ASME_SA312-2004.pdf

SPECIFICATION FOR SEAMLESS AND WELDEDAUSTENITIC STAINLESS STEEL PIPESSA-312/SA-312M(Identical with ASTM Specification A312/A 312M-0la except for the deletion of 5.2.revision to 6.2 to addHGrade heat treatment04requirements and editorial differences in 7.1 and Table 1 and an editorial correction to the Cr and Ni percent chemical composition for UNSA05S31002 in Table 1.)1.Scopemay be furnished provided such pipe complies with all1.1 This specification covers seamless,straight-seamother requirements of this specification.welded,and heavily cold worked welded austenitic stain-1.5 Grades TP321 and TP321H have lower strengthless steel pipe intended for high-temperature and generalrequirements for pipe manufactured by the seamless pro-corrosive service.cess in nominal wall thicknesses greater than in.9.5mm.NOTE 1-When the impact test criterion for a low-temperature servicewould be 15 ft-lbf 20 Jenergy absorption or 15 mils 0.38 mmlateral1.6 The values stated in either inch-pound units orexpansion.some of the austenitic stainless steel grades covered by thisSI units are to be regarded separately as standard.Withinspecification are accepted by certain pressure vessel or piping codesthe text,the SI units are shown in brackets.The valueswithout the necessity of making the actual test.For example.GradesTP304.TP304L,and TP347 are accepted by the ASME Pressure Vesselstated in each system are not exact equivalents;therefore,Code.Section VIII Division 1,and by the Chemical Plant and Refineryeach system must be used independently of the other.Piping Code,ANSI B31.3.for service at temperatures as low asCombining values from the two systems may result in-425F-250Cwithout qualification by impact tests.Other AISI stain-nonconformance with the specification.The inch-poundless steel grades are usually accepted for service temperatures as lowunits shall apply unless theMdesignation of this speci-as-325F-200Cwithout impact testing.Impact testing may,undercertain circumstances,be required.For example,materials with chro-fication is specified in the order.mium or nickel content outside the AlSI ranges,and for material withNOTE 2-The dimensionless designator NPS(nominal pipe size)hascarbon content exceeding 0.10%,are required to be impact tested underbeen substituted in this standard for such traditional terms asnominalthe rules of ASME Section VIlI Division I when service temperaturesdiameter,.size,”and“nominal size.are lower than-50F-45C.1.2 Grades TP304H.TP309H.TP309HCb.TP310H.2.Referenced DocumentsTP310HCb,TP316H,TP321H,TP347H,and TP348H2.1 ASTM Standards:are modifications of Grades TP304,TP309Cb,TP309S,A 262 Practices for Detecting Susceptibility to Intergran-TP310Cb,TP310S.TP316,TP321,TP347,and TP348.ular Attack in Austenitic Stainless Steelsand are intended for high-temperature service.A 370 Test Methods and Definitions for Mechanical Test-1.3 Optional supplementary requirements are pro-ing of Steel Productsvided for pipe where a greater degree of testing is desired.A 450/A 450M Specification for General RequirementsThese supplementary requirements call for additionalfor Carbon,Ferritic Alloy,and Austenitic Alloy SteelTubestests to be made and,when desired,one or more of thesemay be specified in the order.A 941 Terminology Relating to Steel,Stainless Steel,Related Alloys,and Ferroalloys1.4 Table X1.1 lists the standardized dimensions ofA 999/A 999M Specification for General Requirementswelded and seamless stainless steel pipe as shown infor Alloy and Stainless Steel PipeANSI B36.19.These dimensions are also applicable toE 112 Test Methods for Determining the Averageheavily cold worked pipe.Pipe having other dimensionsGrain Size513-Transalta Utiities5910033100No roproduction or notworking permitled without liconso from IHS500802w0e918C918SA-312/SA-312M2004 SECTION IIE381 Method of Macroetch Testing Steel Bars,Billets,4.1.10 Specification number,andBlooms,and Forgings4.1.11 Special requirements or any supplementaryE 527 Practice for Numbering Metals and Alloys(UNS)requirements selected,or both.2.2 ANSI Standards:B1.20.1 Pipe Threads,General PurposeB36.10 Welded and Seamless Wrought Steel Pipe5.General RequirementsB36.19 Stainless Steel Pipe5.1 Material furnished under this specification shallconform to the applicable requirements of the current2.3 ASME Standard:edition of Specification A 999/A 999M unless otherwiseASME Boiler and Pressure Vessel Code:Section VIIIprovided herein.2.4 AWS Standard:5.2 DELETEDA5.9 Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Electrodes6.Materials and Manufacture2.5 Other Standard:SAE