1、Designation:B37212aStandard Specification forSeamless Copper and Copper-Alloy Rectangular WaveguideTube1This standard is issued under the fixed designation B372;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revisio
2、n.A number 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 Department of Defense.1.Scope*1.1 This specification establishes the requirements for s
3、eam-less copper and copper-alloy rectangular tube intended for useas transmission lines in electronic equipment.Five types ofmaterial are specified having the following nominal composi-tions:2Copper orCopper AlloyUNS2No.PreviouslyUsed DesignationNominal Composition,%CopperZincPhos-phorusC10100Copper
4、,Type OFEA99.99B.C10200Copper,Type OFA99.95B.C10300Copper,Type OFXLPA99.95B.0.003C12000Copper,Type DLPA99.90B.0.008C22000Commercialbronze,90%9010.ATypes OF,OFE,OFXLP,and DLP are described in Classification B224.BMinimum copper percentage.1.2 The values stated in inch-pound units are to be regardedas
5、 standard.The values given in parentheses are mathematicalconversions to SI units which are provided for informationonly and are not considered standard.2.Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent
6、 referenced herein:2.2 ASTM Standards:3B170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical ConductorMaterialsB224 Classification of CoppersB428 Test Method for Angle of Twist in Rectangular andSquare Copper and Copper Alloy TubeB577 Tes
7、t Methods for Detection of Cuprous Oxide(Hydro-gen Embrittlement Susceptibility)in CopperB846 Terminology for Copper and Copper AlloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Tes
8、t Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for Chemical An
9、alysis of Copper Alloys2.3 Other Standard:ANSI B46.1 Surface Roughness,Waviness,and Lay53.Terminology3.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.4.Ordering Information4.1 Include the following specified choices when placingorders for products under this
10、specification,as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper or copper alloy UNS No.designation,4.1.3 Outer and inner rectangular dimensions,dimensionaltolerances(Section 10),4.1.4 Length(10.6),4.1.5 Total length of each size,1This specification is under the jurisdiction ofASTM
11、Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Oct.1,2012.Published May 2012.Originally approvedin 1961.Last previous edition approved in 2012 as B372 12.DOI:10.1520/B0372-12A.2The UNS system for copper and co
12、pper alloys is a simple expansion of theformer standard designation system accomplished by the addition of a prefix“C”and a suffix“00.”The suffix can be used to accommodate composition variations ofthe base alloy.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custo
13、mer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from American National Standards Institute(ANSI),25 W.43rd
14、 St.,4th Floor,New York,NY 10036.*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 States1 4.2 The following options are available but may not beincluded unless specified at the time
15、of placing of the orderwhen required:4.2.1 Rockwell(Section 8.1),4.2.2 Electrical resistivity test(Section 7),4.2.3 Embrittlement test(Section 9.2),4.2.4 Special finish(Section 11.2),4.2.5 Heat Identification(Section 13.1.1.4),4.2.6 Certification(Section 18),4.2.7 Test Report(Section 19),and4.2.8 Sp
16、ecial packing(Section 20).5.Materials and Manufacture5.1 Materials:5.1.1 The material of manufacture shall be of such qualityand purity to be suitable for processing into the productsprescribed herein.5.2 Manufacture:5.2.1 The product shall be manufactured by such hotworking,cold-working and annealing process as to produce auniform wrought structure in the finished product.5.2.2 The product shall be hot or cold worked to the finishedsize,and subsequently annealed when required,to meet thetemper