《BS-ISO-4925-2005.pdf》由会员分享，可在线阅读，更多相关《BS-ISO-4925-2005.pdf（34页珍藏版）》请在三一文库上搜索。
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3、2:1985 which is withdrawn.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
10、 emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh computfrep reormign tide ehtin.g In wodlnidaot gnhis file, trapise atpecc tiereht nser ehnopsiiblit
11、y fo not infriigngn Aebods licensilop gnic.y ehT ISO tneClar Secrteiraat caceptl on siibality in this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo teh softwacudorp erts sut deo crtaee this PDF file cna f ebi dnuon tlareneG eh Info leratit evo the file; tP ehDc-Frtaeion marapt
12、erew setpo erimizde for irpnti.gn Evyre caer neeb sah taken to sneeru that the file is suitlbae fosu re yb ISO memdob rebeis. In tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 5002 All irthgs erse.devr lnUeto sswrehise
13、 specified, on trap fo this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fof
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
25、 for identifying any or all such patent rights. ISO 4925 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 2, Braking systems and equipment. This second edition cancels and replaces the first edition (ISO 4925:1978), which has been technically revised. 5002:5294 CEI SB BS
26、 ISO 4925:2005 4 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:5294 O5002(E) I SO 5002 All irthgs ersedevr v Introduction The specifications for fluids given in this International Standard incorporate a range of performance standards in
27、 use throughout the world at the time of publication. The classes include fluids technically equivalent to those designated DOT 3, DOT 4 and DOT 5.1. The major use of these fluids is in the hydraulic brake and clutch systems of road vehicles, but they can also be used in any suitable hydraulic syste
28、m. 5002:5294 CEI SB BS ISO 4925:2005 5 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:5294 O5002(E) I
29、SO 2005 All rights reserved 1 Road vehicles Specification of non-petroleum-base brake fluids for hydraulic systems 1 Scope This International Standard gives the specifications requirements and test methods for non-petroleum-base fluids used in road-vehicle hydraulic brake and clutch systems that are
30、 designed for use with such fluids and equipped with seals, cups or double-lipped type gland seals made of styrene-butadiene rubber (SBR) and ethylene-propylene elastomer (EPDM). 2 Normative references The following referenced documents are indispensable for the application of this document. For dat
31、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37:1994, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 48:1994, Rubber, vulcanized or thermoplastic
32、 Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 812:1991, Rubber, vulcanized Determination of low-temperature brittleness ISO 815:1991, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low temperatures ISO 3104:1994, Petroleum produc
33、ts Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity ISO 4926:1978, Road vehicle Hydraulic brake systems Non petroleum base reference fluids ASTM D 91, Standard test method for precipitation number of lubricating oils ASTM E 298, Standard test m
34、ethods for assay of organic peroxides ASTM D 395, Standard test methods for rubber property Compression set ASTM D 412, Standard test methods for vulcanized rubber and thermoplastic elastomers Tension ASTM D 664, Standard test method for acid number of petroleum products by potentiometric titration
35、ASTM D 746, Standard test method for brittleness temperature of plastics and elastomers by impact ASTM D 865, Test method for rubber Deterioration by heating in air (test tube enclosure) ASTM D 1120, Standard test method for boiling point of engine coolants ASTM D 1123, Standard test method for wate
36、r in engine coolant concentrate by the Fisher reagent method BS IEC 4925:2005 BS ISO 4925:2005 7 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4925:2005(E) 2 ISO 2005 All rights reserved ASTM D 1209, Standard test method for colour o
37、f clear liquids (platinum-cobalt scale) ASTM D 1364, Standard test method for water in volatile solvents (Karl Fischer reagent titration method) ASTM D 1415, Standard test method for rubber property International hardness ASTM D 1613, Standard test method for acidity in volatile solvents and chemica
38、l intermediates used in paint, varnish, lacquer and related products ASTM D 3182, Standard practice for rubber Materials, equipment and procedures for mixing standard compounds and preparing standard vulcanized sheets SAE J 1703, Motor vehicle brake fluid 3 Materials On visual inspection, the fluid
39、shall be clear and free of suspended matter, dirt and sediment. The quality of the materials used shall be such that the resulting product conforms to the requirements of this International Standard and that uniformity of performance is ensured. Fluids may be dyed, provided no confusion is possible
40、between them and other types of fluids. 4 Specifications The product shall meet the requirements for the appropriate class in accordance with Table 1, using the test methods according to Clause 5. NOTE It is intended that a stroking test be added to a future revision of this International Standard.
