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1、Reference number ISO 5755:2001(E) ISO 2001 INTERNATIONAL STANDARD ISO 5755 Second edition 2001-04-15 Sintered metal materials Specifications Matriaux mtalliques fritts Spcifications ISO 5755:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing poli
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4、o ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
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6、1 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved ISO 5755:2001(E) ISO 2001 All rights reservediii ContentsPage Foreword.iv 1Scope 1 2Normative references1 3Sampling.1 4Test methods for normative properties.2 4.1General2 4.2Chemical
7、analysis2 4.3Open porosity.2 4.4Radial crushing strength 2 4.5Tensile strength.2 4.6Tensile yield strength2 4.7Mechanical properties.2 5Specifications.3 6Designations 3 Annex A (normative) Designation system15 Annex B (informative) Microstructures.17 Bibliography19 ISO 5755:2001(E) iv ISO 2001 All r
8、ights reserved 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 subjec
9、t for which a 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)
10、 on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internati
11、onal 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 International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. I
12、nternational Standard ISO 5755 was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 5, Specifications for powder metallurgical materials (excluding hardmetals). This second edition cancels and replaces the first edition (ISO 5755:1996), which has been technically revise
13、d. Annex A forms a normative part of this International Standard. Annex B is for information only. INTERNATIONAL STANDARDISO 5755:2001(E) ISO 2001 All rights reserved1 Sintered metal materials Specifications 1Scope This International Standard specifies the requirements for the chemical composition a
14、nd the mechanical and physical properties of sintered metal materials used for bearings and structural parts. When selecting powder metallurgical materials, it should be taken into account that the properties depend not only on the chemical composition and density, but also on the production methods
15、. The properties of sintered materials giving satisfactory service in particular applications may not necessarily be the same as those of wrought or cast materials that might otherwise be used. Therefore liaison with prospective suppliers is recommended. 2Normative references The following normative
16、 documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are
17、encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. I
18、SO 2738, Sintered metal materials, excluding hardmetals Permeable sintered metal materials Determination of density, oil content and open porosity. ISO 2739, Sintered metal bushes Determination of radial crushing strength. ISO 2740, Sintered metal material, excluding hardmetals Tensile test pieces.
19、ISO 2795, Plain bearings Sintered bushes Dimensions and tolerances. ISO 6892, Metallic materials Tensile testing at ambient temperature. 3Sampling Sampling shall be carried out in accordance with the relevant International Standards. ISO 5755:2001(E) 2 ISO 2001 All rights reserved 4Test methods for
20、normative properties 4.1General The following test methods shall be used to determine the normative properties given in Tables 1 to 11. 4.2Chemical analysis Whenever possible, and always in cases of dispute, the methods of chemical analysis shall be those specified in the relevant International Stan
21、dards. If no International Standard is available, the method may be agreed upon and specified at the time of enquiry and order. 4.3Open porosity The open porosity shall be determined in accordance with ISO 2738. 4.4Radial crushing strength The radial crushing strength shall be determined in accordan
22、ce with ISO 2739. 4.5Tensile strength The ultimate tensile strength shall be determined in accordance with ISO 2740 and ISO 6892. 4.6Tensile yield strength The yield strength shall be determined in accordance with ISO 2740 and ISO 6892. 4.7Mechanical properties 4.7.1General The mechanical properties
