1、Designation: B371/B371M 15Standard Specification forCopper-Zinc-Silicon Alloy Rod1This standard is issued under the fixed designation B371/B371M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number i
2、n parentheses indicates the year of last reapproval.A superscript 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 the requirements forcoppe
3、r-zinc-silicon alloy rod produced in Copper Alloy UNSNos. C69240, C69300, C69400, C69430, C69700, andC69710.1.1.1 If the purchaser does not specify the alloy to besupplied, product is permitted to be furnished in any of thealloys named in 1.1.1.2 UnitsThe values stated in either SI units or inch-pou
4、nd units are to be regarded separately as standard. Thevalues stated in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.3 The following safety hazard cavea
5、t pertains only to thetest methods described in this specification. This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicab
6、ility of regulatory requirementsprior to use.1.4 WarningMercury has been designated by many regu-latory agencies as a hazardous material that can cause seriousmedical issues. Mercury, or its vapor, has been demonstrated tobe hazardous to health and corrosive to materials. Cautionshould be taken when
7、 handling mercury and mercury contain-ing products. See the applicable product Safety Data Sheet(SDS) for additional information. Users should be aware thatselling mercury and/or mercury containing products into yourstate or country may be prohibited by law.2. Referenced Documents2.1 ASTM Standards:
8、2B154 Test Method for Mercurous Nitrate Test for CopperAlloysB249/B249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB858 Test Method for Ammonia Vapor Test for DeterminingSusceptibility to Stress Corrosion Cracking in CopperAlloysE8/E8M Test
9、Methods for Tension Testing of Metallic Ma-terialsE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes (Withdrawn 2002)3E62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)3E478 Test Methods for Chemical Analysis of Copper Alloys3. G
10、eneral Requirements3.1 The following sections of Specification B249/B249Mconstitutes a part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods
11、,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved
12、 Oct. 1, 2015. Published October 2015. Originallyapproved in 1961. Last previous edition approved in 2013 as B371/B371M 08(2013). DOI: 10.1520/B0371_B0371M-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of
13、ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive,
14、PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.11 Certification,3.1.12 Test Report,3.1.13 Packaging and Package Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a section with a title identical to thatreferenced in 3.1, above, appears in this specification, itcon
15、tains additional requirements which supplement those ap-pearing in Specification B249/B249M.4. Ordering Information4.1 Include the following information when placing ordersfor product under this specification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper alloy UNS No. designat
16、ion,4.1.3 FormCross section such as round, hexagon, and soforth,4.1.4 Temper(Section 7),4.1.5 DimensionsDiameter or distance between parallelsurfaces, nominal specific or stock length,4.1.6 QuantityTotal weight, footage, or number of pieces,and4.1.7 If product is purchased for agencies of the U.S.go
17、vernment (see Supplementary Requirements section ofSpecification B249/B249M).4.2 The following options are available and should bespecified at the time of placing the order, when required:4.2.1 Residual Stress Test (Performance Requirementssection, Section 9),4.2.1.1 Ammonia Vapor Test or Mercurous
18、Nitrate Test,4.2.1.2 For the Ammonia Vapor Test, pH value other than10.4.2.2 Certification (Specification B249/B249M), and4.2.3 Mill test report (Specification B249/B249M).5. Material and Manufacture5.1 MaterialThe material of manufacture shall be castbillets, logs, or rods of Copper Alloy UNS Nos.
