ASTM_B_251_-_10.pdf

Designation:B25110Standard Specification forGeneral Requirements for Wrought Seamless Copper andCopper-Alloy Tube1This standard is issued under the fixed designation B251;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 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 covers a group of general require-ments common to several wrought product specifications.Unless otherwise specified in the purchase order,or in anindividual specification,these general requirements shall applyto copper and copper-alloy tube supplied under SpecificationsB68,B75,B135,B466/B466M,and B743.NOTE1This specification B251 is the inch-pound companion toB251M;therefore,no SI equivalents are presented in the specification.2.Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B68 Specification for Seamless Copper Tube,Bright An-nealedB75 Specification for Seamless Copper TubeB135 Specification for Seamless Brass TubeB153 Test Method for Expansion(Pin Test)of Copper andCopper-Alloy Pipe and TubingB154 Test Method for Mercurous Nitrate Test for CopperAlloysB170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical ConductorMaterialsB428 Test Method for Angle of Twist in Rectangular andSquare Copper and Copper Alloy TubeB466/B466M Specification for Seamless Copper-NickelPipe and TubeB643 Specification for Copper-Beryllium Alloy SeamlessTubeB743 Specification for Seamless Copper Tube in CoilsE3 Guide for Preparation of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys3.Terminology3.1 Definitions:3.1.1 average diameter(for round tubes only)the averageof the maximum and minimum outside diameters,or maximumand minimum inside diameters,whichever is applicable,asdetermined at any one cross section of the tube.3.1.2 coila length of the product wound into a series ofconnected turns.The unqualified term“coil”as applied to tubeusually refers to a bunched coil.3.1.2.1 buncheda coil in which the turns are bunched andheld together such that the cross section of the bunched turnsis approximately circular.3.1.2.2 double layer flata coil in which the product isspirally wound into two connected disk-like layers such thatone layer is on top of the other.(Sometimes called“doublelayer pancake coil”or“double layer spirally wound coil.”)3.1.2.3 level or traverse wounda coil in which the turnsare wound into layers parallel to the axis of the coil such that1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Oct.1,2010.Published November 2010.Originallyapproved in 1951.Last previous edition approved in 2002 as B251 02.DOI:10.1520/B0251-10.2For 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 Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*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 successive turns in a given layer are next to one another.(Sometimes called“helical coil.”)3.1.2.4 level or traverse wound on a reel or spoola coil inwhich the turns are positioned into layers on a reel or spoolparallel to the axis of the reel or spool such that successiveturns in a given layer are next to one another.3.1.2.5 single layer flata coil in which the product isspirally wound into a single disk-like layer.(Sometimes called“pancake coil”or“single layer spirally wound coil.”)3.1.2.6 stagger wounda coil in which the turns are posi-tioned into layers approximately parallel to the axis of the coil,but not necessarily with the fixed regularity of a level ortraverse wound coil.3.1.3 lengthsstraight pieces of the product.3.1.3.1 endsstraight pieces,shorter t