Designation:A269–02aStandard Specification forSeamless and Welded Austenitic Stainless Steel Tubing for General Service1This standard is issued under thefixed designation A269;the number immediately following the designation indicates the year of 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(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1This specification covers grades of nominal-wall-thickness,stainless steel tubing for general corrosion-resisting and low-or high-temperature service,as designated in Table1.1.2The tubing sizes and thicknesses usually furnished to this specification are1⁄4in.(6.4mm)in inside diameter and larger and0.020in.(0.51mm)in nominal wall-thickness and heavier.1.3Mechanical property requirements do not apply to tubing smaller than1⁄8in.(3.2mm)in inside diameter or0.015 in.(0.38mm)in thickness.N OTE1—When the impact test criterion for a low-temperature service would be15ft·lbf(20J)energy absorption or15mils lateral expansion, some of the austenitic stainless steel grades covered by this specification are accepted by certain pressure vessel or piping codes without the necessity of making the actual test.For example,Grades304,304L,and 347are accepted by the ASME Pressure Vessel Code,Section VIII Division1,and by ANSI B31.3,for service at temperatures as low as −425°F(−254°C)without qualification by impact tests.Other AISI stainless steel grades are usually accepted for service temperatures as low as−325°F(−198°C)without impact testing.Impact testing may,under certain circumstances,be required.For example,materials with chromium or nickel content outside the AISI ranges,and for material with carbon content exceeding0.10%,are required to be impact tested under the rules of ASME Section VIII Division1when services temperatures are lower than−50°F(−46°C).1.4Optional supplementary requirements are provided and, when one or more of these are desired,each shall be so stated in the order.1.5The values stated in inch-pound units are to be regarded as the standard.2.Referenced Documents2.1ASTM Standards:A262Practices for Detecting Susceptibility to Intergranu-lar Attack in Austenitic Stainless Steels2A370Test Methods and Definitions for Mechanical Testing of Steel Products2A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel,Austenitic Alloy Steel,and Stain-less Steel Tubes3A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet,and Strip2A632Specification for Seamless and Welded Austenitic Stainless Steel Tubing(Small-Diameter)for General Ser-vice3E527Practice for Numbering Metals and Alloys(UNS)3 2.2ANSI Standard:B31.3Chemical Plant and Petroleum Refinery Piping4 2.3ASME Pressure Vessel Code:Section VIII Division1,Pressure Vessels52.4Other Standard:SAE J1086Practice for Numbering Metals and Alloys (UNS)63.Ordering Information3.1Orders for material under this specification should include the following,as required,to describe the desired material adequately:3.1.1Quantity(feet,metres,or number of lengths),3.1.2Name of material(seamless or welded tubes),3.1.3Grade(Table1),3.1.4Size(outside diameter and nominal wall thickness), 3.1.5Length(specific or random),3.1.6Optional requirements(heat treatment,see Section6; hydrostatic or nondestructive electric test,see Section10), 3.1.7Test report required(see Section on Inspection of Specification A1016/A1016M),3.1.8Specification designation,and1This specification is under the jurisdiction of ASTM Committee A01on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10on Stainless and Alloy Steel Tubular Products.Current edition approved Dec.10,2002.Published January2003.Originally approved st previous edition approved in2002as A269–02.2Annual Book of ASTM Standards,V ol01.03.3Annual Book of ASTM Standards,V ol01.01.4Available from American National Standards Institute,11West42nd St.,13th Floor,New York,NY10036.5Available from ASME International,Three Park Avenue,New York,NY 10016-5990.6Available from Society of Automotive Engineers,400Commonwealth Drive, Warrendale,PA15096.1*A Summary of Changes section appears at the end of this standard. Copyright©ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959,United States.T A B L E 1C h e m i c a l R e q u i r e m e n t s %G r a d eC o m p o s i t i o n ,%T P 304T P 304LT P 304L NT P 316T P 316L T P 316L N T P 317T P 321T P 347T P 348T P X M -10T P X M -11T P X M -15T P X M -19T P X M -29......U N S D e s i g n a t i o n AS 30400S 30403S 30453S 3160031603S 31653S 31700S 32100S 34700S 34800S 21900S 21904S 38100S 20910S 24000S 31254S 31725C a r b o n0.08m a x 0.035m a x B0.035m a x B0.08m a x 0.035m a x B0.035m a x B0.08m a x 0.08m a x 0.08m a x 0.08m a x 0.08m a x 0.04m a x 0.08m a x 0.06m a x 0.08m a x 0.020m a x 0.035m a x M a n g a n e s e ,m a x C2.002.002.002.002.002.002.002.002.002.008.00–10.008.00–10.002.004.0–6.011.5–14.51.002.00P h o s p h o r u s ,m a x .0.0450.0450.0450.0450.0450.0450.0450.0450.0450.0450.0450.0450.0300.0450.0600.0300.045S u l f u r ,m a x .0.