1、Designation:B64312(Reapproved 2016)Standard Specification forCopper-Beryllium Alloy Seamless Tube1This standard is issued under the fixed designation B643;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A nu
2、mber 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 requirements for copper-
3、beryllium alloy seamless tube in straight lengths.CopperAlloyUNS C17200 will be the alloy furnished whenever Specifica-tion B643 is specified.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are
4、provided forinformation only and are not considered standard.1.3 The following safety hazard caveat pertains only to thetest methods described in this specification.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the u
5、ser 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 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent refer
6、enced herein:2.2 ASTM Standards:2B194 Specification for Copper-BerylliumAlloy Plate,Sheet,Strip,and Rolled BarB251 Specification for General Requirements for WroughtSeamless Copper and Copper-Alloy TubeB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Termin
7、ology for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifi
8、cationsE112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)3.Terminology3.1 DefinitionsFor terms relating to copper and cop
9、peralloys,refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 stock,nstraight lengths that are mill cut and storedin advance of orders.They are usually 8,10,12,or 20 ft(2.44,3.05,3.66,or 6.10 m)and subject to established lengthtolerances.4.General Requirements4.1 The f
10、ollowing sections of Specification B251 constitutea part of this specification:4.1.1 Workmanship,Finish and Appearance,4.1.2 Significance of Numerical limits,4.1.3 Inspection,4.1.4 Rejection and Rehearing,4.1.5 Certification,4.1.6 Mill Test Report,and4.1.7 Packaging and Package Marking.5.Ordering In
11、formation5.1 Include the following information when placing ordersfor product under this specification,as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper(Alloy)UNS No.designation(see 1.1),5.1.3 Temper(see Section 8),5.1.4 Dimensions,specify O.D./I.D.,O.D./wall,or I.D./walland includ
12、e length if applicable,5.1.5 How furnished,stock lengths with or without ends,specific lengths with or without ends,5.1.6 Quantity:total weight or number or pieces,5.1.7 Special tests or exceptions,if any,1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys a
13、nd is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 1978.Last previous edition approved in 2012 as B643 12.DOI:10.1520/B0643-12R16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,or
14、contact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Co
15、nshohocken,PA 19428-2959.United States1 5.1.8 Hardness tests,if required,5.1.9 Special tests such as tension test or grain size,ifrequired,5.1.10 Special marking or packaging,if required,5.1.11 Inspection,if required(see Specification B251),5.1.12 Certification,if required(see Specification B251),an
16、d5.1.13 Mill test report,if required(see Specification B251).5.2 If the product is purchased for agencies of the U.S.Government(see Supplementary Requirements section ofSpecification B251,for additional requirements,if specified).6.Materials and Manufacture6.1 Material:6.1.1 The material of manufacture shall be billets,cast barsor tube of Copper Alloy UNS No.C17200,of such purity andsoundness as to be suitable for processing into the productsprescribed herein.6.1.2 The tube shall have heat trace
