BS-ISO-4925-2005.pdf
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1、BRITISH STANDARD BS ISO 4925:2005 Incorporating Corrigendum No. 1 Road vehicles Specification of non-petroleum-base brake fluids for hydraulic systems ICS 43.040.40; 75.120 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4925:2005 T
2、his British Standard was published under the authority of the Standards Policy and Strategy Committee on 1 March 2005 BSI 15 March 2005 ISBN 0 580 45557 2 National foreword This British Standard reproduces verbatim ISO 4925:2005 and implements it as the UK national standard. It supersedes BS AU 174-
3、2:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/69, Components and fluids for vehicle braking systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross
4、-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Stand
5、ards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the
6、responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside fron
7、t cover, the ISO title page, pages ii to v, a blank page, pages 1 to 25 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 15630 Corrigendum No. 1 15 March 2005Correction to supe
8、rsession Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 4925:2005(E) OSI 5002 INTERNATIONAL STANDARD ISO 4925 Second edition 2005-02-01 Road vehicles Specification of non-petroleum-base brake fluids for hydraulic system
9、s Vhicules routiers Spcifications pour liquides de frein base non ptrolire pour systmes hydrauliques 5002:5294 CEI SBBS ISO 4925:2005 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:5294 O5002(E) DPlcsid Fremia ihTs PDF file may ctnoian
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14、ice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Published in Switzerland ii ISO 5002 Allr ithgsr esedevr BS5002:5294 CEI BS ISO 4925:2005 2 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, U
15、ncontrolled Copy, (c) BSI ISO 4925:2005(E) I SO 5002 All irthgs ersedevr iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Materials.2 4 Specifications2 5 Test methods.5 5.1 Viscosity.5 5.1.1 General.5 5.1.2 Repeatability (single analyst).5 5.1.3 Reproducibility (multi
16、-laboratory).5 5.2 Equilibrium reflux boiling point (ERBP) .5 5.2.1 General.5 5.2.2 Preparation of apparatus5 5.2.3 Test procedure 6 5.2.4 Repeatability (single analyst).6 5.2.5 Reproducibility (multi-laboratory).6 5.2.6 Wet ERBP test .6 5.3 pH9 5.4 Fluid stability.9 5.4.1 High-temperature stability
17、9 5.4.2 Chemical stability10 5.5 Corrosion.10 5.5.1 Metal strip characteristics prior to testing.10 5.5.2 Preparation of joints .10 5.5.3 Test procedure 11 5.6 Fluidity and appearance at low temperatures11 5.6.1 At 40 C for 144 h .11 5.6.2 At 50 C for 6 h .12 5.7 Water tolerance .12 5.7.1 At 40 C fo
18、r 22 h .12 5.7.2 At 60 C for 22 h 12 5.8 Compatibility/miscibility with ISO 4926 fluid12 5.8.1 At 40 C for 22 h .12 5.8.2 At 60 C for 22 h 12 5.9 Resistance to oxidation12 5.10 Effect on rubber 13 5.10.1 General.13 5.10.2 Test procedures 13 5.10.3 Repeatability (single analyst).14 5.10.4 Reproducibi
19、lity (multi-laboratory).14 Annex A (normative) ISO Styrene-butadiene rubber (SBR) brake cups for testing brake fluid.15 Annex B (normative) Corrosion test strips18 Annex C (normative) Corrosion strip assembly19 Annex D (normative) Standard ethylene, propylene and diene (EPDM) terpolymer rubber slabs
20、tock20 Annex E (normative) Triethylene glycol monomethyl ether (TEGME) brake fluid grade22 Bibliography .25 BS IEC 4925:2005 BS ISO 4925:2005 3 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:5294 O5002(E) iv I SO 5002 All irthgs ersedevr
21、 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 which a
22、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 matter
23、s 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 Standards. Draft International Standards adopted by the technical committees are circulat
24、ed 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 document may be the subject of patent rights. ISO shall not be held responsible
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