1、Designation:B12917Standard Specification forCartridge Brass Cartridge Case Cups1This standard is issued under the fixed designation B129;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 parenthese
2、s 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 an-nealed cartridge brass cups produced of Copper Alloy UNSNo.C26000 for processing into cartridge cases o
3、f the follow-ing types:1.1.1 Type I,for small arms cartridge case cups,and1.1.2 Type II,for artillery cartridge case cups.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard,except for grain size,which is given in SIunits.The values given in parentheses are mathematicalconve
4、rsions to SI units,which are provided for informationonly and are not considered standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standard
5、s,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2B601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE3 Guide for Pre
6、paration of Metallographic SpecimensE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods
7、for Chemical Analysis of Copper Alloys3.Terminology3.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 cup(cupping),na shallow cylindrical shell closed atone end,normally intended for further fabrication,f
8、ormedfrom a blank.4.Ordering Information4.1 Include the following specified choices when placingorders for product under this specification,as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Type(Section 1),4.1.3 Grain size(Section 8),4.1.4 Dimensions and tolerances(Section 9),4.1.5 Drawin
9、g number to which order applies(Section 9).4.2 The following options are available but may not beincluded unless specified at the time of placing of the orderwhen required:4.2.1 Grain size analysis of the base(Section 14),4.2.2 Source inspection(Section 16),4.2.3 Certification,4.2.4 Mill Test Report
10、,and4.2.5 If product is purchased for agencies of the U.S.Government(see the Supplementary Requirements section ofthis specification for additional requirements,if specified).5.Materials and Manufacture5.1 Materials:5.1.1 The material of manufacture shall be annealed plate,sheet,strip,or disks of wr
11、ought Copper Alloy UNS No.C26000 processed to produce even-topped cups.5.2 Manufacture:5.2.1 The product shall be manufactured by such blankingand cupping to meet the cup dimensions specified,and subse-quently annealed.The annealed cups shall be pickled,washed,and dried.6.Chemical Composition6.1 The
12、 material shall conform to the chemical compositionrequirements in Table 1.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet,and Strip.Current edition approved April 1,2017.Published Apr
13、il 2017.Originallyapproved in 1940.Last previous edition approved in 2012 as B129-12.DOI:10.1520/B0129-17.2For 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 D
14、ocument 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 Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized
15、 principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.2 These composition limits do not preclude the presenceof other eleme
16、nts.By agreement between the manufacturer andpurchaser,limits may be established and analysis required forunnamed elements6.3 Because zinc is listed as“remainder,”either copper orzinc may be taken as the difference between the sum of resultsof all other elements determined and 100%.When all elementsin Table 1 are determined,the sum of results shall be 99.7%min.7.Temper7.1 The standard tempers for products described in thisspecification are given in Table 2.7.1.1 Annealed tempers OS080 and OS110.