1、Designation:B64318Standard 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 number in parenthes
2、es 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-beryllium alloy s
3、eamless 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 provided forinfor
4、mation 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 user of this stand
5、ard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on P
6、rinciples for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification t
7、o theextent referenced 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 Tube(Metric)B0251_B0251MB601 Classification for Temper Designations for Copper andCop
8、per AlloysWrought and CastB846 Terminology 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
9、 toDetermine Conformance with SpecificationsE112 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 Definition
10、sFor terms relating to copper and copperalloys,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 lengthtoler
11、ances.4.General Requirements4.1 The following 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 Packag
12、ing and Package Marking.5.Ordering Information5.1 Include the following information when placing ordersfor product under this specification,as applicable:5.1.1 ASTM designation and year of issue,1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the
13、direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved March 1,2018.Published March 2018.Originallyapproved in 1978.Last previous edition approved in 2016 as B643 12(2016).DOI:10.1520/B0643-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
14、 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 Conshohoc
15、ken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organizati
16、on Technical Barriers to Trade(TBT)Committee.1 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 include 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,5.1.8 Hardness tests,if required,5.1.9 Special tests such as tension test or grain size,ifrequired,5.1.10
