1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22953-5 SANS 7619-1:2009Edition 1 and ISO amdt 1ISO 7619-1:2004Edition 1 and amdt 1SOUTH AFRICAN NATIONAL STANDARD Rubber, vulcanized or t
4、hermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness) This national standard is the identical implementation of ISO 7619-1:2004 and ISO amendment 1, and is adopted with the permission of the International Organization for Standardization. Published by SABS Stan
5、dards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 7619-1:2009 Edition 1 and ISO amdt 1 ISO 7619-1:2004 Edition 1 and amdt 1 Table of changes Change No. Date Scope ISO amdt 1 2008 Amended to update referenced s
6、tandards, to insert a clause on precision, and to insert an annex on precision for type AM durometer. National foreword This South African standard was approved by National Committee SABS TC 45, Rubber and rubber products, in accordance with procedures of the SABS Standards Division, in compliance w
7、ith annex 3 of the WTO/TBT agreement. This SANS document was published in November 2009. Reference numberISO 7619-1:2004/Amd.1:2008(E)ISO 2008INTERNATIONAL STANDARD ISO7619-1First edition2004-05-15AMENDMENT 12008-08-01Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1:
8、Durometer method (Shore hardness) AMENDMENT 1: Precision data Caoutchouc vulcanis ou thermoplastique Dtermination de la duret par pntration Partie 1: Mthode au duromtre (duret Shore) AMENDEMENT 1: Donnes de fidlit SANS 7619-1:2009This s tandard may only be used and printed by approved subscription a
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13、thout permission in writing from either ISO at the address below or ISOs member body in the country of the 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 2008 All r
14、ights reservedSANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 7619-1:2004/Amd.1:2008(E) ISO 2008 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of nationa
15、l 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 committee has been established has the right to be represented on that committee. Internation
16、al 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 electrotechnical standardization. International Standards are drafted in accordance with the rules
17、 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 member bodies for voting. Publication as an International Standard requires approval by at le
18、ast 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 identifying any or all such patent rights. Amendment 1 to ISO 7619-1:2004 was prepared by Technica
19、l Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This amendment concerns the addition of a precision statement in ISO 7619-1:2004. SANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS
20、 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 7619-1:2004/Amd.1:2008(E) ISO 2008 All rights reserved 1Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness) AMENDM
21、ENT 1: Precision data Page 1, Clause 2 Replace the existing normative reference with the following. ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods Page 6, 8.1, Note Replace the existing note with the following. “NOTE For further information
22、on calibration of hardness meters and durometers, see ISO 18898.” Page 6 Insert the following new Clause 9 immediately after 8.2. 9 Precision 9.1 Interlaboratory test An interlaboratory test program (ITP) for precision evaluation for micro hardness tests was conducted in 2004 using the precision pro
23、cedures and guidelines as described in the subsequently published ISO/TR 9272:2005. See Tables A.1 and A.2 for precision results. Precision for Type AM durometer hardness measurement was evaluated. Although Micro IRHD testing is not specified in this test method, the precision for Micro Internationa
24、l Rubber Hardness Degrees (IRHD) was evaluated as a supplementary method for purposes of comparison. ISO 48 also has an additional set of precision results for IRHD.1)1) This is to ensure that optimal use is made of the results on IRHD from the ITP for ISO 7619-1, given that these results might othe
25、rwise be discarded. Having precision in both locations (ISO 7619-1 and ISO 48) for IRHD expands the precision knowledge base for IRHD and provides more precision information on this method. SANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients o
26、f the SABS .ISO 7619-1:2004/Amd.1:2008(E) 2 ISO 2008 All rights reserved9.2 Precision results The precision results for Type AM durometer measurement are given in Table A.1 with the materials listed in increasing hardness order. These results were obtained using the outlier replacement procedures as
27、 described in ISO/TR 9272:2005. General statements for the use of the precision results are cited below. These are given in terms of both absolute precision, r and R, and relative precision (r) and (R). 9.3 Repeatability The repeatability, or local domain precision, for each of the hardness test met
28、hods was established for each material by the values found in Table A.1. Two individual test results (obtained by the proper use of this part of ISO 7619) that differ by more than the tabulated values for r (in measurement units) and (r) (in percent) shall be considered as suspect, i.e. as having co
29、me from different populations. Such a decision suggests that some appropriate investigative action be taken. 9.4 Reproducibility The reproducibility, or global domain precision, for Type AM durometer hardness test method was established for each material by the values found in Table A.1. Two individ
30、ual test results obtained in different laboratories (by the proper use of this part of ISO 7619) that differ by more than the tabulated values for R (in measurement units) and (R) (in percent) shall be considered as suspect, i.e. as having come from different populations. Such a decision suggests th
