) Value of the ball indentation hardness as a function of the depth of penetration and the test load 5 ISO 2039-1:2001(E) iv ISO 2001 All rights r
8、eserved Foreword ISO (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 w
9、hich a technical committee 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
10、 matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are c
11、irculated to the member 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 part of ISO 2039 may be the subject of patent rights. ISO shall not be h
12、eld responsible for identifying any or all such patent rights. ISO 2039-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties. This third edition cancels and replaces the second edition (ISO 2039-1:1993), subclause 8.3 and annex A of which have been tech
13、nically revised. ISO 2039 consists of the following parts, under the general title Plastics Determination of hardness: Part 1: Ball indentation method Part 2: Rockwell hardness Annex A of this part of ISO 2039 is for information only. -,-,- INTERNATIONAL STANDARD ISO 2039-1:2001(E) ISO 2001 All righ
14、ts reserved 1 Plastics Determination of hardness Part 1: Ball indentation method 1 Scope This part of ISO 2039 specifies a method for determining the hardness of plastics and ebonite by means of a loaded ball indenter. The ball indentation hardness determined by this method may provide data for rese
15、arch and development, quality control and acceptance or rejection under specifications. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 2039. For dated references, subsequent amendments to, or
16、 revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 2039 are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normativ
17、e document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 291:1997, Plastics Standard atmospheres for conditioning and testing 3 Term and definition For the purposes of this part of ISO 2039, the following term and definition apply. 3.1
18、 ball indentation hardness HB the quotient of the load on the ball indenter by the surface area of the impression caused by the ball indenter after a specified time of load application NOTE It is expressed in newtons per square millimetre. 4 Principle The method consists of forcing a ball under a sp
19、ecified load into the surface of the test specimen. The depth of impression is measured under load. The surface area of the impression is computed from its depth. The ball indentation hardness is then calculated from the following relationship: Ball indentation hardness = Applied load/Surface area o
20、f impression -,-,- ISO 2039-1:2001(E) 2 ISO 2001 All rights reserved 5 Apparatus 5.1 Hardness tester, consisting essentially of a frame with an adjustable platform fitted with a plate to support the test specimen, an indenter with its associated fittings and a device for applying the load without im
21、pact. The tester shall also be equipped with a device to measure the depth of penetration of the indenter over a range of 0,4 mm with an accuracy of 0,005 mm. The frame shall not be deformed under the maximum load by more than 0,05 mm, the deformation being measured along the main axis of the applie
22、d force. The indenter shall be a hardened and polished steel ball. The ball shall not show any deformation or damage after the test. The diameter of the ball shall be (5,0 0,05) mm. 5.2 Timing device, accurate to 0,1 s 6 Test specimens Each test specimen shall be a smooth flat sheet or block of suff
23、icient size to minimize edge effects on the test result; for example 20 mm 20 mm. The surfaces of the test specimen shall be parallel. A thickness of 4 mm is recommended. The supported surface of the test specimen shall not show any deformation after testing. NOTE 1 If test specimens with thicknesse
24、s less than 4 mm are to be tested, it is possible to stack several test specimens on top of each other. However, hardness values obtained on stacked test specimens and on single test specimens of the same thickness may be different. NOTE 2 Although every effort should be made to ensure the paralleli
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