41、Table 1 Brake fluid specifications Tests and requirements Requirement(s) Test method (subclause) Test description Unit Class 3 Class 4 Class 5-1 Class 6 5.1 Viscosity at 40 C mm2/su 1 500 u 900 u 750 at 100 C mm2/sW 1,5 5.2 Equilibrium reflux boiling point (ERBP) C W 205W 230 W 260 W 250 5.2.6 Wet E
42、RBP C W 140W 155 W 180 W 165 5.3 pH 7 to 11,5 5.4 Fluid stability 5.4.1 High-temperature stability C 5 C 5.4.2 Chemical stability C 5 C BS IEC 4925:2005 BS ISO 4925:2005 8 2 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:5294 O5002(E) IS
43、O 2005 All rights reserved 3 Table 1 Brake fluid specifications Tests and requirements (continued) Requirement(s) Test method (subclause) Test description Unit Class 3 Class 4 Class 5-1 Class 6 5.5 Corrosion Metal strip characteristics after testing Mass change Tinned iron mg/cm2 0,2 to 0,2 Steel mg
44、/cm2 0,2 to 0,2 Aluminium mg/cm2 0,1 to 0,1 Cast iron mg/cm2 0,2 to 0,2 Brass mg/cm2 0,4 to 0,4 Copper mg/cm2 0,4 to 0,4 Aspect No pitting or roughness outside contact area Staining/discoloration Permitted Liquid characteristics after testing Aspect No gel, none adhering crystals pH 7 to 11,5 Sedime
45、nt % vol.u 0,1 Rubber cup characteristics after testing Blisters or carbon black separation at surface None Hardness decrease IRHD u 15 Base diameter increase mm u 1,4 Volume increase % u 16 5.6 Fluidity and appearance at low temperatures 5.6.1 at 40 C for 144 h Aspect Clear and homogeneous Bubble f
46、low time s u 10 Sediments Absence 5.6.2 at 50 C for 6 h Aspect Clear and homogeneous Bubble flow time s u 35 Sediments Absence BS IEC 4925:2005 BS ISO 4925:2005 9 3 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 14:19:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS:5294 O5002(E) 4 ISO 2005
47、All rights reserved Table 1 Brake fluid specifications Tests and requirements (continued) Requirement(s) Test method (subclause) Test description Unit Class 3 Class 4 Class 5-1 Class 6 5.7 Water tolerance 5.7.1 at 40 C for 22 h Aspect Clear and homogeneous Bubble flow time s u 10 Sediments Absence 5
48、.7.2 at 60 C for 22 h Aspect Clear and homogeneous Sediments % vol.u 0,05 5.8 Compatibility/miscibility with ISO 4926 fluid 5.8.1 at 40 C for 22 h Aspect Clear and homogeneous Sediments Absence 5.8.2 at 60 C for 22 h Aspect Clear and homogeneous Sediments % vol.u 0,05 5.9 Resistance to oxidation Met
49、al strip aspect No pitting or roughness no more than a trace of gum Staining/discoloration Permitted Mass change of aluminium strip mg/cm2 0,05 to + 0,05 Mass change of cast iron strip mg/cm2 0,3 to + 0,3 5.10 Effect on rubber 5.10.2.1 Styrene Butadiene Rubber (SBR) at 120 C Cup diameter increase mm 0,15 to 1,4 Hardn