1、Designation:A943/A943M01(Reapproved 2014)Standard Specification forSpray-Formed Seamless Austenitic Stainless Steel Pipes1This standard is issued under the fixed designation A943/A943M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,
2、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.1.Scope1.1 This specification covers spray-formed seamless auste-nitic stainless steel pipe intended for high-temperature
3、 andgeneral corrosive service.1.2 Grades TP304H,TP309H,TP309HCb,TP310H,TP310HCb,TP316H,TP321H,TP347H,and TP348H aremodifications of Grades TP304,TP309Cb,TP309S,TP310Cb,TP310S,TP316,TP321,TP347,and TP348,and are intendedfor high-temperature service.1.3 Optional supplementary requirements are provided
4、 forpipe where a greater degree of testing is desired.Thesesupplementary requirements call for additional tests to be madeand,when desired,one or more of these may be specified in theorder.1.4 Appendix X1 lists the dimensions of seamless stainlesssteel pipe as shown in ANSI B36.19.Pipe having otherd
5、imensions may be furnished provided such pipe complieswith all other requirements of this specification.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be use
6、d independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5.1 Within the text,the SI units are shown in brackets.1.5.2 The inch-pound units shall apply unless the“M”designation of this specification is specified in the order.NOTE1The dimension
7、less designator NPS(nominal pipe size)hasbeen substituted in this standard for such traditional terms as“nominaldiameter,”“size,”and“nominal size.”2.Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA450/A450M Spe
8、cification for General Requirements forCarbon and Low Alloy Steel TubesA941 Terminology Relating to Steel,Stainless Steel,RelatedAlloys,and FerroalloysA999/A999M Specification for General Requirements forAlloy and Stainless Steel PipeE112 Test Methods for Determining Average Grain SizeE381 Method of
9、 Macroetch Testing Steel Bars,Billets,Blooms,and ForgingsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)2.2 ANSI/ASME Standards:3B1.20.1 Pipe Threads,General PurposeB36.10 Welded and Seamless Wrought Steel PipeB36.19 Stainless Steel Pipe2.3 Other Standard:4SAE J1086
10、 Practice for Numbering Metals and Alloys(UNS)3.Terminology3.1 For definitions of terms used in this specification,referto Terminology A941.3.2 Definitions of Terms Specific to This Standard:3.2.1 sprayformeddenotes the fabrication of differentshapes of a metallic material by deposition of a spray,c
11、onsisting of droplets,solid particles,and particles that arepartially solid,onto a moving substrate.3.2.1.1 DiscussionThe spray is produced by gas atomiza-tion of the liquid metal or alloy.On impingement with thesubstrate,the species of the spray consolidate and solidifycompletely to produce a produ
12、ct that is essentially free ofporosity.The metallurgical characteristics of the spray-formedproduct are controlled primarily by the thermal condition of thespray,and that of the surface of the metallic deposit formed onthe substrate.1This specification is under the jurisdiction of ASTM Committee A01
13、 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 March 1,2014.Published March 2014.Originallyapproved in 1995.Last previous edition approved in 2009 as A943/A943M 01(2009).DOI:10
14、.1520/A0943_A0943M-01R14.2For 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 National Standar
15、ds Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyrigh
16、t by ASTM Intl(all rights reserved);4.Ordering Information4.1 Orders for material to this specification should includethe following,as required,to describe the desired materialadequately:4.1.1 Quantity(feet,centimetres,or number of lengths),4.1.2 Name of material(austenitic steel pipe),4.1.3 Grade(Table 1),TABLE 1 Chemical RequirementsGradeUNSDesigna-tionAComposition,%ColumbiumplusTantalumComposition,%Carbon,maxBManga-nese,maxBPhospho-rus,maxSulfur,maxSilicon,maxBNickelChromiumMolyb-denumTitaniu
