1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 7619-1:2010Rubber, vulcanized orthermoplastic Determinationof indentation hardnessPart 1: Durometer method (Shore hardness)BS ISO 7619-1:2010 BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of ISO 7619-1:2010. Itsupersedes BS ISO 7619-1:2004 + A1:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/22, Physical testing of rubber.A list of organizations represented on this committee can
3、 beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 65431 2ICS 83.060Compliance with a British Standard cannot confer immunity fromlegal obligations.Th
4、is British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2010.Amendments issued since publicationDate Text affectedBS ISO 7619-1:2010Reference numberISO 7619-1:2010(E)ISO 2010INTERNATIONAL STANDARD ISO7619-1Second edition2010-10-01Rubber, vulc
5、anized or thermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness) Caoutchouc vulcanis ou thermoplastique Dtermination de la duret par pntration Partie 1: Mthode au duromtre (duret Shore) BS ISO 7619-1:2010ISO 7619-1:2010(E) PDF disclaimer This PDF file may conta
6、in embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibil
7、ity of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation para
8、meters 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. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All ri
9、ghts reserved. Unless otherwise 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 t
10、he requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 7619-1:2010ISO 7619-1:2010(E) ISO 2010 All rights reserved iiiContents Page Forewor
11、d iv Introduction.v 1 Scope1 2 Normative references1 3 Principle and choice of durometer type1 4 Apparatus.2 4.1 Durometer types A, D and AO2 4.2 Durometer type AM .4 4.3 Stand.4 4.4 Durometer spring force calibration .5 5 Test pieces .5 5.1 General .5 5.2 Thickness .5 5.3 Surface6 6 Conditioning an
12、d test temperature6 7 Procedure.6 7.1 General .6 7.2 Test time.6 7.3 Measurements .6 8 Calibration and checking6 8.1 Calibration6 8.2 Checking using standard rubber blocks.7 9 Precision.7 10 Test report7 Annex A (informative) Precision for the type AM durometer compared to that of Micro IRHD testing
13、.8 Bibliography10 BS ISO 7619-1:2010ISO 7619-1:2010(E) iv ISO 2010 All rights reservedForeword 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 th
14、rough 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 liaison with ISO, also take part in the work. ISO collab
15、orates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 Stan
16、dards. Draft International Standards adopted by the technical committees are circulated 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
17、 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7619-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This second edition cancels and replaces
18、 the first edition (ISO 7619-1:2004), which has been technically revised to update the references to ISO 18898 for instrument calibration and ISO 23529 for the preparation of test pieces. It also incorporates the Amendment ISO 7619-1:2004/Amd.1:2008 which gives precision data (see Annex A). ISO 7619
19、 consists of the following parts, under the general title Rubber, vulcanized or thermoplastic Determination of indentation hardness: Part 1: Durometer method (Shore hardness) Part 2: IRHD pocket meter method BS ISO 7619-1:2010ISO 7619-1:2010(E) ISO 2010 All rights reserved vIntroduction The hardness
20、 of rubber, as measured by a durometer (Shore hardness) or an IRHD pocket meter, is determined from the response of the rubber to an applied indentation. The response is a complex one and will depend upon: a) the elastic modulus of the rubber; b) the viscoelastic properties of the rubber; c) the thi
21、ckness of the test piece; d) the geometry of the indentor; e) the pressure exerted; f) the rate of increase of pressure; g) the interval after which the hardness is recorded. Because of these factors, it is inadvisable to relate results using a durometer (Shore hardness) directly to IRHD values, alt
22、hough correlations have been established for some individual rubbers and compounds. Durometers were originally portable hand-held instruments that have proved to be particularly convenient for making measurements on products. Some laboratories now also use them on a stand with a weight applied to th
23、e pressure foot in order to improve precision. NOTE ISO 481specifies hardness measurements for determination of hardness between 10 IRHD and 100 IRHD. Further information on the relationship between the durometer values and IRHD values is given in the literature567. BS ISO 7619-1:2010BS ISO 7619-1:2
24、010INTERNATIONAL STANDARD ISO 7619-1:2010(E) ISO 2010 All rights reserved 1Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness) WARNING Persons using this part of ISO 7619 should be familiar with normal laboratory practice. This part of
25、ISO 7619 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. CAUTION Certain procedures specified in this p
26、art of ISO 7619 may involve the use or generation of substances, or the generation of waste, that could constitute a local environmental hazard. Reference should be made to appropriate documentation on safe handling and disposal after use. 1 Scope This part of ISO 7619 specifies a method for determi
27、ning the indentation hardness (Shore hardness) of vulcanized or thermoplastic rubber using durometers with the following scales: the A scale for rubbers in the normal-hardness range; the D scale for rubbers in the high-hardness range; the AO scale for rubbers in the low-hardness range and for cellul
28、ar rubbers; the AM scale for thin rubber test pieces in the normal-hardness range. 2 Normative references The following 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
29、 referenced document (including any amendments) applies. ISO 18898, Rubber Calibration and verification of hardness testers ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 Principle and choice of durometer type The property measured is the
