ASTM B981 B981M-2012 Standard Specification for Low Leaded Brass Rod Bar and Shapes《低铅黄铜条、棒材和型材标准规格》.pdf
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1、Designation: B981/B981M 12Standard Specification forLow Leaded Brass Rod, Bar and Shapes1This standard is issued under the fixed designation B981/B981M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification establishes the requirements for lowleaded brass rod, bar, wire, and shapes of any specified crosssection produced fr
3、om Copper Alloys UNS No. C36300,C36500, C37000, C37100 and C37700 suitable for high-speedscrew machining applications.NOTE 1Refer to Specification B124/B124M when purchasing bar orrod for forging production.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as
4、standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of thesafety concerns, if any,
5、 associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B124/B124M Specification for Copper and Copper Alloy
6、Forging Rod, Bar, and ShapesB249/B249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB250/B250M Specification for General Requirements forWrought Copper Alloy WireB601 Classification for Temper Designations for Copperand Copper AlloysWrought an
7、d CastE8/E8M Test Methods for Tension Testing of MetallicMaterials3. General Requirements3.1 The following sections of Specifications B249/B249M(rod, bar, and shapes) and B250/B250M (wrought copper alloywire) constitute a part of this specification.3.1.1 Terminology,3.1.2 Materials and Manufacture,3
8、.1.3 Workmanship, Finish, and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retest,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 Mill Test Report,3.1.13 Packaging and Package Mark
9、ing, and3.1.14 Supplementary Requirements.3.2 In addition, when a section with a title identical to thosereferenced in 3.1 appears in this specification, it containsadditional requirements that supplement those appearing inSpecifications B249/B249M and B250/B250M.4. Ordering Information4.1 Include t
10、he following information when placing ordersfor product under this specification, as applicable:4.1.1 ASTM specification designation and year of issue(Bxxx/BxxxM XX).4.1.2 Copper Alloy UNS No. designations (C36300,C36500, C37000, C37100 and C37700, see Section 6 andTable 1.4.1.3 Temper (see Section
11、7 and Table 2 and Table 3).4.1.4 Product cross section form (for example, round, hex-agonal, square, etc.).1This test method is under the jurisdiction of ASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Curren
12、t edition approved April 1, 2012. Published May 2012. DOI: 10.1520/B0981_B0981M-12.2For 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 to the standards Document Summary pa
13、ge onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.5 Dimensions (see Section 9).4.1.6 How furnished: straight lengths or coils (see 5.2).4.1.7 Edge contours (see Section 9).4.1.8 Quantity; total weight, footage
14、, or number of piecesfor each size.4.2 The following options are available and shall be speci-fied at the time of placing the order when required:4.2.1 Tensile test requirement for product12 in. 12 mmand over (see 8.2).4.2.2 Certification (refer to Specifications B249/B249M orB250/B250M).4.2.3 Mill
15、Test Report (refer to Specifications B249/B249Mor B250/B250M).4.2.4 When product is purchased for agencies of the U.S.Government see Section 11.5. Materials and Manufacture5.1 MaterialThe material of manufacture shall be a castbillet of Copper Alloys UNS No. C36300, C36500, C37000,C37100 and C37700
16、and of such purity and soundness as to besuitable for hot extrusion into rod, bar, wire, and shapedproducts.5.1.1 In the event that heat identification or traceability isrequired, the purchaser shall specify the details desired.NOTE 2Due to the discontinuous nature of the processing of castingsinto
17、wrought products, it is not always practical to identify a specificcasting analysis with a specific quantity of finished material.5.2 ManufactureProduct produced under this specifica-tion shall be in straight lengths; however, it shall be furnishedin coils when so specified in the contract or purcha
18、se order (see4.1.6).TABLE 1 Chemical RequirementsComposition (%)CopperAlloyUNS No.Copper Lead Phosphorus Iron Max. Tin Max. ZincCopper PlusElements withSpecific LimitsPresent, minC36300 61.0 63.0 0.25 0.7 0.04 0.15 0.15 remainder 99.5C36500 58.0 61.0 0.25 0.7 0.15 remainder 99.6C37000 59.0 62.0 0.8
19、1.5 0.15 remainder 99.6C37100 58.0 62.0 0.6 1.2 0.15 remainder 99.6C37700 58.0 61.0 1.5 2.5 0.30 remainder 99.5TABLE 2 Tensile Requirements, inch-poundNOTESee Table 3 for SI values.Temper DesignationCode NameDiameter orDistanceBetweenParallelSurfaces, in.Tensile Strength, min, ksiYield Strengthat 0.
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