1、Designation:B251M10Standard Specification forGeneral Requirements for Wrought Seamless Copper andCopper-Alloy Tube(Metric)1This standard is issued under the fixed designation B251M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、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.1.Scope*1.1 This specification covers a group of general require-ments common to several wrought product specifications.Unless
3、 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,and B466/B466M.NOTE1This specification is the SI companion to B251.2.Referenced Documents2.1 The following docum
4、ents 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
5、 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 Re
6、ctangular andSquare Copper and Copper Alloy TubeB466/B466M Specification for Seamless Copper-NickelPipe and TubeB643 Specification for Copper-Beryllium Alloy SeamlessTubeE3 Guide for Preparation of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic MaterialsE18 Test Methods for
7、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)(
8、Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478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 ave
9、rageof 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 bu
10、nched 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 oth
11、er.(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 thatsuccessive turns in a given layer are next to one another.(Sometimes called“helical coil.”)3.1.2
12、.4 level or traverse wound on a reel or spoola coil inwhich the turns are positioned into layers on a reel or spool1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloysand is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition appr
13、oved Oct.1,2010.Published November 2010.Originallyapproved in 1979.Last previous edition approved in 2003 as B251M 97(2003).DOI:10.1520/B0251M-10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards vol
14、ume 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 Con
15、shohocken,PA 19428-2959.United States1 parallel 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 calleda“pancake coil”or“single layer spir
16、ally 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 than the nominallength,left over after cutting the product into mill lengths,stock lengths,or specific lengths.They are subject to minimumlength and maximum weight requirements.3.1.3.2 millstraight len
