TM_A_249_
_A_249M_
_16a
Designation:A249/A249M16aUsed in USDOE-NE StandardsStandard Specification forWelded Austenitic Steel Boiler,Superheater,Heat-Exchanger,and Condenser Tubes1This standard is issued under the fixed designation A249/A249M;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification2covers nominal-wall-thicknesswelded tubes and heavily cold worked welded tubes made fromthe austenitic steels listed in Table 1,with various gradesintended for such use as boiler,superheater,heat exchanger,orcondenser tubes.1.2 Grades TP304H,TP309H,TP309HCb,TP310H,TP310HCb,TP316H,TP321H,TP347H,and TP348H aremodifications of Grades TP304,TP309S,TP309Cb,TP310S,TP310Cb,TP316,TP321,TP347,and TP348,and are intendedfor high-temperature service such as for superheaters andreheaters.1.3 The tubing sizes and thicknesses usually furnished tothis specification are18in.3.2 mm in inside diameter to 12 in.304.8 mm in outside diameter and 0.015 to 0.320 in.0.4 to8.1 mm,inclusive,in wall thickness.Tubing having otherdimensions may be furnished,provided such tubes complywith all other requirements of this specification.1.4 Mechanical property requirements do not apply totubing smaller than18in.3.2 mm in inside diameter or 0.015in.0.4 mm in thickness.1.5 Optional supplementary requirements are provided and,when one or more of these are desired,each shall be so statedin the order.1.6 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.1.7 The following safety hazards caveat pertains only to thetest method described in the Supplementary Requirements ofthis specification.This standard does not purport to address allof the safety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.A specific warningstatement is given in Supplementary Requirement S7,NoteS7.1.2.Referenced Documents2.1 ASTM Standards:3A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA480/A480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet,and StripA1016/A1016M Specification for General Requirements forFerritic Alloy Steel,Austenitic Alloy Steel,and StainlessSteel TubesE112 Test Methods for Determining Average Grain SizeE213 Practice for Ultrasonic Testing of Metal Pipe andTubingE273 Practice for Ultrasonic Testing of the Weld Zone ofWelded Pipe and TubingE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)2.2 ASME Boiler and Pressure Vessel Code:Section VIII42.3 Other Standard:SAE J1086 Practice for Numbering Metals and Alloys(UNS)51This 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 Sept.1,2016.Published September 2016.Originallyapproved in 1941.Last previous edition approved in 2016 as A249/A249M 16.DOI:10.1520/A0249_A0249M-16A.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-249 in Section II of that Code.3For 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.4Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.org.5Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,http:/www.sae.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 TABLE 1 Chemical Requirements,%AGradeComposition,%UNSDesignationBCarbonManganesePhosphorousSulfurSiliconChromiumNickelMolybdenumNitrogenCCopperOtherTP 201S201000.155.507.50.0600.0301.0016.018.03.55.5.0.25.TP 201LNS201530.036.47.50.0450.0150.7516.017.54.05.0.0.100.251.00.TP 202S202000.157.510.00.0600.0301.0017.019.04.06.0.0.25.TPXM-19S209100.064.06.00.0450.0301.0020.523.511