30、depth of penetration of a specified indentor forced into the material under specified conditions. BS ISO 7619-1:2010ISO 7619-1:2010(E) 2 ISO 2010 All rights reservedWhen using durometers, the scale should be chosen as follows: for values less than 20 with a type D durometer: type A; for values less
31、than 20 with a type A durometer: type AO; for values over 90 with a type A durometer: type D; for thin test pieces (less than 6 mm thick): type AM. 4 Apparatus 4.1 Durometer types A, D and AO These durometers consist of the components specified in 4.1.1 to 4.1.5. 4.1.1 Pressure foot The pressure foo
32、t for types A and D shall have a diameter of 18 mm 0,5 mm and a central hole of diameter 3 mm 0,1 mm. For type AO, the pressure foot shall have a minimum area of 500 mm2with a central hole of diameter 5,4 mm 0,2 mm. The tolerances on the dimension of the central hole and the requirement for the size
33、 of the pressure foot only apply to instruments used on a stand. 4.1.2 Indentor The indentor shall be formed from a hardened-steel rod of diameter 1,25 mm 0,15 mm to the shape and dimensions shown in Figure 1 for type A durometers and Figure 2 for type D durometers. Type AO durometers shall have a r
34、ound indentor with a radius of 2,5 mm 0,02 mm in accordance with Figure 3. 4.1.3 Indicating device This is a device for allowing the extent of protrusion of the point of the indentor beyond the face of the pressure foot to be read. It shall be calibrated directly in terms of units ranging from 0 for
35、 the maximum protrusion of 2,50 mm 0,02 mm to 100 for zero protrusion obtained by placing the pressure foot and indentor in firm contact with a suitable flat, hard surface (e.g. glass). 4.1.4 Calibrated spring This is used to apply a force, F, expressed in millinewtons, to the indentor in accordance
36、 with one of the following equations: For type A durometers: F = 550 + 75HAwhere HAis the hardness reading taken from the type A durometer. For type D durometers: F = 445HDwhere HDis the hardness reading taken from the type D durometer. For type AO durometers: F = 550 + 75HAOwhere HAOis the hardness
37、 reading taken from the type AO durometer. BS ISO 7619-1:2010ISO 7619-1:2010(E) ISO 2010 All rights reserved 3Dimensions in millimetres Dimensions in millimetresaThe protrusion shown is valid for a reading of 0. aThe protrusion shown is valid for a reading of 0. Figure 1 Indentor for type A duromete
38、r Figure 2 Indentor for type D durometer Dimensions in millimetres Dimensions in millimetresaThe protrusion shown is valid for a reading of 0. aThe protrusion shown is valid for a reading of 0. Figure 3 Indentor for type AO durometerFigure 4 Indentor for type AM durometer4.1.5 Automatic timing devic
39、e (optional) The timer shall be automatically activated when the pressure foot is in contact with the test piece and shall indicate the end of the test time or lock the test value at its completion. Use of a timing device for the test time improves precision. When the instrument is used on a stand,
40、the time tolerance shall be 0,3 s. BS ISO 7619-1:2010ISO 7619-1:2010(E) 4 ISO 2010 All rights reserved4.2 Durometer type AM This durometer consists of the components specified in 4.2.1 to 4.2.5. 4.2.1 Pressure foot The pressure foot shall have a diameter of 9 mm 0,3 mm and a central hole of diameter
41、 1,19 mm 0,03 mm. 4.2.2 Indentor The indentor shall be formed from a hardened-steel rod of diameter 0,79 mm 0,025 mm to the shape and dimensions shown in Figure 4. 4.2.3 Indicating device This is a device for allowing the extent of protrusion of the point of the indentor beyond the face of the press
42、ure foot to be read. It shall be calibrated directly in terms of units ranging from 0 for the maximum protrusion of 1,25 mm 0,01 mm to 100 for zero protrusion obtained by placing the pressure foot and indentor in firm contact with a suitable flat, hard surface (e.g. glass). 4.2.4 Calibrated spring T
43、his is used to apply a force, F, expressed in millinewtons, to the indentor in accordance with the equation: F = 324 + 4,4HAMwhere HAMis the hardness reading taken from the type AM durometer. 4.2.5 Automatic timing device (optional) The timer shall be automatically activated when the pressure foot i
44、s in contact with the test piece and shall indicate the end of the test time or lock the test value at its completion. Use of a timing device for the test time improves precision. The time tolerance shall be 0,3 s. 4.3 Stand 4.3.1 Better precision is obtained by using a stand with a weight centred o
45、n the axis of the indentor to apply the pressure foot to the test piece. Durometer types A, D and AO may be used either as pocket meters by hand or mounted on a stand. Type AM durometers shall always be mounted on a stand. 4.3.2 The operating stand shall be capable of supporting the pressure-foot su
46、rface of the durometer parallel to the test piece support table. 4.3.3 The stand shall be capable of applying the test piece to the indentor, or vice versa, without shock. NOTE A maximum speed of 3,2 mm/s has been found to be suitable. 4.3.4 The total mass of the durometer and extra mass to overcome
47、 the spring force shall be: 0,101+kg for types A and AO; 0,505+kg for type D; 0,0500,25+kg for type AM. BS ISO 7619-1:2010ISO 7619-1:2010(E) ISO 2010 All rights reserved 54.4 Durometer spring force calibration The force values shall be in accordance with Table 1. Table 1 Durometer spring forces Spri
48、ng force mN Indicated durometer value Type AM Type A and AO Type D 0 324 550 10 368 1 300 4 450 20 412 2 050 8 900 30 456 2 800 13 350 40 500 3 550 17 800 50 544 4 300 22 250 60 588 5 050 26 700 70 632 5 800 31 150 80 676 6 550 35 600 90 720 7 300 40 050 100 764 8 050 44 500 Millinewtons (mN) per un
49、it 4,4 75 445 Spring force tolerance 8,8 37,5 222,5 NOTE For hand-held durometers, the tolerances may be increased; in particular, the spring force tolerance can be doubled. 5 Test pieces 5.1 General Test pieces shall be prepared in accordance with ISO 23529. 5.2 Thickness For the determination of hardness using type A, D and AO durometers, the thickness of the test piece shall be at least 6 mm. For the determination of hardness using type AM duro
