1、Designation: B824 16B824 17Standard Specification forGeneral Requirements for Copper Alloy Castings1This standard is issued under the fixed designation B824; 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification establishes general requi
3、rements common to ASTM copper alloy casting specifications B22/B22M, B61,B62, B66, B67, B148, B176, B271/B271M, B369, B427, B505/B505M, B584, B763/B763M, B770, and B806. Theserequirements apply to the casting specifications to the extent referenced therein.1.1.1 In the event of conflict between this
4、 specification and a casting specification, the requirements of the casting specificationshall take precedence.1.2 The chemical composition and other requirements not included in this specification shall be prescribed in the casting productspecifications.1.3 UnitsThe values stated in inch-pound unit
5、s are to be regarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided for information only and are not considered standard.1.4 No precise quantitative relationship can be stated between the properties of the metal in various locations of the same
6、 castingor between the properties of castings and those of a test bar casting from the same metal. (See Appendix X1.)21.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development
7、 of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents, of the issue in effect on date of casting purchase, form, part of this specification to the extentreferenced h
8、erein:2.2 ASTM Standards:3B22/B22M Specification for Bronze Castings for Bridges and TurntablesB61 Specification for Steam or Valve Bronze CastingsB62 Specification for Composition Bronze or Ounce Metal CastingsB66 Specification for Bronze Castings for Steam Locomotive Wearing PartsB67 Specification
9、 for Car and Tender Journal Bearings, LinedB148 Specification for Aluminum-Bronze Sand CastingsB176 Specification for Copper-Alloy Die CastingsB193 Test Method for Resistivity of Electrical Conductor MaterialsB194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled BarB208 Pract
10、ice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and ContinuousCastingsB271/B271M Specification for Copper-Base Alloy Centrifugal CastingsB369 Specification for Copper-Nickel Alloy CastingsB427 Specification for Gear Bronze Alloy Castings1 This specificati
11、on is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.05 on Castingsand Ingots for Remelting.Current edition approved Oct. 15, 2016April 1, 2017. Published October 2016May 2017. Originally approved in 1992. Last previous e
12、dition approved in 20142016 asB824 14.B824-16. DOI: 10.1520/B0824-16.10.1520/B0824-17.2 For ASME Boiler and Pressure Vessel Code application, see related specification in Section II of that code.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at s
13、erviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previo
14、us version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Chang
15、es section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1B505/B505M Specification for Copper Alloy Continuous CastingsB584 Specification for Copper Alloy Sand Castings for General ApplicationsB763/
16、B763M Specification for Copper Alloy Sand Castings for Valve ApplicationsB770 Specification for Copper-Beryllium Alloy Sand Castings for General ApplicationsB806 Specification for Copper Alloy Permanent Mold Castings for General ApplicationsB846 Terminology for Copper and Copper AlloysE8/E8M Test Me
17、thods for Tension Testing of Metallic MaterialsE10 Test Method for Brinell Hardness of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE54 Test Methods for Chemical Analys
18、is of Special Brasses and Bronzes (Withdrawn 2002)4E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)4E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys (Withdrawn 2003)4E255 Practice for Sampling Copper and Copper Alloys for the Det
19、ermination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE581 Test Methods for Chemical Analysis of Manganese-Copper Alloys2.3 JIS Standard:5JIS H 1068:2005 Methods for Determination of Bismuth in Copper and Copper Alloys (Japanese Industrial Standards)3. Terminology
20、3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.3.2 Definitions of Terms Specific to this Standard:3.2.1 lota collection of like final product (same alloy, temper, dimensions, as applicable) produced under the same or identicalconditions from which samples
21、 were drawn for inspection or testing, or both.4. Materials and Manufacture4.1 ManufactureMechanical properties of CopperAlloy UNS Nos. C94700, C95300, C95400, C95410, C95500, C95520, andC96800 can be changed by heat treatment. Suggested heat treatments are given in the casting specifications contai
22、ning these alloys.5. Chemical Composition5.1 The casting material shall conform to the chemical requirements of the casting product specification involved.5.2 These composition limits do not preclude the presence of other elements. Limits may be established and analysis requiredfor unnamed elements
23、by agreement between the manufacturer and the purchaser.6. Mechanical Property Requirements6.1 When tension testing is required by the casting product specification, the results shall conform to the requirements of thatspecification, when tested in accordance with Test Methods E8/E8M.6.2 When Brinel
24、l Hardness testing is required by the casting product specification, the results shall conform to the requirementsof that specification, when tested in accordance with the Test Method E10.6.3 When Rockwell Hardness testing is required by the casting product specification, the results shall conform t
25、o therequirements of that specification, when tested in accordance with the Test Methods E18.7. Other Requirements7.1 Hydrostatic TestWhen specified in the purchase order, a hydrostatic test shall be performed on the castings. The detailsof the test and acceptance criteria shall be established by ag
26、reement between the manufacturer and the purchaser.7.2 SoundnessWhen specified in the purchase order, castings shall meet soundness requirements furnished or referenced bythe purchaser. In the absence of standards for soundness, the requirement shall be as agreed upon between the manufacturer andthe
27、 purchaser.7.3 When Electrical Resistivity testing is required by the casting product specification, the results shall conform to therequirements of that specification, when tested in accordance with the Test Method B193.8. Dimensions, Mass, and Permissible Variations8.1 The manufacturer shall be re
28、sponsible for conforming to the dimensional requirements of the castings as related to thedrawing when the pattern equipment is produced by the manufacturer.4 The last approved version of this historical standard is referenced on www.astm.org.5 Available from Japanese Standards Association (JSA), Mi
