1、BS ISO 11424:2017Rubber hoses and tubing forair and vacuum systems forinternal-combustion engines SpecificationBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 11424:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 114
2、24:2017. It supersedes BS ISO 11424:1996 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this committee can be obtained on request to its secretary.Thi
3、s publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 89077 2 ICS 27.020; 83.140.30; 83.140.40Compliance with a British Stan
4、dard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 11424:2017 ISO 2017Rubber hoses and tubing for a
5、ir and vacuum systems for internal-combustion engines SpecificationTuyaux et tubes en caoutchouc pour systmes daration et vide des moteurs combustion interne SpcificationsINTERNATIONAL STANDARDISO11424Second edition2017-02Reference numberISO 11424:2017(E)BS ISO 11424:2017ISO 11424:2017(E)ii ISO 2017
6、 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the int
7、ernet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copy
8、rightiso.orgwww.iso.orgBS ISO 11424:2017ISO 11424:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms, definitions and abbreviated terms 24 Classification 24.1 Types 24.2 Classes 25 Hose and tubing bores 36 Dimensions and tolerances . 36.1 Hoses . 36.2 Tubing . 37 Requirements for physical
9、properties . 47.1 Rubber compounds . 47.1.1 Selection of test pieces 47.1.2 Hardness . 47.1.3 Tensile strength and elongation at break . 47.1.4 Change in properties after heat-ageing 47.1.5 Compression set . 57.1.6 Resistance to oxygenated fuels 57.1.7 Resistance to oil No.3 . 57.2 Hose and tubing .
10、 57.2.1 Proof pressure 57.2.2 Minimum burst pressure 67.2.3 Adhesion . 67.2.4 Ozone resistance 67.2.5 Low-temperature flexibility after heat-ageing . 67.2.6 Amount of extractable products . 67.2.7 Tear resistance . 67.2.8 Suction resistance (only for Type A). 67.2.9 Resistance to kinking . 78 Freque
11、ncy of testing 79 Marking 710 Recommendations for packaging and storage 7Annex A (normative) Type and routine tests 10Annex B (informative) Recommended production tests 11Bibliography .12 ISO 2017 All rights reserved iiiContents PageBS ISO 11424:2017ISO 11424:2017(E)ForewordISO (the International Or
12、ganization 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 technical committee has been establ
13、ished 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 matters of electrotechnical standardizati
14、on.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with
15、the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).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. Details of any
16、patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsemen
17、t.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .htmlT
18、his document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Hoses (rubber and plastics).This second edition cancels and replaces the first edition (ISO 11424:1996), which has been technically revised.The main changes are the following: in 6.2, inside di
19、ameter (ID) for each nominal bore has been included; requirement on frequency of testing has been added in Clause 8; requirement to mark nominal bore of the hose or tubing has been added in Clause 9; recommendations for packaging and storage have been added in Clause 10; Annex A and Annex B have bee
20、n added.iv ISO 2017 All rights reservedBS ISO 11424:2017INTERNATIONAL STANDARD ISO 11424:2017(E)Rubber hoses and tubing for air and vacuum systems for internal-combustion engines Specification1 ScopeThis document specifies requirements for rubber hoses and tubing for use in the various air and vacuu
21、m systems found on internal combustion engines. This document does not cover hoses used for direct power-brake actuation in trucks and trailers, nor for air intakes and ducting within the passenger compartment. The highest-temperature hoses are generally used for turbocharger applications. All hoses
22、 and tubing remain serviceable down to 40C.NOTE Although the term vacuum is generally used, in reality the application is one of reduced air pressure used for the purposes of actuation or monitoring of the various engine-system components. The air carried by the tubing or hoses may be clean and free
23、 of contaminants but may also contain oil, fuel and their vapours as contamination, due to the particular installation and application.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document.