23、 given in Tables 1 to 11 were determined on pressed and sintered test pieces at mean chemical composition and are intended as a guide to initial selection of materials (see clause 1). They may also be used as a basis for specifying any special tests that may be indicated on the drawing. The mechanic
24、al properties shall neither be calculated from hardness values, nor be determined on tensile test pieces taken from a component and used for verifying the values given in Tables 1 to 11. If the customer requires that a specified level of mechanical properties be obtained by tests on the component, t
25、hese shall be agreed with the supplier and shall be stated on the drawing and/or any technical documentation of the customer referred to on the drawing. 4.7.2Tensile properties The normative values for yield strength shall be determined in accordance with ISO 6892, using pressed and sintered test pi
26、eces made in accordance with ISO 2740. For heat-treated materials, tensile strength and yield strength are approximately equal and in this case tensile strength, determined on machined test pieces according to ISO 2740, is specified. 4.7.3Radial crushing strength The radial crushing strength shall b
27、e determined in accordance with ISO 2739. The wall thicknesses of test pieces to be used shall be in the range covered by ISO 2795. For test pieces outside this range, the specified radial crushing strength values are different and shall be agreed between customer and supplier. ISO 5755:2001(E) ISO
28、2001 All rights reserved3 5Specifications The chemical composition and mechanical properties are given in Tables 1 to 11. The liquid lubricant content of materials for bearings, impregnated with liquid lubricant, shall be not less than 90 % of the measured open porosity. 6Designations Designations s
29、hall be in accordance with annex A. ISO 5755:2001(E) 4 ISO 2001 All rights reserved Table 1 Materials for bearings: iron, iron-copper, iron-bronze and iron-carbon-graphite ParameterIronIron-copper Iron-bronze a Iron-carbon-graphitea GradebGradebGradebGradeb Chemical composition Symbol Unit -F-00-K17
30、0-F-00-K220-F-00C2-K200-F-00C2-K250-F-03C36T-K90-F-03C36T-K120-F-03C45T-K70-F-03C45T-K100-F-03G3-K70-F-03G3-K80 C combinedc %?0,3?0,3?0,3?0,3?0,5?0,5?0,5?0,5?0,5?0,5 Cu%1 to 41 to 434 to 3834 to 3843 to 4743 to 47 Fe%BalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalance Sn%3,5 to 4,
31、53,5 to 4,54,5 to 5,54,5 to 5,5 Graphite%0,3 to 1,00,3 to 1,0?1,0?1,02,0 to 3,52,0 to 3,5 Total other elements max.%2222222222 Open porositymin.P%22172217241924192013 Radial crushing strengthmin. KMPa17022020025090 to 265120 to 34570 to 245100 to 31070 to 17580 to 210 Normative values Density(dry)?
32、g/cm3 5,86,25,86,25,86,25,66,05,66,0 d Coefficient of linear expansiond 10?6K?1 12121212141414141212 d a The range of values given for radial crushing strength (K) indicates the necessity to maintain a balance between combined carbon and free graphite. b All materials can be impregnated. c On the ba
33、sis of iron phase only. d Informative values. ISO 5755:2001(E) ISO 2001 All rights reserved5 Table 2 Non-ferrous materials for bearings ParameterUnitBronzeBronze with graphite GradeaGradea Chemical composition Symbol -C-T10-K110-C-T10-K140-C-T10-K180-C-T10G-K90-C-T10G-K120-C-T10G-K160 Cu%BalanceBala
34、nceBalanceBalanceBalanceBalance Sn%8,5 to 11,08,5 to 11,08,5 to 11,08,5 to 11,08,5 to 11,08,5 to 11,0 Graphite%0,5 to 2,00,5 to 2,00,5 to 2,0 Total other elements max.%222222 Open porositymin.P272215272217 Radial crushing strengthmin.K11014018090120160 Normative values Density(dry)? g/cm3 6,16,67,05
35、,96,46,8b Coefficient of linear expansionb 10?6K?1 181818181818b a All materials can be impregnated. b Informative values. 6 ISO 2001 All rights reserved Table 3 Ferrous materials for structural parts: iron and carbon steel ParameterUnitIronCarbon steel GradeGrade Chemical composition Symbol -F-00-1
36、00-F-00-120-F-00-140-F-05-140-F-05-170-F-05-340Ha-F-05-480Ha-F-08-210-F-08-240-F-08-450Hb-F-08-550Hb C combined%?0,3?0,3?0,30,3 to 0,60,3 to 0,60,3 to 0,60,3 to 0,60,6 to 0,90,6 to 0,90,6 to 0,90,6 to 0,9 Cu% Fe%BalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalance Total othe