29、ta MT Bldg., 3-13-12 Mita, Minato-ku, Tokyo 108-0073, Japan, http:/www.jsa.or.jp.B824 1728.2 When the pattern equipment is provided by the purchaser, the manufacturer shall be responsible for conforming to thedimensional requirements of the castings, but with any mutually agreed to exceptions relati
30、ng to the provided pattern equipment.8.3 Where thick and thin sections of the casting adjoin, the manufacturer shall be permitted to add fillets of adequate size, wherenot previously provided, subject to approval of the purchaser.9. Workmanship, Finish, and Appearance9.1 The surface of the casting s
31、hall be free of adhering sand, cracks, and hot tears. Other surface discontinuities shall meet visualacceptance standards agreed upon between the manufacturer and the purchaser.10. Sampling10.1 Lot SizeA lot shall consist of: (1) all of the metal poured from a single furnace or crucible melt, or (2)
32、 all of the metalpoured from two or more furnaces into a single ladle, or (3) all of the metal poured from a continuous melting furnace betweencharges, or (4) all of the metal poured from an individual melting furnace or group of melting furnaces having a uniform meltingstock, similar charges and th
33、e charge calculation shall be similar for all furnaces, operating during the course of one-half shift, notto exceed 5 h.10.2 Chemical Analysis:10.2.1 The sample for chemical analysis shall be taken in accordance with Practice E255 for product in the final form from thepieces selected in 10.1 and com
34、bined into one composite sample. The minimum weight of the composite sample shall be 150 g.10.2.2 Instead of sampling as directed in 10.2.1, the manufacturer shall have the option of sampling at the time castings arepoured or from the semifinished product. When samples are taken during the course of
35、 manufacture, sampling of the finishedproduct by the manufacturer is not required. The number of samples taken for the determination of composition shall be as follows:10.2.2.1 When samples are taken at the time the castings are poured, at least one sample shall be taken for each group of castingspo
36、ured from the same source of molten metal.10.3 Tension-test bars used in meeting the requirements of 6.1 shall be separately cast for the sand, permanent mold, andcentrifugal casting processes. The results represent the properties of the metal going into castings poured from the same heat. Themechan
37、ical properties may not be the same as the properties of the corresponding castings because of the solidification effects ofvarying size, section, and design. Test bars for continuous castings are taken from the castings and therefore represent theproperties of the casting.10.3.1 When the requiremen
38、ts of 6.1 have been complied with using separately cast test bars, additional tests may be performedusing test bars removed from the casting with test bar location and mechanical properties agreed upon between the manufacturerand the purchaser. It should be noted that the minimum requirements, liste
39、d in applicable specifications, were obtained using datafrom separately cast coupons. Test specimens machined from castings may not achieve these results.11. Number of Tests and Retests11.1 Tests:11.1.1 A chemical analysis of each element with a specified limiting value shall be made on each lot. Ch
40、emical analysis forresidual elements is not required unless specified in the purchase order.11.1.2 One tension test shall be performed on each lot.11.1.3 Should the percent elongation of any tensile-test specimen be less than that specified and any part of the fracture isoutside the middle two-third
41、s of the gage length or in a punched or scribed mark within the reduced section, the specimen maybe discarded and replaced by another from the same lot.11.1.4 If the result of any test fails to conform to the specified requirements, two retests shall be performed. If either retest failsto meet the s
42、pecified requirements, the lot shall be rejected.11.1.5 Should any of the properties be less than that specified and there is a discontinuity in the cross-sectional area of thefracture, the specimen may be discarded and replaced by another of the same lot.11.2 Retests:11.2.1 When requested by the ma
43、nufacturer, a retest shall be permitted when test results obtained by the purchaser fail toconform to the casting specification requirements.11.2.2 Retesting shall be as prescribed in the casting specification for the initial test, except the number of test specimens shallbe twice that normally requ
44、ired for the test. Test results for all specimens shall comply with the casting specification requirements.Failure to comply shall be cause for rejection.11.2.3 Chemical AnalysisIf one or more of the elements with specified limits fail to meet the compositional requirement ofthe product specificatio
45、n when determined from the sample prepared in accordance with Practice E255, one retest cycle shall bepermitted with a second composite sample prepared in accordance with Practice E255.B824 17312. Specimen Preparation12.1 The specimen for chemical analysis shall be taken from the lot in such a manne
46、r as to avoid contamination and berepresentative of the molten metal. Sample preparation shall be in accordance with Practice E255.Analytical specimen preparationshall be the responsibility of the reporting laboratory.12.2 Tension-test specimens shall be prepared in accordance with Practice B208.12.
47、2.1 If any specimen is machined improperly or if flaws are revealed by machining or during testing, the specimen shall bediscarded and replaced by another from the same lot.13. Test Methods13.1 Chemical Composition:13.1.1 The chemical analysis methods used for the routine determination of specificat
48、ion compliance and preparation of testreports shall be at the discretion of the laboratory performing the analysis.13.1.2 In case of disagreement on chemical composition, referee analytical methods for copper alloys other than copper-beryllium alloys (Specification B770) are given in Table 1. Refere
49、e analytical methods for copper-beryllium alloys are given inthe Annex of Specification B194.13.1.3 The determination of magnesium, niobium, zirconium, and titanium, for which no recognized test method is known tobe published, shall be subject to agreement between the manufacturer and the purchaser.13.1.4 Analytical methods for elements with ranges beyond those given in Table 1 shall be subject to agreement between themanufacturer and the purchaser.13.1.5 Analytical methods for the determination of elements required by the purchase order agreement shall be as agreed upo