19、C69240,C69300, C69400, C69430, C69700, or C69710 of such purityand soundness to be suitable for processing into the productprescribed herein.5.2 ManufactureThe product shall be manufactured byhot extrusion and finished by such cold working, annealing,straightening, and cutting to length as may be ne
20、cessary tomeet the properties specified.6. Chemical Composition6.1 The material shall conform to the chemical composi-tional requirements specified in Table 1 for the Copper AlloyUNS No. designation specified in the ordering information.6.1.1 These compositional limits do not preclude the pres-ence
21、of other elements. By agreement between the manufac-turer and the purchaser, limits may be established and analysisrequired for unnamed elements.6.2 For alloys in which zinc is listed as “remainder,” eithercopper or zinc may be taken as the difference between the sumof results of all other elements
22、determined and 100 %.6.3 When all elements in Table 1 are determined, the sum ofresults shall be 99.5 % min.7. Temper7.1 The standard temper for products under this specifica-tion is H02 (Half Hard) for UNS No. C69240 and C69300 andH04 (Hard) for UNS Nos. C69400, C69430, C69700, andC69710.8. Mechani
23、cal Property Requirements8.1 Tensile Strength RequirementsProduct furnished un-der this specification shall conform to the tensile requirementsprescribed in Table 2 when tested in accordance with TestMethods E8/E8M.9. Performance Requirements9.1 Residual Stress Test:9.1.1 When specified in the contr
24、act or purchase order, theproduct shall be tested for residual stress according to therequirements of Test Method B154 or Test Method B858, andshow no signs of cracking. (WarningMercury is a definitehealth hazard. With the Mercurous Nitrate Test, equipment forTABLE 1 Chemical RequirementsElementComp
25、osition, %Copper Alloy UNS No.C69240 C69300 C69400 C69430 C69700 C69710min max min max min max min max min max min maxCopperA71.0 72.5 73.0 77.0 80.0 83.0 80.0 83.0 75.0 80.0 75.0 80.0Silicon 1.8 2.2 2.7 3.4 3.5 4.5 3.5 4.5 2.5 3.5 2.5 3.5Lead . 0.25 . 0.09 . 0.30 . 0.30 0.50 1.5 0.50 1.5Iron . 0.20
26、 . 0.10 . 0.20 . 0.20 . 0.20 . 0.20Tin . 0.30 . 0.20 . . . . . . . .NickelB0.10 0.50 . 0.10 . . . . . . . .Manganese 0.6 1.2 . 0.10 . . . . . 0.40 . 0.40Arsenic . . . . . . 0.03 0.06 . . 0.03 0.06Antimony . . . . . . . . . . . .Phosphorus 0.06 0.12 0.04 0.15 . . . . . . . .Zinc remainder remainder r
27、emainder remainder remainder remainderAIncludes Silver.BNi value includes Co.B371/B371M 152the detection and removal of mercury vapor produced involatilization and the use of protective gloves is recom-mended.)9.1.2 When the Ammonia Vapor Test is used, the test pHvalue appropriate for the intended a
28、pplication shall be 10unless otherwise specified by the purchaser.NOTE 1Aresidual stress test provides information about the adequacyof the stress relief of the material. Bar straightening is a method ofmechanical stress relief. Stress relief annealing is a method of thermalstress relief.10. Other R
29、equirements10.1 Purchases for the U.S. GovernmentProduct pur-chased for agencies of the U.S. government shall conform tothe additional requirements prescribed in the SupplementaryRequirements section of Specification B249/B249M.11. Dimensions and Permissible Variations11.1 The dimensions and toleran
30、ces for product describedby this specification shall be as specified in SpecificationB249/B249M with particular reference to the following tablesand related paragraphs:11.1.1 Diameter or Distance Between Parallel SurfacesRefer to Table 2, Tolerances for Diameter of Cold-Drawn Rod.11.1.2 LengthRefer
31、to Table 13, Length Tolerances forRod, Bar, and Shapes, and Table 15, Schedule of Lengths withEnds for Rod and Bar.11.1.3 StraightnessRefer to Table 16, Straightness Toler-ances for Rod, Bar, and Shapes, For General Use section.11.1.4 Edge ContoursRefer to Edge Contours section.12. Test Methods12.1
32、Chemical composition, in case of disagreement, shallbe determined as follows:Element ASTM Test MethodsAntimony E62Arsenic E62Copper E478Iron E478Lead E478, atomic absorptionManganese E62Phosphorous E62Silicon E54Zinc E478, Titrametric12.2 Test method(s) to be followed for the determination ofelement
33、(s) resulting from contractual or purchase order agree-ment shall be as agreed upon between the manufacturer orsupplier and the purchaser.13. Keywords13.1 copper-zinc-silicon rod; UNS No. C69240; UNS No.C69300; UNS No. C69400; UNS No. C69430; UNS No.C69700; UNS No. C69710TABLE 2 Tensile RequirementsTemper 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:/ 154