31、at some appropriate investigative action be taken. Page 6 Renumber the existing Clause 9 as Clause 10. Page 7 Insert the following new Annex A between the newly numbered Clause 10 and the Bibliography. SANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemaili
32、ng clients of the SABS .ISO 7619-1:2004/Amd.1:2008(E) ISO 2008 All rights reserved 3Annex A (informative) Precision for Type AM durometer compared to Micro IRHD A.1 A Type 1 precision was evaluated (for both tests) using cured test pieces prepared from four (4) different rubber compounds A, B, C and
33、 D (with a range of hardness values) supplied to each of the six (6) participating laboratories in the ITP. On each of two (2) test days, two weeks apart, the following test sequence was carried out. Three (3) test pieces for each compound were furnished and a median of five (5) hardness measurement
34、s on each of the three test pieces was obtained for each of two operators. For each operator, a median value was selected for the three test pieces. The two median values were then averaged to obtain a single value designated as a test result for that test day. Shore A measurements were made on one
35、side of the test piece and IRHD measurements were made on the reverse side. The precision analysis was based on test result data, i.e. two (2) test result values per laboratory. The ISO/TR 9272:2005 Option 2 outlier treatment procedure, outlier replacement, was adopted since the ITP has a minimum nu
36、mber (6) of participating laboratories. This Option 2 procedure replaces each outlier declared as significant, with a value that is consistent with the data value distribution for the non-outlier data for that material. See ISO/TR 9272:2005 for a rationale for this concept and for other details. The
37、 precision results as determined by this ITP may not be applied to acceptance or rejection testing for any group of materials or products without documentation that the results of this precision evaluation actually apply to the products or materials tested. A.2 The precision for Micro IRHD testing i
38、s found in Table A.2, with the materials listed in increasing hardness order. These results were obtained using the outlier replacement procedures as described in ISO/TR 9272:2005, as cited above. These are given in terms of both the absolute precision, r or R, and also for relative precision (r) an
39、d (R). The statements as given above for repeatability and reproducibility for type AM durometer may be used for any application to Micro IRHD testing, using Table A.2 for the precision parameters. A.3 The results of the precision analysis in Tables A.1 and A.2 indicate that there is no pronounced t
40、rend for r or R versus hardness level over the 46 to 74 range. The repeatability parameters for Type AM durometer r = 0,88, (r) = 1,47 and for Micro IRHD r = 1,14, (r) = 2,04 are reasonably similar. However, the reproducibility for the two hardness measurement methods is substantially different: for
41、 Shore A, R = 5,08, (R) = 8,98, and for IRHD, R = 2,20, (R) = 3,85. The reproducibility parameters R and (R) for IRHD are 43 % of the value(s) for Shore A, indicating much better between laboratory agreement for the IRHD measurements. A.4 Bias is the difference between a measured average test result
42、 and a reference or true value for the measurement in question. Reference values do not exist for this test method and therefore bias cannot be evaluated. SANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 7619-1:2004/Amd.1:2
43、008(E) 4 ISO 2008 All rights reservedTable A.1 Precision for ISO 7619-1, Hardness Type AM durometer Within laboratory Between laboratory Standard deviation Repeatability (absolute) Repeatability (relative) Standard deviationReproducibility (absolute) Reproducibility (relative) Material Mean level sr
44、ar a(r) bsRcR a(R) bNumber of laboratoriesdB (2) 47,9 0,276 0,772 1,61 2,32 6,5 13,57 6 C (3) 55,2 0,223 0,623 1,13 1,85 5,17 9,35 6 (1) A (1) 62,8 0,404 1,13 1,8 1,95 5,45 8,68 6 D (4) 73,9 0,357 1 1,35 1,14 3,2 4,33 6 (1) Group average 0,881 25 1,472 5 5,08 8,982 5 NOTE See Clause 9 for discussion
45、 of precision results of this table. aIn measurement units. bIn percent of mean level. cFor total between laboratory variation, in measurement units. dNumber of Option 2 outlier laboratory replacement values listed in parentheses (). Table A.2 Precision for ISO 48, Hardness - Micro IRHD Within labor
46、atory Between laboratory Standard deviation Repeatability (absolute) Repeatability (relative) Standard deviationReproducibility (absolute) Reproducibility (relative) Material Mean level srar a(r) bsRcR a(R) bNumber of laboratoriesdB (2) 45,6 0,404 1,13 2,48 0,954 2,67 5,85 6 C (3) 53,9 0,469 1,31 2,
47、43 0,583 1,63 3,03 6 (1) A (1) 63,7 0,605 1,7 2,66 0,728 2,04 3,2 6 D (4) 74 0,149 0,416 0,57 0,875 2,45 3,31 6 (1) Group average 1,139 2,035 2,197 5 3,847 5 NOTE See Clause 9 for discussion of precision results of this table. aIn measurement units. bIn percent of mean level. cFor total between labo
48、ratory variation, in measurement units. dNumber of Option 2 outlier laboratory replacement values listed in parentheses (). Page 8, Bibliography Delete the footnote (“Under preparation”) from bibliographical Reference 4. Add the following to the list of bibliographical references. 8 ISO/TR 9272:2005
49、, Rubber and rubber products Determination of precision for test method standardsSANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 7619-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 7619-1:2004/Amd.1:2008(E) ICS 83.060 Price based on 4 pages ISO 2008 All rights reserved SANS 7619-1:2009This s tandard may only be used and printed by approved subscription