37、r elements max.%22222222222 Tensile yield strengthmin.Rp0,2MPa100120140140170210240 Ultimate tensile strengthmin.RmMPa340480450550 Normative values Apparent hardnessHV562758590120280 HV10300 HV10120140320 HV10360 HV10 Rockwell60 HRF70 HRF80 HRF40 HRB60 HRB20 HRC25 HRC60 HRB70 HRB28 HRC33 HRC Density
38、? g/cm3 6,77,07,36,67,06,67,06,67,06,67,0 Tensile strengthRmMPa170210260220275410550290390520620 Tensile yield strengthRp0,2MPa120150170160200aa240260cc ElongationA25%34712nmdnmd11nmdnmd Youngs ModulusGPa120140160115140115140115140115140 Poissons ratio0,250,270,280,250,270,250,270,250,270,250,27 Unn
39、otched Charpy ImpactJ8244758455757 Compressive yield strength(0,1 %)MPa120125130210225300420290290400550 Transverse rupture strengthMPa340500660440550720970510690790950 Fatigue limit 90 % survivaleMPa658010080105160220120170210260 Informative values NOTEThese materials may be supplied with additives
40、 to improve machinability. The properties remain unchanged. a Austenitized at 850 C for 30 min in a protective atmosphere with a 0,5 % carbon potential, oil quenched and tempered at 180 C for 1 h. b Austenitized at 850 C for 30 min in a protective atmosphere with a 0,8 % carbon potential, oil quench
41、ed and tempered at 180 C for 1 h. c Tensile strength and tensile yield strength are approximately the same for heat treated materials. d nm = not measurable. e 90 % fatigue endurance limit in rotating bending tests. Machined test pieces in accordance with ISO 3928. ISO 5755:2001(E) ISO 2001 All righ
42、ts reserved7 Table 4 Ferrous materials for structural parts: copper steel and copper-carbon steel ParameterUnitCopper steelCopper-carbon steel GradeGrade Chemical composition Symbol -F-00C2-140 -F-00C2-175-F-05C2-270-F-05C2-300-F-05C2-500Ha-F-05C2-620Ha-F-08C2-350-F-08C2-390-F-08C2-500Hb-F-05C2-620H
43、b C combined%?0,3?0,30,3 to 0,60,3 to 0,60,3 to 0,60,3 to 0,60,6 to 0,90,6 to 0,90,6 to 0,90,6 to 0,9 Cu%1,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,51,5 to 2,5 Fe%BalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalanceBalance Total other elements
44、 max.%2222222222 Tensile yield strengthmin.Rp0,2MPa140175270300cc350390cc Ultimate tensile strengthmin.RmMPa500620500620 Normative values Apparent hardnessHV57090115150310 HV 10390 HV 10140165360 HV 10430 HV 10 Rockwell26 HRB39 HRB57 HRB68 HRB27 HRC36 HRC70 HRB78 HRB33 HRC40 HRC Density? g/cm3 6,67,
45、06,67,06,67,06,67,06,67,0 Tensile strengthRmMPa210235325390580690390480570690 Tensile yield strengthRp0,2MPa180205300330cc360420cc ElongationA25%23nmd1nmdnmdnmdnmdnmdnmd Youngs ModulusGPa115140115140115140115140115140 Poissons ratio0,250,270,250,270,250,270,250,270,250,27 Unnotched Charpy ImpactJ787
46、10577866 Compressive yield strength(0,1 %)MPa160185380400560660450480560690 Transverse rupture strengthMPa3904456207608009308009808301 000 Fatigue limit 90 % survivaleMPa8089130200220260150200230270 Fatigue limit 50 % survivalfMPa110160120150 Informative values NOTEThese materials may be supplied wi
47、th additives to improve machinability. The properties remain unchanged. a Austenitized at 850 C for 30 min in a protective atmosphere with a 0,5 % carbon potential, oil quenched and tempered at 180 C for 1 h. b Austenitized at 850 C for 30 min in a protective atmosphere with a 0,8 % carbon potential
48、, oil quenched and tempered at 180 C for 1 h. c Tensile strength and tensile yield strength are approximately the same for heat-treated materials. d nm = not measurable. e 90 % fatigue endurance limit in rotating bending tests. Machined test pieces in accordance with ISO 3928. f 50 % fatigue enduran
49、ce limit in 4-point plane bending. Non-machined test pieces in accordance with ISO 3928. ISO 5755:2001(E) 8 ISO 2001 All rights reserved Table 5 Ferrous materials for structural parts: phosphorus steels ParameterUnit Phosphorus steela Phosphorus carbonCopper-phosphorusCopper-phosphorus- steelsteelcarbon steel GradeGradeGradeGrade Chemical composition Symbol -F-00P05-180-F-00P05-210-F-05P05-270-F-05P05-320-F-00C2P-260-F-00C2P-300-F-05C2P-320-F-05C2P-380 C combined%?0,1?0,10,3 to