1、Designation:B121/B121M16Standard Specification forLeaded Brass Plate,Sheet,Strip,and Rolled Bar1This standard is issued under the fixed designation B121/B121M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.
2、A number in parentheses indicates the year of last reapproval.A superscript 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 the requirements fo
3、rleaded brass plate,sheet,strip,and rolled bar.The followingalloys are covered:Nominal Composition,%Copper AlloyPreviously UsedUNS No.2DesignationCopperZincLeadIronC33500263.536.00.5.C34000363.535.51.0.C34200563.534.52.0.C35000.61.537.41.1.C35300461.536.71.8.C35600661.536.02.5.1.2 UnitsValues stated
4、 in either inch-pound units or SIunits are to be regarded separately as standard.Within the text,SI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result i
5、n non-conformance with thestandard.2.Referenced Documents2.1 ASTM Standards:3B248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate,Sheet,Strip,and RolledBarB248M Specification for General Requirements for WroughtCopper and Copper-Alloy Plate,Sheet,Strip,and RolledBar(M
6、etric)B601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper All
7、oys forthe Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper AlloysE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)3.General Requirements3.1 The following sections of Specifications B248 orB248M constitute a part of this specifica
8、tion:3.1.1 Terminology3.1.2 Materials and Manufacture3.1.3 Workmanship,Finish,and Appearance3.1.4 Samplingexcept for chemical analysis3.1.5 Number of Tests and Retests3.1.6 Specimen Preparation3.1.7 Test Methodsexcept for chemical analysis3.1.8 Significance of Numerical Limits3.1.9 Inspection3.1.10
9、Rejection and Rehearing3.1.11 Certification3.1.12 Test Reports3.1.13 Packaging and Package Marking3.1.14 Supplementary Requirements3.2 In addition,when a section with a title identical to thatreferenced in 3.1,above,appears in this specification,itcontains additional requirements which supplement th
10、ose ap-pearing in Specifications B248 or B248M.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 1,2016.Published April 2016.Originallyapproved i
11、n 1939.Last previous edition approved in 2011 as B121/B121M 11.DOI:10.1520/B0121_B0121M-16.2The UNS system for copper and copper alloys(see Practice E527)is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix“C”and suffix“00.”The suffix can be used to
12、accommodate compositionvariations of the base alloy3For 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 page onthe ASTM website.*A Summary of C
13、hanges section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Terminology4.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.5.Ordering Information5.1 Include the
14、 following specified choices when placingorders for product under this specification,as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS No.designation,5.1.3 Temper(Section 8),5.1.4 Dimensions:thickness and width(11.1.1 and 11.1.2),5.1.5 How furnished:straight lengths or co
15、ils,5.1.6 Quantitytotal weight or total length or number ofpieces of each size,5.1.7 Type of edge,if required(slit,sheared,sawed,squarecorners,round corners,rounded edges,or full-rounded edges)(11.1.5),5.1.8 Length(11.1.3),and5.1.9 Intended application.5.2 The following options are available but may
16、 not beincluded unless specified at the time of placing the order whenrequired:5.2.1 Heat identification or traceability details.5.2.2 Certification,5.2.3 Mill Test Report,5.2.4 If product is purchased for agencies of the U.S.government(see the Supplementary Requirements section ofSpecifications B248 or B248M for additional requirements,ifspecified).6.Materials and Manufacture6.1 Materials:6.1.1 The material of manufacture shall be a form(cast bar,cake,slab,et cetera)of Copper Alloy UNS No.C3350
