ASTM_B_903_-_15.pdf

Designation:B90315Standard Specification forSeamless Copper Heat Exchanger Tubes With InternalEnhancement1This standard is issued under the fixed designation B903;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.1.Scope*1.1 This specification establishes the requirements forseamless,internally enhanced copper tube,in straight lengthsor coils,suitable for use in refrigeration and air-conditioningproducts or other heat exchangers.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.3 Tubes for this application are manufactured from thefollowing copper:Copper UNS No.Type of MetalC12200Phosphorized,high residual phosphorus(DHP)1.4 The following pertains to the test method described in15.2.4 of this specification:This standard does not purport toaddress all the safety concerns,if any,associated with its use.It is the responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B153 Test Method for Expansion(Pin Test)of Copper andCopper-Alloy Pipe and TubingB251 Specification for General Requirements for WroughtSeamless Copper and Copper-Alloy TubeB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing 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in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE243 Practice for Electromagnetic(Eddy Current)Examina-tion of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Composition3.General Requirements3.1 The following sections of Specification B251 constitutea part of this specification:3.1.1 Workmanship,Finish,and Appearance.3.1.2 Sampling.3.1.3 Number of Tests and Retests.3.1.4 Specimen Preparation.3.2 In addition,when a section with a title identical to thosereferenced in 3.1 appears in this specification,it containsadditional information which supplements those appearing inSpecification B251.In case of conflict,this specification shallprevail.4.Terminology4.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.4.2 Definitions of Terms Specific to This Standard:4.2.1 bottom wall,nthe wall thickness measured from thebase of the enhancement to the outside surface.4.2.2 enhancement,adja geometrical feature intentionallyformed on a tube I.D.surface to improve heat transfer.1This 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.1,2015.Published October 2015.Originallyapproved in 2000.Last previous edition approved in 2010 as B903-10.DOI:10.1520/B0903-15.2For 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 5.Ordering Information5.1 Include the following specified choices when placingorders for products under this specification,as applicable:5.1.1 ASTM Designation number and the year of issue.5.1.2 Temper(Section 8).5.1.3 Length,diameter,wall thickness,and enhancementdimensions.Configuration of the enhanced surface shall be asagreed upon between the manufacturer,or supplier,and pur-chaser.5.1.4 How furnished:straight lengths or coils.5.1.5 Quantitytotal weight or total length or number ofpieces of each size.5.2 The following options are available,but may not beincluded unless specified at the time of placing of the orderwhen required:5.2.1 Certification,if required(see Section 19).5.2.2 Mill test report,if required(see Section 20).6.Materials and Manufacture6.1 Material:6.1.1 The material of manufacture shall be cast billet,bar,tube,or so forth of Copper