1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 4383:2012Plain bearings Multilayermaterials for thin-walled plainbearingsBS ISO 4383:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation o
2、f ISO 4383:2012. It supersedes BS ISO 4383:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MCE/12, Plain bearings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport t
3、o include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 73559 2 ICS 21.100.10 Compliance with a British Standard cannot confer immunity from legal obligation
4、s.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 4383:2012 ISO 2012Plain bearings Multilayer materials for thin-walled plain bearingsPaliers lisses Matriau
5、x multicouches pour paliers lisses mincesINTERNATIONAL STANDARDISO4383Fourth edition2012-10-15Reference numberISO 4383:2012(E)BS ISO 4383:2012ISO 4383:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publicati
6、on 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 the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Te
7、l. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 4383:2012ISO 4383:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Requirements 13.1 Chemical composition 13.2 Steel backings . 13.3 Beari
8、ng layers 13.4 Overlays . 23.5 Guidance on and selection of materials . 24 Designation 2Annex A (informative) Guidance on properties and selection of materials 5Bibliography 7BS ISO 4383:2012ISO 4383:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of
9、 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 established has the right to be represented on that committee. Int
10、ernational 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 th
11、e 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 circulated to the member bodies for voting. Publication as an International Standard requires approval by
12、 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 for identifying any or all such patent rights.ISO 4383 was prepared by Technical Committee ISO/TC
13、 123, Plain bearings, Subcommittee SC 2, Materials and lubricants, their properties, characteristics, test methods and testing conditions.This fourth edition cancels and replaces the third edition (ISO 4383:2000), which has been technically revised.iv ISO 2012 All rights reservedBS ISO 4383:2012INTE
14、RNATIONAL STANDARD ISO 4383:2012(E)Plain bearings Multilayer materials for thin-walled plain bearings1 ScopeThis International Standard specifies requirements for multilayer materials for the manufacture of thin-walled plain bearings (half bearings, bushes, thrust washers). The multilayer material c
15、onsists of a steel backing, the bearing layer (cast, sintered, roll bonded) and, possibly, an overlay. The chemical composition refers to the original unprocessed material and is intended to be measured on representative samples. Testing results on final bearings can be due to the influence of beari
16、ng production. Therefore, these results cannot be compared with data given in this International Standard.NOTE Environmental concerns will, in the future, restrict the use of some materials such as lead.2 Normative referencesThe following referenced documents are indispensable for the application of
17、 this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 4381, Plain bearings Tin casting alloys for multilayer plain bearingsISO 4382-1, Plain bearings Copper alloys Part 1: Cas
18、t copper alloys for solid and multilayer thick-walled plain bearingsISO 6691, Thermoplastic polymers for plain bearings Classification and designationISO 6280, Plain bearings Requirements on backings for thick-walled multilayer bearings3 Requirements3.1 Chemical compositionThe chemical composition o
19、f alloy elements shall be within the limits specified in Tables 1 to 5.3.2 Steel backingsThe chemical composition of the steel for backings shall be the subject of agreement between the manufacturer and purchaser. In general, low carbon steel is used.For bronze/polymer composite materials listed in
20、Table 4, copper-coated steel may be used. Backings shall conform to ISO 6280.3.3 Bearing layersBearing metals based on tin shall be in accordance with Table 1.Bearing metals based on copper shall be in accordance with Table 2.Bearing metals based on aluminium shall be in accordance with Table 3. ISO
21、 2012 All rights reserved 1BS ISO 4383:2012ISO 4383:2012(E)Bearing layers based on sintered porous bronze and polymers shall be in accordance with Table 4.NOTE There is a new class of aluminium-based materials containing both aluminium and silicon or manganese as well as a “soft” material, such as l
22、ead or tin. Detailed information is available from individual manufacturers.3.4 OverlaysOverlays in accordance with Table 5 may be applied for bearing metal layers as indicated in Table A.2. The thickness of the overlay and any additional layers between the bearing metal layer and the overlay shall
23、be the subject of agreement between the manufacturer and purchaser.Despite the electroplated overlays, sputtered and polymer overlays are used for engine bearings. For the chemical composition of sputtered overlays, see Table 6. Polymer overlays consist of a polymer matrix (e.g. PAI) and fillers. Th
