1、May 2015Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.1
2、00.10!%Bx“2315885www.din.deDDIN ISO 4381Plain bearings Tin casting alloys for multilayer plain bearings (ISO 4381:2011),English translation of DIN ISO 4381:2015-05Gleitlager Zinn-Gusslegierungen fr Verbundgleitlager (ISO 4381:2011),Englische bersetzung von DIN ISO 4381:2015-05Paliers lisses Alliages
3、 mouls base dtain pour paliers lisses multicouches (ISO 4381:2011),Traduction anglaise de DIN ISO 4381:2015-05SupersedesDIN ISO 4381:2001-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 8 pages04.15 A comma is used as the decimal mark
4、er. Contents Page DIN ISO 4381:2015-052National foreword .3 National Annex NA (informative) Bibliography .3 1 Scope .4 2 Normative references .4 3 Requirements 4 3.1 Chemical composition .4 3.2 Material properties .4 3.3 Selection of material 4 4 Designation .6 Annex A (informative) Guidance on use
5、of bearing metals and the hardness of the mating bearing part (shaft) .7 Bibliography 8 National foreword The text of this document (ISO 4381:2011) has been prepared by Technical Committee ISO/TC 123 “Plain bearings” (Secretariat: JISC, Japan), Subcommittee SC 2 “Materials and lubricants, their prop
6、erties, characteristics, test methods and testing conditions”. The responsible German body involved in its preparation was the DIN-Normenausschuss Wlz- und Gleitlager (DIN Standards Committee Rolling Bearings and Plain Bearings), Working Committee NA 118-02-02 AA Werkstoffe, Schmierung, Prfung. Atte
7、ntion is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follow
8、s: ISO 4384-2 DIN ISO 4384-2 ISO 4386-1 DIN ISO 4386-1 ISO 4386-2 DIN ISO 4386-2 ISO 4386-3 DIN ISO 4386-3 Amendments This standard differs from DIN ISO 4381:2001-02 as follows: a) lead casting alloys have been deleted; b) Annex A “Guidance on use of bearing metals and the hardness of the mating bea
9、ring part (shaft)” has been revised. Previous editions DIN ISO 4381: 1982-10, 1992-11, 2001-02 National Annex NA (informative) Bibliography DIN ISO 4384-2, Plain bearings Hardness testing of bearing metals Part 2: Solid materials DIN ISO 4386-1, Plain bearings Metallic multilayer plain bearings Part
10、 1: Non-destructive ultrasonic testing of bond DIN ISO 4386-2, Plain bearings Metallic multilayer plain bearings Part 2: Destructive testing of bond for bearing metal layer thicknesses 2 mm DIN ISO 4386-3, Plain bearings Metallic multilayer plain bearings Part 3: Non-destructive penetrant testing 3D
11、IN ISO 4381:2015-05Plain bearings Tin casting alloys for multilayer plain bearings1 ScopeThis International Standard specifies requirements for bearing metals based on tin casting alloys for multilayer plain bearings. The chemical composition and material properties refer to the original unprocessed
12、 material and are measured on representative samples. Testing results on final bearings can differ due to the influence of bearing production. Therefore, it is not intended that these results be compared with data given in this International Standard.2 Normative referencesThe following referenced do
13、cuments are indispensable for the application of 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 1143, Metallic materials Rotating bar bending fatigue testingISO 4384-2,
14、Plain bearings Hardness testing of bearing metals Part 2: Solid materialsISO 4386-2:1), Plain bearings Metallic multilayer plain bearings Part 2: Destructive testing of bond for bearing metal layer thicknesses greater than or equal to 2 mm3 Requirements3.1 Chemical compositionThe chemical compositio
15、n of alloy elements shall be within the limits specified in Table 1. The chemical analysis is decisive for the acceptance of the bearing metals.3.2 Material propertiesMaterial properties shall be in accordance with the data given in Table 1.All material property values are mean values or ranges and
16、are regarded as typical values for the designer. In view of the range of possible alloy compositions and the marked influence exerted by the cooling conditions on the mechanical properties, relatively large deviations from the indicated values are to be expected in individual cases.3.3 Selection of
17、materialGuidance on uses of bearing metals and on the hardness of the mating bearing part (shaft) is given in Annex A.1) Under preparation.4DIN ISO 4381:2015-05Table 1 Tin casting alloyChemical elementChemical composition, mass fraction%SnSb8Cu4Sn RemainderSb 7 to 8Cu 3 to 4ImpuritiesPb 0,35As 0,1 B
18、i 0,08Fe 0,1Al 0,01Zn 0,01Cd 0,05Total others 0,2Material propertiesBrinell hardnessin accordance with ISO 4384-2HBW 10/250/18020 C 22100 C 100,2 % tensile yield stress Rp 0,2N/mm220 C 46Tensile strength RmN/mm220 C 770,2 % compressive yield stress d 0,2N/mm220 C 47100 C 27Bond strength RChN/mm2In a
19、ccordance with ISO 4386-2: , 8.1 and 8.2.Rotating bar bending fatigueRrbfin accordance with ISO 114310 cycles, N/mm7 2 29Linear thermal expansion coefficient, l10 /K-623,9Melting temperatureC233 to 360Casting temperatureC440 to 460Density, kg/dm37,3N1) National footnote: Published in 2012. N1)5DIN I
20、SO 4381:2015-054 DesignationEXAMPLE A bearing metal having the chemical composition indicated by the symbol SnSb8Cu4 is designated as follows:Bearing metal ISO 4381 SnSb8Cu46DIN ISO 4381:2015-05Annex A (informative)Guidance on use of bearing metals and the hardness of the mating bearing part (shaft)
21、Bearing alloy Characteristics and principal usesMinimum hardness of the shaftaSnSb8Cu4Good sliding properties, conformability and high toughness; good embeddability; suitable for high sliding velocities in the hydrodynamic range, mean load; impact stress at low frequency; insensitive to reversed ben
22、ding stress.Used for high loaded rolling mill bearings; for the production of wrapped bushes, thin-walled bearing liners with a wall thickness of up to about 3 mm and thrust washers.160 HBaIn multilayer plain bearings, the difference between the hardness of the bearing material and the shaft materia
23、l should be such that welding under working conditions is safely avoided. The working conditions, in particular the lubrication conditions, have considerable influence on the selection of the shaft material. For this reason, the recommended hardness value for the shaft material is a minimum value. I
24、n general, unquenched and untempered shaft materials are used in the case of bearing materials based on tin.DIN ISO 4381:2015-057DIN ISO 4381:2015-05Bibliography1 ISO 4386-1, Plain bearings Metallic multilayer plain bearings Part 1: Non-destructrive ultrasonic testing of bond2 ISO 4386-3, Plain bearings Metallic multilayer plain bearings Part 3: Non-destructive penetrant testing8DIN ISO 4381:2015-05
