1、Designation: B 371/B 371M 08Standard Specification forCopper-Zinc-Silicon Alloy Rod1This standard is issued under the fixed designation B 371/B 371M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A numb
2、er in 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 Department of Defense.1. Scope*1.1 This specification establishes the requirements forcopper
3、-zinc-silicon alloy rod produced in Copper Alloy UNSNos. C69300, C69400, C69430, C69700, and C69710.1.1.1 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-pound units
4、 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 caveat pertai
5、ns 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 applicability of
6、 regulatory requirementsprior to use.1.4 WarningMercury has been designated by EPA andmany state agencies as a hazardous material that can causecentral nervous system, kidney, and liver damage. Mercury, orits vapor, may be hazardous to health and corrosive tomaterials. Caution should be taken when h
7、andling mercury andmercury-containing products. See the applicable product Ma-terial Safety Data Sheet (MSDS) for details and EPAs website(http:/www.epa.gov/mercury/faq.htm) for additional informa-tion. Users should be aware that selling mercury or mercury-containing products, or both, in your state
8、 may be prohibited bystate law.2. Referenced Documents2.1 ASTM Standards:2B 154 Test Method for Mercurous Nitrate Test for CopperAlloysB 249/B 249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB 858 Test Method for Ammonia Vapor Test for Deter
9、min-ing Susceptibility to Stress Corrosion Cracking in CopperAlloysE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Metallic Mate-rials Metric3E54 Test Methods for Chemical Analysis of SpecialBrasses and Bronzes3E62 Test Methods for Chemical Analysis o
10、f Copper andCopper Alloys (Photometric Methods)E 478 Test Methods for Chemical Analysis of CopperAlloys3. General Requirements3.1 The following sections of Specification B 249/B 249Mconstitutes a part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish,
11、and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12 Test Report,3.1.13 Packaging and Package Marking, and3.1.14 Supplementary R
12、equirements.3.2 In addition, when a section with a title identical to thatreferenced in 3.1, above, appears in this specification, itcontains additional requirements which supplement those ap-pearing in Specification B 249/B 249M.1This specification is under the jurisdiction ofASTM Committee B05 on
13、Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapproved in 1961. Last previous edition approved in 2006 as B 371/B 371M 06.2For referenced ASTM standards,
14、visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.or
15、g.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Ordering Information4.1 Include the following information when placing ordersfor product under this specification,
16、 as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper alloy UNS No. designation,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 weigh
17、t, footage, or number of pieces,and4.1.7 If product is purchased for agencies of the U.S.government (see Supplementary Requirements section ofSpecification B 249/B 249M).4.2 The following options are available and should bespecified at the time of placing the order, when required:4.2.1 Residual Stre
18、ss Test (Performance Requirements sec-tion, Section 9),4.2.1.1 Ammonia Vapor Test or Mercurous Nitrate Test,4.2.1.2 For the Ammonia Vapor Test, pH value other than10.4.2.2 Certification (Specification B 249/B 249M), and4.2.3 Mill test report (Specification B 249/B 249M).5. Material and Manufacture5.
19、1 MaterialThe material of manufacture shall be castbillets, logs, or rods of Copper Alloy UNS Nos. C69300,C69400, C69430, C69700, or C69710 of such purity andsoundness to be suitable for processing into the productprescribed herein.5.2 ManufactureThe product shall be manufactured byhot extrusion and
20、 finished by such cold working, annealing,straightening, and cutting to length as may be necessary 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
21、in the ordering information.6.1.1 These compositional limits do not preclude the pres-ence 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,” eithercop
22、per or zinc may be taken as the difference between the sumof results of all other elements 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
23、. C69300 and H04 (Hard)for UNS Nos. C69400, C69430, C69700, and C69710.8. Mechanical 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(or E8M).
24、9. Performance Requirements9.1 Residual Stress Test:9.1.1 When specified in the contract or purchase order, theproduct shall be tested for residual stress according to therequirements of Test Method B 154 or Test Method B 858, andshow no signs of cracking. (WarningMercury is a definitehealth hazard.
25、 With the Mercurous Nitrate Test, equipment forthe 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 application shall be 10unless otherwise speci
26、fied 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 Requirements10.1 Purchases for the U.S. Gover
27、nmentProduct pur-chased for agencies of the U.S. government shall conform tothe additional requirements prescribed in the SupplementaryRequirements section of Specification B 249/B 249M.TABLE 1 Chemical RequirementsElementComposition, %Copper Alloy UNS No.C69300 C69400 C69430 C69700 C69710min max mi
28、n max min max min max min maxCopperA73.0 77.0 80.0 83.0 80.0 83.0 75.0 80.0 75.0 80.0Silicon 2.7 3.4 3.5 4.5 3.5 4.5 2.5 3.5 2.5 3.5Lead . 0.09 . 0.30 . 0.30 0.50 1.5 0.50 1.5Iron . 0.10 . 0.20 . 0.20 . 0.20 . 0.20Tin . 0.20 . . . . . . . .Nickel . 0.10 . . . . . . . .Manganese . 0.10 . . . . . 0.40
29、 . 0.40Arsenic . . . . 0.03 0.06 . . 0.03 0.06Antimony . . . . . . . . . .Phosphorus 0.04 0.15 . . . . . . . .Zinc remainder remainder remainder remainder remainderAIncludes Silver.B 371/B 371M 08211. Dimensions and Permissible Variations11.1 The dimensions and tolerances for product describedby thi
30、s specification shall be as specified in SpecificationB 249/B 249M 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 to Table 13, Length Tolerance
31、s 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 Chemical composition, in case
32、 of disagreement, shallbe determined as follows:Element ASTM Test MethodsAntimony E62Arsenic E62Copper E 478Iron E 478Lead E 478, atomic absorptionManganese E62Phosphorous E62Silicon E54Zinc E 478, Titrametric12.2 Test method(s) to be followed for the determination ofelement(s) resulting from contra
33、ctual 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. C69300; UNS No.C69400; UNS No. C69430; UNS No. C69700; UNS No.C69710SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue(B 371/B 371M 06) that may impact the use of this standard. (Approved Oct. 1, 2008.)(1) Changed lead level for alloy C69300 from .10 % max to.09 % max.TABLE 2 Tensile RequirementsTemper or through the ASTM website(www.astm.org).B 371/B 371M 084