J1086 Practice for Numbering Metals and Alloys6.1 Manufacture:(UNS)6.1.1 The pipe shall be manufactured by one of the2.6 Other Standard:following processes:SNT-TC-1A Personnel Qualification and Certification in6.1.2 Seamless(SML)pipe shall be made by a pro-Nondestructive Testingcess that does not involve welding at any stage of pro-duction.6.1.3 Welded(WLD)pipe shall be made using an3.Terminologyautomatic welding process with no addition of filler metal3.1 Definitions:during the welding process.3.1.1 The definitions in Specification6.1.4 Heavily cold-worked(HCW)pipe shall beA 999/A 999M and Terminology A 941 are applicablemade by applying cold working of not less than 35%to this specification.reduction in thickness of both wall and weld to a weldedpipe prior to the final anneal.No filler shall be used inmaking the weld.Prior to cold working,the weld shall4.Ordering Informationbe 100%radiographically inspected in accordance with4.1 Orders for material to this specification shouldthe requirements of ASME Boiler and Pressure Vesselinclude the following,as required,to describe the desiredCode,Section VIII,Division 1,latest revision,Paragraphmaterial adequately:UW-51.4.1.1 Quantity(feet,centimetres,or number of6.1.5 Welded pipe and HCW pipe of NPS 14 andsmaller shall have a single longitudinal weld.Weldedlengths),pipe and HCW pipe of a size larger than NPS 14 shall4.1.2 Name of material(austenitic steel pipe),have a single longitudinal weld or shall be produced by4.1.3 Process(seamless(SML)or welded(WLD)forming and welding two longitudinal sections of flator heavily cold worked(HCW),stock when approved by the purchaser.All weld tests,4.1.4 Grade(Table 1),examinations,inspections,or treatments shall be per-formed on each weld seam.4.1.5 Size(NPS or outside diameter and schedulenumber or average wall thickness),6.1.6 At the option of the manufacturer,pipe shallbe either hot finished or cold finished.4.1.6 Length(specific or random)(Section 13).6.1.7 The pipe shall be free of scale and contaminat-4.1.7 End finish(Section on Ends of Specificationing exogenous iron particles.Pickling,blasting,or surfaceA999/A999M.finishing is not mandatory when pipe is bright annealed.4.1.8 Optional requirements(product analysis,seeThe purchaser is permitted to require that a passivatingSection 8;hydrostatic or nondestructive electric test,seetreatment be applied to the finished pipe.Section 12),6.2 Heat Treatment-All pipe shall be furnished in4.1.9 Test report required(Certification Section ofthe heat-treated condition in accordance with the require-Specification A 999/A 999M),ments of Table 2.Other than for Grades S33228,S30815,514Eow曲AS/ENo roproduction or notworking permitled without liconso from IHSN 000MT-Transalta Utilities5910033100PART A-FERROUS MATERIAL SPECIFICATIONSSA-312/SA-312MS31272 and the Hgrades,seamless pipe immediatelyweight in Specification A 999/A 999M,the wall thick-following hot forming may be individually quenched inness for seamless and welded pipe at any point shall bewater or rapidly cooled by other means,provided thatwithin the tolerances specified in Table 3,except that forthe temperature of the pipes after hot forming is not lesswelded pipe the weld area shall not be limited by thethan the minimum specified solution treatment tempera-Overtolerance.The wall thickness and outside diameterture.For H Grades,as well as Grades S33228,S30815,for inspection for compliance with this requirement forand S31272,the pipes shall be reheated to the specifiedpipe ordered by NPS and schedule number is shown insolution treatment temperature for the required timeTable X1.1.before quenching.6.3 Grain Size:10.Tensile Requirements6.3.1 The grain size of Grade UNS S32615,asdetermined in accordance with Test Methods E 112,shall10.1 The tensile properties of the material shall con-be No.3 or finer.form to the requirements prescribed in Table 4.6.3.2 The grain size of grades TP309H.TP309HCb.TP310H and TP310HCb,as determined in accordance11.Mechanical Tests,Grain Size Determinations,with Test Methods E 112.shall be No.6 or coarser.and Weld Decay Tests Required6.3.3 The grain size of grades 304H,316H,321H,11.1 Transverse or Longitudinal Tension Test-One347H,and 348H,as determined in accordance with Testtension test shall be made on a specimen for lots of notMethods E 112.shall be No.7 or coarser.more than 100 pipes.Tension tests shall be made onspecimens from two tubes for lots of more than 100 pipes.7.Chemical CompositionNOTE 3-The term lot,for mechanical tests,applies to all pipe ofthe same diameter and wall thickness(or schedule)which are produced7.1 The steel shall conform to the requirements as tofrom the same heat of steel and subjected to the same finishing treatment:chemical composition prescribed in Table 1.