ASTM_A_1098_-_A_1098M_-_16.pdf

Designation:A1098/A1098M16Standard Specification forWelded Austenitic Alloy Steel Boiler,Superheater,Condenser,and Heat Exchanger Tubes with TexturedSurface(s)1This standard is issued under the fixed designation A1098/A1098M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers average or minimum-wallthickness welded tubes made from various grades of austeniticalloy steel materials in which the(1)external tube surface,(2)internal tube surface,or(3)both internal and external tubesurfaces have a textured configuration for improved heattransfer or fluid flow or both.Texture surface(s)are producedby cold forming a specified configuration on the surface(s)ofbase strip material,prior to welding.The produced weldedtextured tubes may be used in boilers,superheaters,condensers,evaporators,heat exchangers,and other similarheat transfer apparatus in diameters up to and including 1.5 in.38 mm for various wall thicknesses up to and including 0.079in.2 mm.1.2 The tubing sizes and thicknesses usually furnished tothis specification are38in.10 mm inside diameter(ID)to 1.5in.38 mm outside diameter and 0.020 to 0.079 in.0.5 to 2mm,inclusive,in wall thickness.Tubing having other dimen-sions may be furnished provided such tubes comply with allother requirements of this specification.1.3 Optional supplementary requirements are provided and,when one or more of these are desired,each shall be so statedin the order.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.The inch-pound units shall apply unless the“M”designation of this specification is specified in the order.1.5 The following safety hazards statement pertains only tothe test method and the Supplementary Requirements of thisspecification.A specific warning statement is given in theSupplementary Requirements.This standard does not purportto address all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A249/A249M Specification for Welded Austenitic SteelBoiler,Superheater,Heat-Exchanger,and CondenserTubesA262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA480/A480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet,and StripA941 Terminology Relating to Steel,Stainless Steel,RelatedAlloys,and FerroalloysA1016/A1016M Specification for General Requirements forFerritic Alloy Steel,Austenitic Alloy Steel,and StainlessSteel TubesE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)2.2 ASME Standard:3Boiler and Pressure Vessel Code Section VIII Para UW-512.3 SAE Standards:4SAE J1086 Practice for Numbering Metals and Alloys(UNS)1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.10 on Stainless and Alloy Steel Tubular Products.Current edition approved Nov.15,2016.Published January 2017.DOI:10.1520/A1098_A1098M-16.2For 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.3Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.4Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096,http:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Terminology3.1 Fordefinitionsofgeneraltermsusedinthisspecification,refer to Terminology A941.3.2 Definitions of Terms Specific to This Standard:3.2.1 plain cylindrical ring gauges,na cylindrical metalring whose inside diameter is furnished to gauge tolerance.3.2.2 plain ending,nportion of the tube that has nosurface texture.3.2.3 primary character,nlargest texture impressed onmaterial.3.2.4 primary pattern,ncombination of primary charac-ters.3.2.5 secondary character,nfinecut texture impressed onmaterial.3.2.6 secondary pattern,ncombination of secondary char-acters.3.2.7 textured surface,nimpress