1、Designation: B595 11 (Reapproved 2016)Standard Specification forSintered Aluminum Structural Parts1This standard is issued under the fixed designation B595; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers sintered aluminum structuralparts made primarily from aluminum powders to which con-trolled amounts of mas
3、ter alloys or elemental copper,magnesium, and silicon have been added by mixing.1.2 This specification covers the following variables:1.2.1 CompositionDepending upon levels of copper,magnesium, and silicon content, two grades, and1.2.2 DensityType.1.3 Parts ordered to this specification will be in o
4、ne of thefollowing conditions:1.3.1 As-sintered,1.3.2 As-repressed for additional density, or1.3.3 All other conditions plus heat treated.1.4 With the exception of the values for density, for whichthe use of the gram per cubic centimeter unit is long-standingindustry practice, the values stated in S
5、I units are to beregarded as the standard.2. Referenced Documents2.1 ASTM Standards:2B243 Terminology of Powder MetallurgyB962 Test Methods for Density of Compacted or SinteredPowder Metallurgy (PM) Products Using ArchimedesPrincipleB963 Test Methods for Oil Content, Oil-ImpregnationEfficiency, and
6、Surface-Connected Porosity of SinteredPowder Metallurgy (PM) Products Using ArchimedesPrincipleE8 Test Methods for Tension Testing of Metallic Materials3. Terminology3.1 DefinitionsDefinitions of powder metallurgy termscan be found in Terminology B243. Additional descriptiveinformation is available
7、in the Related Material Section ofVolume 02.05 of the Annual Book of ASTM Standards.4. Ordering Information4.1 Orders for material to this specification shall include thefollowing information:4.1.1 Dimensions (see 9.1),4.1.2 Chemical composition (see 6.1),4.1.3 Density (see 7.1),4.1.4 State of heat
8、treatment,4.1.5 Mechanical property requirements (see 8.1), and4.1.6 Certification (see 14.1).5. Materials and Manufacture5.1 Structural parts shall be made by compacting andsintering metal powders to produce finished parts conformingto the requirements of this specification.6. Chemical Composition6
9、.1 The material shall conform to the requirements of Table1.6.2 The chemical analysis shall be made in accordance withthe methods prescribed in the latest edition of the Annual Bookof ASTM Standards, Vol 03.05, or any other approved methodagreed upon between the manufacturer and the purchaser.7. Den
10、sity7.1 The parts shall conform to the density range prescribedin Table 2.7.2 The density shall be measured in accordance with TestMethod B962.7.3 If the density does not vary more than 0.1 g/cm3fromone section of the structural part to any other section, theoverall density shall fall within the lim
11、its prescribed in Table 2.7.4 If the density varies more than 0.1 g/cm3from onesection of the structural part to any other section, the manu-facturer and the purchaser shall agree upon a critical section ofthe part where the stresses are the highest. The density of thiscritical section rather than t
12、he average density shall fall withinthe limits prescribed in Table 2.1This specification is under the jurisdiction of ASTM Committee B09 on MetalPowders and Metal Powder Productsand is the direct responsibility of Subcommit-tee B09.05 on Structural Parts.Current edition approved June 1, 2016. Publis
13、hed June 2016. Originallyapproved in 1973. Last previous edition approved in 2011 as B595 11. DOI:10.1520/B0595-11R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer t
14、o the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States18. Mechanical Properties8.1 The manufacturer and the purchaser shall agree onqualification tests for the determination of mechani
15、cal proper-ties.8.2 These tests shall be performed on production parts.8.3 These tests shall be determined after consideration ofthe function of the part.8.4 The limits and sampling plan shall be agreed uponbetween the manufacturer and purchaser.8.5 All shipments of parts subsequent to the establish
16、mentof testing conditions shall conform to the limits agreed upon.NOTE 1The mechanical properties in tension and compression thatmay be expected from standard specimens compacted to size are given inAppendix X1 of this specification.9. Dimensions and Tolerances9.1 Permissible variations in dimension
17、s shall be within thelimits specified on the drawings describing the structural partsaccompanying the order or shall be within the limits specifiedin the order.10. Workmanship, Finish, and Appearance10.1 Structural parts shall be uniform in composition.10.2 When parts are cut or fractured, the expos