(/in a continuous heat-treatment furnace,(2)in a batch-type heat-treatment furnace,equipped with recording pyrometers and automati-cally controlled within a 50F 30Crange,or(3)by direct quenching8.Product Analysisafter hot forming.the larger of:(a)Each 200 ft 60 mor fractionthereof or,(b)That pipe heat treated in the same batch furnace charge.8.1 At the request of the purchaser,an analysis ofone billet or one length of flat-rolled stock from each11.2 Flattening Test-For material heat treated in aheat,or two pipes from each lot shall be made by thebatch-type furnace,flattening tests shall be made on 5%manufacturer.A lot of pipe shall consist of the followingof the pipe from each heat-treated lot.For material heatnumber of lengths of the same size and wall thicknesstreated by the continuous process,or by direct quenchingfrom any one heat of steel:after hot forming this test shall be made on a sufficientnumber of pipe to constitute 5 of the lot,but in noNPS DesignatorLengths of Pipe in Lotcase less than two lengths of pipe.Under 2400 or fraction thereof2t05200 or fraction thereof11.2.1 For welded pipe a transverse-guided face6 and over100 or fraction thereofbend test of the weld may be conducted instead of aflattening test in accordance with the method outlined in8.2 The results of these analyses shall be reported tothe steel tubular product supplement of Test Methods andthe purchaser or the purchasers representative,and shallDefinitions A 370.The ductility of the weld shall beconform to the requirements specified in Section 7.considered acceptable when there is no evidence of cracks8.3 If the analysis of one of the tests specified in 8.1in the weld or between the weld and the base metal afterdoes not conform to the requirements specified in Sectionbending.Test specimens from 5 of the lot shall be7,an analysis of each billet or pipe from the same heattaken from the pipe or test plates of the same materialor lot may be made,and all billets or pipe conformingas the pipe,the test plates being attached to the end ofto the requirements shall be accepted.the cylinder and welded as a prolongation of the pipelongitudinal seam.11.3 Grain Size Grain size determinations on9.Permitted Variations in Wall ThicknessGrades TP309H.TP309HCb,TP310H.TP310HCb,and9.1 In addition to the implicit limitation of wall thick-UNS S32615 shall be made on the same number of tubesness for seamless pipe imposed by the limitation onas prescribed for the flattening test.515No roproduction or notworking permitled without liconso from IHS500802w0e918C918-Transalta Utiities5910033100SA-312/SA-312M2004 SECTION II11.4 HCW pipe shall be capable of passing the weldbe removed by grinding.provided the wall thicknessesdecay tests listed in Supplementary S9 with a weld metalare not decreased to less than that permitted in Sectionto base metal loss ratio of 0.90 to 1.1.The test is not9 of Specification A 999/A 999M.required to be performed unless S9 is specified in thepurchase order.15.Repair by Welding12.Hydrostatic or Nondestructive Electric Test12.1 Each pipe shall be subjected to the nondestruc-15.1 For welded pipe whose diameter equals orexceeds NPS 6,and whose nominal wall thickness equalstive electric test or the hydrostatic test.The type of testto be used shall be at the option of the manufacturer,or exceeds 0.200,weld repairs made with the additionunless otherwise specified in the purchase order.of compatible filler metal may be made to the weld seamwith the same procedures specified for plate defects in12.2 The hydrostatic test shall be in accordance withthe section on Repair by Welding of SpecificationSpecification A 999/A 999M,unless specificallyA999/A999Mexempted under the provisions of 12.3.12.3 For pipe whose dimensions equal or exceed NPS15.2 Weld repairs of the weld seam shall not exceed20%of the seam length.10,the purchaser,with the agreement of the manufacturer.may waive the hydrostatic test requirement when in lieu15.3 Weld repairs shall be made only with the gasof such test the purchaser performs a system test.Eachtungsten-arc welding process using the same classifica-length of pipe furnished without the completed manufac-tion of bare filler rod qualified to the most current AWSturers hydrostatic test shall include with the mandatorySpecification A5.9 as the grade of stainless steel pipemarkings the letters NH.being repaired and as shown in Table 5.Alternatively,12.4 Nondestructive