24、e detailed compositions are defined in specific data sheets of the bearing manufacturers.3.5 Guidance on and selection of materialsGuidance of hardness for bearing metal in strip form and use of bearing metals are given in Annex A.4 DesignationEXAMPLE A multilayer material consisting of a steel back
25、ing, the bearing metal CuPb24Sn as cast (G) and the overlay PbSn10Cu2 is designated as follows: Bearing metal ISO 4383 - G CuPb24Sn PbSn10Cu2Table 1 Tin alloysaChemical elementChemical composition mass fraction, %SnSb8Cu4ComponentSn RemainderSb 7 to 8Cu 3 to 4ImpurityPb 22 CuPb10Sn10 70 HBW to 130 H
26、BW 60 HBW to 90 HBW 60 HBW to 140 HBWCuPb17Sn5 60 HBW to 95 HBW CuPb24Sn4 60 HBW to 90 HBW 45 HBW to 70 HBW 45 HBW to 120 HBWCuPb24Sn 55 HBW to 80 HBW 40 HBW to 60 HBW 40 HBW to 110 HBWCuPb30 30 HBW to 45 HBW AlSn20Cu 30 HBW to 40 HBW 45 HBW to 60 HBWAlSn6Cu 35 HBW to 45 HBW AlSn12SiCu 45 HV to 65 H
27、V AlSi11Cu 45 HBW to 60 HBW AlZn5Si1,5Cu1Pb1Mg 45 HBW to 70 HBW 70 HBW to 100 HBWNOTE Hardness values may be increased by skin-rolling; tests should be carried out according to ISO 4384-1.Table A.2 Guide of uses of bearing metals and for the hardness of the mating bearing part (shaft)Bearing alloy (
28、overlays)Characteristics and principal uses in high-speed enginesMinimum hardness of the shaftaSnSb8Cu4 Soft; good corrosion resistance; good performance under conditions of marginal lubrication; poor fatigue resist-ance; operates with hard or soft shafts. Lightly loaded main and connecting rod bear
29、ings; bushes; thrust washers.220 HBWCuPb10Sn10 Very high fatigue strength and shock resistance; good corrosion resistance; hard shaft desirable. Wrapped bushes, thrust washers; small end bushes.53 HRCCuPb17Sn5 Very high fatigue strength and shock resistance; hard shaft desirable; normally overlay pl
30、ated when used as a bearing. Highly loaded main and connecting rod bearings; wrapped bushes; thrust washers.50 HRCaThe tabulated hardness values for the shaft material are guide values of minimum hardness and are valid for use in high-speed machines. The working conditions, in particular the lubrica
31、tion conditions, may have a considerable influence so that a larger difference in hardness may be necessary between the bearing material and shaft material. ISO 2012 All rights reserved 5BS ISO 4383:2012ISO 4383:2012(E)Bearing alloy (overlays)Characteristics and principal uses in high-speed enginesM
32、inimum hardness of the shaftaCuPb24Sn4 High fatigue strength and shock resistance; suitable for high-speed shafts, oscillating or rotating motion; hard shaft desirable; normally overlay plated when used as a bearing. Wrapped bushes; thrust washers; main and connecting rod bearings.48 HRCCuPb24Sn Hig
33、h fatigue resistance with cast alloy; fair to high with sintered alloy; normally plated with an overlay when used in bearing applications and in this form may be operated with hard or soft shafts; susceptible to corro-sion by degraded oil when not overlay plated. Main and connecting rod bearings; th
34、rust washers.45 HRCCuPb30 Moderate fatigue resistance; susceptible to corrosion by degrated oil if not overlay plated; operates with hard shafts unless overlay plated. Main and connecting rod bearings; wrapped bushes.270 HBWAlSn20Cu Moderate fatigue strength; good corrosion resistance; relatively go
35、od performance in marginally lubricated conditions; may be operated with soft shafts. Main and connecting rod bearings; thrust washers and wrapped bushes.250 HBWAlSn6Cu Moderate to high fatigue strength; good corrosion resist-ance; normally plated with an overlay and used with hard shafts. Main and
36、connecting rod bearings and wrapped bushes.45 HRCAlSi11Cu High fatigue strength; normally used with plated over-lays in bearing applications; runs against hard shafts; good corrosion resistance. Main and connecting rod bearings.50 HRCAlSn12SiCu High fatigue strength; good seizure resistance and wear
37、 resistance; good corrosion resistance; operates with hard or soft shaft. Main and connecting rod bearings, thrust washers and wrapped bushes.230 HVAlZn5Si1,5Cu1Pb1Mg High fatigue strength; normally used with plated over-lays in bearing applications; operates with hard or soft shafts. Main and conne
38、cting rod bearings.45 HRCOverlay PbSn10Cu2 Fatigue strength depends on thickness; soft; good cor-rosion resistance; relatively good performance under conditions of marginal lubrication. Applied to main and connecting rod bearings manu-factured from copper/lead-based alloys and the higher strength al
39、uminium-based alloys. Applied to main and connecting rod bearings manufac-tured from cupper-based alloys.PbSb10 Pbln7 AlSn20Cu (sputter)aThe tabulated hardness values for the shaft material are guide values of minimum hardness and are valid for use in high-speed machines. The working conditions, in
40、particular the lubrication conditions, may have a considerable influence so that a larger difference in hardness may be necessary between the bearing material and shaft material.Table A.2 (continued)6 ISO 2012 All rights reservedBS ISO 4383:2012ISO 4383:2012(E)Bibliography1 ISO 4384-1, Plain bearing
41、s Hardness testing of bearing metals Part 1: Multilayer bearings materials ISO 2012 All rights reserved 7BS ISO 4383:2012ISO 4383:2012(E) ISO 2012 All rights reservedICS 21.100.10Price based on 7 pagesThis page deliberately left blankBSI is the independent national body responsible for preparing Bri
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