1、Designation:A803/A803M16Standard Specification forSeamless and Welded Ferritic Stainless Steel FeedwaterHeater Tubes1This standard is issued under the fixed designation A803/A803M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the y
2、ear 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.1.Scope*1.1 This specification covers seamless and welded ferriticstainless steel feedwater heater tubes including those bent,
3、ifspecified,into the form of U-tubes for application in tubularfeedwater heaters.1.2 The tubing sizes covered shall be58to 1 in.15.9 to 25.4mm inclusive outside diameter,and average or minimum wallthicknesses of 0.028 in.0.7 mm and heavier.1.3 The values stated in either SI units or inch-pound units
4、are 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.2
5、.Referenced Documents2.1 ASTM Standards:2A480/A480M Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet,and StripA763 Practices for Detecting Susceptibility to IntergranularAttack in Ferritic Stainless SteelsA941 Terminology Relating to Steel,Stainles
6、s Steel,RelatedAlloys,and FerroalloysA1016/A1016M Specification for General Requirements forFerritic Alloy Steel,Austenitic Alloy Steel,and StainlessSteel Tubes3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminology A941.4.Ordering Information4.1 It is the
7、 responsibility of the purchaser to specify allrequirements that are necessary for material under this speci-fication.Such requirements may include,but are not limited to,the following:4.1.1 Quantity(length or number of pieces),4.1.2 Material description(seamless or welded),4.1.3 Dimensions(outside
8、diameter,wall thickness(mini-mum or average wall),and length),4.1.4 Grade(chemical composition)(Table 1),and4.1.5 U-bend requirements,if order specifies bending,U-bend schedules or drawings shall accompany the order.4.2 OptionalRequirementsPurchasershallspecifywhether annealing of the U-bends is req
9、uired or whether tubesare to be hydrotested or air-tested(see 10.6).4.3 Supplementary RequirementsPurchaser shall specifyon this purchase order if material is to be eddy-current tested inaccordance with Supplementary Requirement S1 or S2,and ifspecial test reports are required,under Supplementary Re
10、quire-ment S3,and,4.4 Any additional special requirements.5.General Requirements5.1 Material furnished to this specification shall conform tothe applicable requirements of the latest published edition ofSpecification A1016/A1016M unless otherwise providedherein.6.Materials and Manufacture6.1 The tub
11、ing shall be manufactured by either the seamlessor welded process.6.2 Seamless Tubing:6.2.1 Seamless tubing shall be supplied from a cold finishprocess.Hot finishing as the final sizing process is not allowed.6.3 Welded Tubing:6.3.1 The tube shall be made from flat-rolled steel by anautomatic weldin
12、g process with no addition of filler metal.6.4 Surface contaminants may have detrimental effects onhigh temperature properties or corrosion resistance of tubing.Contamination by copper,lead,mercury,zinc,chlorides,or1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainles
13、s Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.10 on Stainless and Alloy Steel Tubular Products.Current edition approved March 1,2016.Published March 2016.Originallyapproved in 1982.Last previous edition approved in 2012 as A803/A803M12.DOI:10.1520/A0803_A0803M-16.2Fo
14、r 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.*A Summary of Changes section appears at the end of this standardCopy
15、right ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 sulfur may be detrimental to stainless steels.The manufacturershall employ techniques which minimize surface contamina-tion by these elements.7.Cleaning Before Annealing7.1 All lubricants or coa
16、tings used in the manufacture ofstraight-length tube or in the bending shall be removed from allsurfaces prior to any annealing treatments.U-bends on whicha lubricant had been applied to the inside surface duringbending shall have the cleanness of their inside surfaceconfirmed by blowing close-fitting acetone-soaked felt plugsthrough 10%of the tubes of each bend radius.Dry,oil-free airor inert gas shall be used to blow the plugs through the tubes.If the plugs blown through any tube show more tha
