ASTM_B_956_-_B_956M_-_10e1.pdf

Designation:B956/B956M101Standard Specification forWelded Copper and Copper-Alloy Condenser and HeatExchanger Tubes with Integral Fins1This standard is issued under the fixed designation B956/B956M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEDesignation was corrected editorially in October 2013.1.Scope*1.1 This specification establishes the requirements for heatexchanger tubes manufactured from forge-welded copper andcopper alloy tubing in straight lengths on which the external orinternal surface,or both,has been modified by cold formingprocess to produce an integral enhanced surface for improvedheat transfer.1.2 UnitsThe values stated in either inch-pounds units orSI units are to be regarded separately as the standard.Thevalues stated in each system are not exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems could result innon-conformance with the specification.1.2.1 Within the text,the SI units are shown in brackets.1.3 The tubes are typically used in surface condensers,evaporators,and heat exchangers.1.4 The product shall be produced of the following coppersor copper alloys,as specified in the ordering information.Copper or Copper AlloyUNS No.Type of MetalC12000ADLP Phosphorized,low residual phosphorusC12200ADHP Phosphorized,high residual phosphorusC19200Phosphorized,1%ironC19400Copper-Iron AlloyC23000Red BrassC44300Admiralty,arsenicalC44400Admiralty,antimonialC44500Admiralty,phosphorizedC68700Aluminum BrassC7040095-5 Copper-NickelC7060090-10 Copper-NickelC7062090-10 Copper-Nickel(Modified for Welding)C7100080-20 Copper-NickelC7150070-30 Copper-NickelC7152070-30 Copper-Nickel(Modified for Welding)C72200Copper-NickelACopper UNS Nos.C12000,and C12200 are classified in Classification B224.NOTE1Designations listed in Classification B224.1.5 The following safety hazard caveat pertains only to thetest methods described in this specification.This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:2B153 Test Method for Expansion(Pin Test)of Copper andCopper-Alloy Pipe and TubingB154 Test Method for Mercurous Nitrate Test for CopperAlloysB224 Classification of CoppersB543 Specification for Welded Copper and Copper-AlloyHeat Exchanger TubeB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysB858 Test Method forAmmonia Vapor Test for DeterminingSusceptibility to Stress Corrosion Cracking in CopperAlloysE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE54 Test Methods for Chemical Analysis of Special Brassesand Bronzes(Withdrawn 2002)3E62 Test Methods for Chemical Analysis of Copper and1This 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 April 1,2010.Published May 2010.Originallyapproved in 2007.Last previous edition approved in 2007 as B956 072.DOI:10.1520/B0956_B0956M-10E01.2For 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 CopperAlloys(Photometric Methods)(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE118 Test Methods for Chemical Analysis of Copper-Chromium Alloys(Withdrawn 2010)3E243 Practice for Electromagnetic(Eddy Current)Examina-tion of Copper and Copper-Alloy TubesE255 Practice for Sampling Copper and Copper Alloys 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.Terminology3.1 For the definitions of terms related to copper and copperalloys,refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 enhanced tubetube having a series of metallic ribson the outside or inside surface,or both,either parallel to thelongitudinal axis or circ