24、For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 37:2011, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain propertiesISO 48, Rubber, vulcanized or thermoplastic
25、 Determination of hardness (hardness between 10 IRHD and 100 IRHD)ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance testsISO 815-1:2014, Rubber, vulcanized or thermoplastic Determination of compression set Part 1: At ambient or elevated temperaturesISO 1402, Rubber
26、and plastics hoses and hose assemblies Hydrostatic testingISO 1629, Rubber and latices NomenclatureISO 1817:2015, Rubber, vulcanized or thermoplastic Determination of the effect of liquidsISO 3302-1, Rubber Tolerances for products Part 1: Dimensional tolerancesISO 4671, Rubber and plastics hoses and
27、 hose assemblies Methods of measurement of the dimensions of hoses and the lengths of hose assembliesISO 7233:2016, Rubber and plastics hoses and hose assemblies Determination of resistance to vacuumISO 7326, Rubber and plastics hoses Assessment of ozone resistance under static conditionsISO 8033, R
28、ubber and plastics hoses Determination of adhesion between componentsISO 8330, Rubber and plastics hoses and hose assemblies VocabularyISO 10619-1:2011, Rubber and plastics hoses and tubing Measurement of flexibility and stiffness Part 1: Bending tests at ambient temperatureISO 10619-2:2011, Rubber
29、and plastics hoses and tubing Measurement of flexibility and stiffness Part 2: Bending tests at sub-ambient temperatures ISO 2017 All rights reserved 1BS ISO 11424:2017ISO 11424:2017(E)ISO 19013-1:2005, Rubber hoses and tubing for fuel circuits for internal combustion engines Specification Part 1: D
30、iesel fuels3 Terms, definitions and abbreviated termsFor the purposes of this document, the terms and definitions given in ISO 8330 and the abbreviated terms given in ISO 1629 apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia:
31、 available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp4 Classification4.1 TypesType A internally reinforced hose with a working pressure up to 0,3 MPa (3 bar).Type B homogeneous tube with a working pressure up to 0,12 MPa (1,2 bar).4
32、.2 ClassesClass 1 Long-term working temperature up to 70 C; maximum working temperature up to 100 C. Not recommended for applications where resistance to oils, fuel and their vapours is required.NOTE 1 Typically, styrene-butadiene rubber (SBR) can be used.Class 2 Long-term working temperature up to
33、100 C; maximum working temperature up to 125 C. Resistant to oils and their vapours.NOTE 2 Typically, chloroprene rubber (CR) can be used.Class 3 Long-term working temperature up to 100 C, maximum working temperature up to 125 C. Resistant to oils, fuels and their vapours.NOTE 3 Typically, acrylonit
34、rile-butadiene rubber (NBR) can be used.Class 4 Long-term working temperature up to 125 C, maximum working temperature up to 150 C. Not recommended for applications where resistance to oils, fuels and their vapours is required.NOTE 4 Typically, ethylene-propylene rubber (EPM or EPDM) can be used.Cla
35、ss 5 Long-term working temperature up to 125 C, maximum working temperature up to 150 C. Resistant to oils and their vapours.NOTE 5 Typically, chlorinated or chlorosulfonated polyethylene (CM or CSM) can be used.Class 6 Long-term working temperature up to 125 C, maximum working temperature up to 150
36、 C. Resistant to oils, fuels and their vapours.NOTE 6 Typically, epichlorohydrin or hydrogenated nitrile rubbers (CO, ECO or HNBR) can be used.Class 7 Long-term working temperature up to 150 C, maximum working temperature up to 175 C. Not recommended for applications where resistance to oils, fuels
37、and their vapours is required.NOTE 7 Typically, silicone rubber (VMQ) can be used.2 ISO 2017 All rights reservedBS ISO 11424:2017ISO 11424:2017(E)Class 8 Long-term working temperature up to 150 C, maximum working temperature up to 175 C. Resistant to oils and their vapours.NOTE 8 Typically, acrylic
