ASTM B21 B21M-2012 Standard Specification for Naval Brass Rod Bar and Shapes《海军军舰用黄铜杆材 棒材和型材标准规格》.pdf
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1、Designation:B21/B21M06 Designation: B21/B21M 12Standard Specification forNaval Brass Rod, Bar, and Shapes1This standard is issued under the fixed designation B21/B21M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of las
2、t revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification establishes the requirements for naval brass rod, bar, and shapes produced from Copper Alloy UNS Nos.
3、C46200, C46400, C47940, C48200, or C48500.1.1.1 For piston-finish rod or shafting refer to the Other Requirements Section.1.1.2 For hot forging material, refer to Specification B124/B124M.1.2 UnitsThe values stated in inch-pound units or SI units are to be regarded separately as standard. Within the
4、 text, SI unitsare shown in brackets. The values stated in each system aremay not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification.1.3 WarningMercury is a definite health ha
5、zard in use and disposal (see Performance Requirements).1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability
6、 of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and ShapesB154 Test Method for Mercurous Nitrate Test for Copper AlloysB249/B249M Specification for General Requirements for Wrought Copper and Cop
7、per-Alloy Rod, Bar, Shapes and ForgingsB601 Classification for Temper Designations for Copper and Copper AlloysWrought and CastB858 Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper AlloysB950 Guide for Editorial Procedures and Form of Product S
8、pecifications for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Metallic Materials MetricE18 Test Methods for Rockwell Hardness of Metallic MaterialsE478 Test Methods for Chemical Analysis of Copper Alloys3. General Requireme
9、nts3.1 The following sections of Specification B249/B249M constitute 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,3.1.8 Significa
10、nce of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,1This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,Wire, Shapes and Forgings.Current edition approved Feb. 1, 2006.
11、 Published February 2006. Originally approved in 1918. Last previous edition approved in 2001 as B21/B21M011. DOI:10.1520/B0021_B0021M-06.Current edition approved April 1, 2012. Published May 2012. Originally approved in 1918. Last previous edition approved in 2006 as B21/B21M 06. DOI:10.1520/B0021_
12、B0021M-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.1This document is not an ASTM standard and is int
13、ended only to provide the user of an ASTM standard an indication of what changes have been made to the previous 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 curr
14、ent versionof the standard as published by ASTM is to be considered the official document.*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.3.1.11 Certification,3.1.12 Mi
15、ll Test Report,3.1.13 Packaging and Product Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a section with a title identical to that referenced in 3.1, above, appears in this specification, it containsadditional requirements which supplement those appearing in Specification B249/
16、B249M.4. Ordering Information4.1 Include the following informationspecified choices when placing orders for product under this specification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper Alloy UNS No. designation (Scope),4.1.3 Temper (Temper Section and related Tables),4.1.4 F
17、ormcross-section such as round, hexagonal, square, and so forth,4.1.5 Diameter or distance between parallel surfaces, width and thickness (Dimensions and Permissible Variations),4.1.6 Length (Dimensions and Permissible Variations),4.1.7 Edge contours (Dimensions and Permissible Variations),4.1.8 Qua
18、ntitynumber of pieces or total weight, for each size and form, and4.1.9When product is specified for agencies of the U.S. government (Other RequirementsPurchases for U.S. Government).4.2The following are options available under this specification and are to be specified in the contract or purchase o
19、rder whenrequired:4.1.9 Intended application.4.2 The following options are available, but may not be included, unless specified at the time of placing of the order whenrequired:4.2.1 Tensile test for product12 in. 12 mm and over, for the alloys and tempers listed in Table 4.4.2.2 Residual stress tes
20、t (Performance Requirements section),4.2.3 Piston finish rod or shafting (Other Requirements section),4.2.4 Certification (Specification B249/B249M),4.2.5 Mill test report (Specification B249/B249M), and ),4.2.6 Heat identification or traceability details (Specification B249/B249M). ), and4.2.7 If p
21、roduct is purchased for agencies of the U.S. government (Other RequirementsPurchases for U.S. Government).5. Chemical Composition5.1 The material shall conform to the chemical composition requirements specified in Table 1 for the Copper Alloy UNS No.designation specified in the ordering information.
22、5.2 These composition limits do not preclude the presence of other elements. Limits may be established and analysis requiredfor unnamed elements by agreement between the manufacturer or supplier, and purchaser.5.3 For copper alloys in which zinc is listed as the “remainder,” either copper or zinc ma
23、y be taken as the difference betweenthe sum of results of all other elements determined and 100 %. When copper is so determined, that difference value shall conformto the requirements given in Table 1.5.4 When all elements listed in Table 1 for the Copper Alloy UNS No. specified in the ordering info
24、rmation are determined,the sum of results shall be 99.6 % minimum.6. Temper6.1 The standard tempers for products described in this specification, as defined in Classification B601, are shown in Tables 2and 3.7. Mechanical Property Requirements7.1 Product furnished under this specification shall conf
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