Electric Test:subject to approval by the purchaser,weld repairs shallNondestructive electric tests shall be in accordancebe made only with the gas tungsten-arc welding processwith Specification A 999/A 999M.using a filler metal more highly alloyed than the basemetal when needed for corrosion resistance or other prop-erties.13.Lengths13.1 Pipe lengths shall be in accordance with the15.4 Pipes that have had weld seam repairs with fillerfollowing regular practice:metal shall be uniquely identified and shall be so stated13.1.1 Unless otherwise agreed upon,all sizes fromand identified on the certificate of tests.When filler metalother than that listed in Table 5 is used,the filler metalNPS to and including NPS 8 are available in a lengthshall be identified on the certificate of tests.up to 24 ft(Note 4)with the permissible range of 15 to24 ft(Note 4).Short lengths are acceptable and the num-ber and minimum length shall be agreed upon betweenthe manufacturer and the purchaser.16.CertificationNOTE 4-This value(s)applies when the inch-pound designation of16.1 In addition to the information required by Speci-this specification is the basis of purchase.When the Mdesignationfication A 999/A 999M,the certification shall stateof this specification is the basis of purchase,the corresponding metricvalue(s)shall be agreed upon between the manufacturer and the pur-whether or not the material was hydrostatically tested.Ifchaser.the material was nondestructively tested,the certification13.1.2 If definite cut lengths are desired,the lengthsshall so state and shall show which standard practice wasrequired shall be specified in the order.No pipe shall befollowed and what reference discontinuities were used.under the specified length and not more than in.6mmover that specified.13.1.3 No jointers are permitted unless otherwise17.Markingspecified.17.1 In addition to the marking specified in Specifica-tion A 999/A 999M.the marking shall include the NPS14.Workmanship,Finish,and Appearance(nominal pipe size)or outside diameter and schedule14.1 The finished pipes shall be reasonably straightnumber or average wall thickness,heat number,and NHand shall have a workmanlike finish.Imperfections maywhen hydrotesting is not performed and ET when eddy-516。with ASME500802w0e918C918-Transalta Utiities5910033100No roproduction or notworking permitled without liconso from IHSPART A 6 FERROUS MATERIAL SPECIFICATIONSSA-312/SA-312Mcurrent testing is performed or UT when ultrasonic testing18.1.4 Part Number:is performed.The marking shall also include the manufac-tureris private identifying mark,the marking requirementExample:ASTM A 312/A 312M Pipe 304 NPS 12 SCHof 12.3,if applicable,and whether seamless(SML)40S SMLSwelded(WLD),or heavily cold-worked(HCW).ForSpeciYcation Number.ASTM A 312Grades TP304H.TP316H,TP321H.TP347H.TP348H.Pip沁and S30815,the marking shall also include the heat num-Grade.304ber and heat-treatment lot identiYcation.If speciYed inNPS.12the purchase order,the marking for pipe larger than NPSWll0.3754 shall include the weight.SMLS OR WELDED,SML18.1.4.118.Government ProcurementSpeciYcation Number.,ASTM A 31218.1 Scale Free Pipe for Government Procurement:TubeGrade.30418.1.1 When speciYed in the contract or order,theOutside Diameter.0.250following requirements shall be considered in the inquiry.Wall.0.035contract or order,for agencies of the U.S.GovernmentSMLS OR WELDED.WLDwhere scale free pipe or tube is required.These require-ments shall take precedence if there is a conDict between18.1.5 Ordering Information-Orders for materialthese requirements and the product speciYcations.under this speciYcation shall include the following in18.1.2 The requirements of SpeciYcationaddition to the requirements of Section 4:A 999/A 999M for pipe and SpeciYcation18.1.5.1 Pipe or tube,A 450/A 450M for tubes shall be applicable when pipe18.1.5.2 Part number,or tube is ordered to this speciYcation.18.1.3 Pipe and tube shall be one of the following18.1.5.3 Ultrasonic inspection,if required,grades as speciYed herein:18.1.5.4 If shear wave test is to be conducted inGradetwo opposite circumferential directions,UNS DesignationTP304S3040018.1.5.5 Intergranular corrosion test,andTP304LS3040318.1.5.6 Level of preservation and packingTP304NS30451TP316S31600required.TP316LS31603TP316NS31651TP317S3170019.KeywordsTP317LS31703TP321S3210019.1 austenitic stainless steel;seamless steel pipe;TP347S34700stainless steel pipe;steel pipe;welded steel pipe517d by IHS u。with ASMEalta Utiitios/5910033100No roproduction or notworking permitled without liconso from IHS500802w0e918C2918