18、ed surfaceshall be of uniform appearance.11. Sampling11.1 Chemical AnalysisIf required by purchaseagreement, at least one sample for chemical analysis shall betaken from each lot. A representative sample of chips may beobtained by dry milling, drilling or crushing at least two pieceswith clean dry t
19、ools without lubrication. To obtain oil-freechips, the parts selected for test shall have the oil extracted inaccordance with Test Method B963, if necessary.11.2 Mechanical TestsThe manufacturer and purchasershall agree on the number of specimens for mechanical tests.12. Inspection12.1 Unless otherw
20、ise specified, inspection of parts sup-plied on contract shall be made by the purchaser.13. Rejection and Rehearing13.1 Parts that fail to conform to the requirements of thisspecification may be rejected. Rejection should be reported tothe producer or supplier promptly and in writing. In case ofdiss
21、atisfaction with test results, the producer or supplier maymake claim for rehearing.14. Certification14.1 When specified in the purchase order or contract, aproducers certification shall be furnished to the purchaser thatthe parts were manufactured, sampled, tested, and inspected inaccordance with t
22、his specification and have been found to meetthe requirements. When specified in the purchase order orcontract, a report of the test results shall be furnished.14.2 The purchase order shall specify whether or not thecertification includes chemical composition.14.3 Upon request of the purchaser in th
23、e contract or order,the certification of an independent third party indicatingconformance to the requirements of this specification may beconsidered.15. Keywords15.1 as-repressed; as-sintered; density; interconnected po-rosity; oil-impregnated; powder metallurgy; sintered alumi-num; structural parts
24、; thermal conditionTABLE 1 Chemical RequirementsElementComposition, mass %AXX-6061AACXX-2014ACopper 0.5 max 3.55.0Magnesium 0.41.2 0.20.8Silicon 0.20.8 1.2 maxAluminum, min 96.0 91.5Total of other elements,determined by difference,max1.5 1.5A“XX” denotes thermal condition see footnote to Table X1.1T
25、ABLE 2 DensityType Dry Density, g/cm3I 2.30 to 2.45II 2.45 to 2.60III 2.60 minB595 11 (2016)2APPENDIX(Nonmandatory Information)X1. MECHANICAL PROPERTIES AND HARDNESS DATAX1.1 Data for the mechanical properties of sintered alumi-num specimens are given in Table X1.1 The data do notconstitute a part o
26、f this specification. They merely indicate tothe purchaser the mechanical properties that may be expectedfrom special tension specimens conforming to the density andchemical requirements specified. It should be understood thatthe values represent specimens compacted to size and notspecimens cut from
27、 commercial parts. See Fig. 20 of TestMethods E8.X1.2 Hardness values are given as apparent values, asdescribed in General Description of Production, Properties, andUses of Metal Powder Sintered Bearings, and Sintered MetalPowder Structural Parts (see gray pages).ASTM International takes no position
28、 respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.T
29、his standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM In
30、ternational Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address show
31、n below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-
32、9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ X1.1 Typical PropertiesAMaterial DesignationCodeB
33、TypeUltimate TensileStrengthTensile YieldStrength (0.2 % offset)Elongationin 25 mmApparentRockwellHardnessMPa MPa %AT1-6061 I 83 62 4.0 6065 HRHAT4-6061 I 97 79 3.5 6570 HRHAT6-6061 I 138 131 0.5 8085 HRHAT1-6061 II 128 69 6.0 8085 HRHAT4-6061 II 159 103 5.0 5055 HREAT6-6061 II 207 193 2.0 6570 HREA
34、CT1-2014 I 138 97 2.0 8085 HRHACT4-2014 I 165 145 2.0 5560 HREACT6-2014 I 207 172 0.5 6570 HREACT1-2014 II 152 117 3.0 8590 HRHACT4-2014 II 179 152 2.5 5560 HREACT6-2014 II 241 228 1.0 7075 HREACT1-2014 III 172 152 3.0 5560 HREACT4-2014 III 221 179 2.5 7075 HREACT6-2014 III 290 279 2.0 8085 HREATypi
35、cal sintering atmosphere for the above grades may be nitrogen, dissociated ammonia, or vacuum.BDescription of Thermal Conditions:T1 as-sintered.T4 solution heat treated at 505 to 520C, cold water quenched and aged minimum of 4 days at room temperature.T6 solution heat treated at 505 to 520C, cold water quenched and aged 18 h at 160 to 175C.B595 11 (2016)3