38、rubber (ACM or AEM) can be used.Class 9 Long-term working temperature up to 150 C, maximum working temperature up to 175 C. Resistant to oils, fuels and their vapours.NOTE 9 Typically, fluoroelastomer or fluorosilicone rubbers (FKM or FVMQ) can be used.Class 10 Long-term working temperature up to 17
39、5 C, maximum working temperature up to 200 C. Resistant to oils and their vapours.NOTE 10 Typically, fluoroelastomer or fluorosilicone rubbers (FKM or FVMQ) can be used.Hoses are thus designated with a two-character descriptor such as type A4 or type B6, etc.In cases where type A hose cover and lini
40、ng are manufactured from materials of different classes, a three character descriptor shall be used thus: Type A9/5 where the second character describes the lining material and the third character describes the cover material.Similarly, where type B tubing is of a composite construction, a three-cha
41、racter descriptor is also used thus: Type B3/2.5 Hose and tubing boresThe bore of all hoses and tubing shall be clean and free from any contamination when examined visually.6 Dimensions and tolerances6.1 HosesWhen determined by the methods described in ISO 4671, the dimensions and tolerances shall c
42、omply with the values given in Table 1.6.2 TubingWhen determined by the methods described in ISO 4671, bore diameters and wall thicknesses shall be as given in Table 2. Tolerances shall be selected from the appropriate categories given in ISO 3302-1.Table 1 Hose dimensions and tolerancesNominal bore
43、Inside diameter (ID)mmTolerance on IDmmWall thicknessmmOutside diameter (OD)mmTolerance on ODmm3,5 3,50,33,0 9,50,44 4,0 3,0 10,05 5,0 3,0 11,06 6,0 3,0 12,07 7,0 3,0 13,07, 5 7, 5 3,0 13,58 8,0 3,0 14,09 9,0 3,0 15,011 11,0 3,5 18,012 12,0 3,5 19,0 ISO 2017 All rights reserved 3BS ISO 11424:2017ISO
44、 11424:2017(E)Table 2 Nominal bore diameters and wall thickness of tubingNominal boreNominal wall thickness mm2 22,5 34 3,55 47 to 13 4,57 Requirements for physical properties7.1 Rubber compounds7.1.1 Selection of test piecesTests shall be carried out where possible on test pieces cut from finished
45、products. Where this is not possible, test pieces shall be cut from standard test slabs with a state of cure equivalent to that of the finished product. Compression set determination shall always be carried out on standard test slabs for both cover and lining of hoses and on the compound used for th
46、e tubing.7.1.2 HardnessHardness, determined in accordance with the procedure in ISO 48, shall comply with the values given in Table 3.7.1.3 Tensile strength and elongation at breakTensile strength and elongation at break, determined in accordance with ISO 37:2011 using a Type 2 dumb-bell test piece,
47、 shall comply with the values given in Table 3.7.1.4 Change in properties after heat-ageingThe change in hardness, tensile strength and elongation at break, after heat-ageing in accordance with ISO 188 in a ventilated drying oven under the conditions given in a) and b) below, using test pieces as de
48、scribed in 7.1.2 and 7.1.3, shall comply with the values given in Table 3. Class 1:a) ()7002+h at 100 Cb) 1 000 h 5 h at 70 C Classes 2 and 3:a) ()7002+h at 125 Cb) 1 000 h 5 h at 100 C Classes 4, 5 and 6:a) ()7002+h at 150 Cb) 1 000 h 5 h at 125 C Classes 7, 8 and 9:4 ISO 2017 All rights reservedBS
49、 ISO 11424:2017ISO 11424:2017(E)a) ()7002+h at 175 Cb) 1 000 h 5 h at 150 C Class 10:a) ()7002+h at 200 Cb) 1 000 h 5 h at 175 C7.1.5 Compression setCompression set, when determined in accordance with ISO 815-1:2014, using the Type A test piece and the following conditions, shall comply with the values given in Table 3. Class 1: ()7002+h at 70 C Classes 2 and 3: ()7002+h at 100 C Classes 4, 5 and 6: ()7002+h at 1
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