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0300.0150.030S i l i c o n C1.001.001.001.001.001.001.001.001.001.001.001.001.50–2.501.001.000.801.00N i c k e l8.0–11.08.0–12.08.0–11.010.0–14.010.0–15.010.0–13.011.0–15.09.0–12.09.0–12.09.0–12.05.5–7.55.5–7.517.5–18.511.5–13.52.3–3.717.5–18.513.5–17.5C h r o m i u m18.0–20.018.0–20.018.0–20.016.0–18.016.0–18.016.0–18.018.0–20.017.0–19.017.0–19.017.0–19.019.0–21.519.0–21.517.0–19.020.5–23.517.0–19.019.5–20.518.0–20.0M o l y b d e n u m.........2.00–3.002.00–3.002.00–3.003.0–4.0..................1.50–3.00...6.0–6.54.0–5.0T i t a n i u m .....................D...........................C o l u m b i u m ........................103C m i n 1.10m a x E.........0.10–0.30.........T a n t a l u m ,m a x ...........................0.10.....................N i t r o g e n F......0.10–0.16......0.10–0.16............0.15–0.400.15–0.40...0.20–0.400.20–0.400.18–0.220.20m a x V a n a d i u m .................................0.10–0.30......C o p p e r .............................................0.50–1.00...O t h e r s ...........................C o 0.20m a x.....................T A B L E 1C o n t i n u e dG r a d eC o m p o s i t i o n ,%........................U N S D e s i g n a t i o n AS 31726S 30600A S 24565S 32654S 35045N 08367N 08926N 08904C a r b o n0.035m a x 0.018m a x 0.030m a x 0.020m a x 0.06–0.100.030m a x 0.020m a x 0.020m a x M a n g a n e s e ,m a x C2.002.05.0–7.02.0–4.01.502.002.002.00P h o s p h o r u s ,m a x .0.0450.0200.0300.0300.0450.0400.0300.040S u l f u r ,m a x .0.0300.0200.0100.0050.0150.0300.0100.030S i l i c o n C1.003.7–4.31.000.501.001.000.501.00N i c k e l14.5–17.514.0–15.516.0–18.021.0–23.032.0–37.023.5–25.524.0–26.019.0–23.0C h r o m i u m17.0–20.017.0–18.523.0–25.024.0–25.025.0–29.020.0–22.019.0–21.023.0–28.0M o l y b d e n u m4.0–5.00.20m a x 4.0–5.07.0–8.06.0–7.06.0–7.04.0–5.0T i t a n i u m............0.15–0.60.........C o l u m b i u m ......0.10m a x ...............T a n t a l u m ,m a x .....................N i t r o g e n F0.10–0.200.40–0.600.45–0.55...0.18–0.250.15–0.250.10m a x V a n a d i u m ..................C o p p e r ...0.50m a x ...0.30–0.600.750.75m a x 0.50–1.501.00–2.00O t h e r s ............A l 0.15–0.60.........AN e w d e s i g n a t i o n e s t a b l i s h e d i n a c c o r d a n c e w i t h P r a c t i c e E 527a n d S A E J 1086.BF o r s m a l l d i a m e t e r o r t h i n w a l l s ,o r b o t h ,w h e r e m a n y d r a w i n g p a s s e s a r e r e q u i r e d ,a c a r b o n m a x i m u m o f 0.040%i s n e c e s s a r y i n g r a d e s T P 304L ,T P 304L N ,316L a n d 316L N .S m a l l o u t s i d e d i a m e t e r t u b e s a r e d e fin e d a s t h o s e w i t h l e s s t h a n 0.500i n .[12.7m m ]i n o u t s i d e d i a m e t e r a n d l i g h t w a l l s a r e t h o s e l e s s t h a n 0.049i n .[1.2m m ]i n m i n i m u m w a l l t h i c k n e s s .C M a x i m u m ,u n l e s s o t h e r w i s e i n d i c a t e d .DG r a d e T P 321s h a l l h a v e a t i t a n i u m c o n t e n t o f n o t l e s s t h a n fiv e t i m e s t h e s u m o f t h e c a r b o n a n d n i t r o g e n c o n t e n t a n d n o t m o r e t h a n 0.70%.E G r a d e T P 348s h a l l h a v e a c o l u m b i u m p l u s t a n t a l u m c o n t e n t o f n o t l e s s t h a n t e n t i m e s t h e c a r b o n c o n t e n t a n d n o t m o r e t h a n 1.10%.F T h e m e t h o d o f a n a l y s i s f o r n i t r o g e n s h a l l b e a m a t t e r o f a g r e e m e n t b e t w e e n t h e p u r c h a s e r a n d m a n u f a c t u r e r.3.1.9Special requirements and any supplementary require-ments selected.4.General Requirements4.1Material furnished under this specification shall con-form to the applicable requirements of the current edition of Specification A1016/A1016M,unless otherwise provided herein.5.Manufacture5.1The tubes shall be made by the seamless or welded process.5.2At the manufacturer’s option,tubing may be furnished either hotfinished or coldfinished.6.Heat Treatment6.1All material shall be furnished in the heat-treated condition.Except as provided in6.2,the heat-treatment pro-cedure shall,except for S31254and S32654(see6.3),S24565 (see6.4),N08367(see6.8),N08904(see6.5)and N08926(see 6.7),consist of heating the material to a minimum temperature of1900°F(1040°C)and quenching in water or rapidly cooling by other means.Alternatively,for seamless tubes,immediately following hot forming while the temperature of the tubes is not less than the specified minimum solution treatment tempera-ture,tubes may be individually quenched in water or rapidly cooled by other means.6.2Controlled structural or special service characteristics shall be specified as a guide for the most suitable heat treatment.If thefinal heat treatment is at a temperature under 1900°F and is so specified on the order,each tube shall be stenciled with thefinal heat treatment temperature in degrees Fahrenheit after the suffix“HT”.6.3S31254and S32654shall be heat-treated to a minimum temperature of2100°F(1150°C)followed by quenching in water or rapidly cooling by other means.6.4S24565shall be heat-treated in the range2050°F (1120°C)to2140°F(1170°C)followed by quenching in water or rapidly cooling by other means.6.5N08904shall be heat treated to a minimum temperature of2000°F(1100°C)followed by quenching in water or rapidly cooling by other means.6.6A solution annealing temperature above1950°F (1065°C)may impair the resistance to intergranular corrosion after subsequent exposure to sensitizing conditions in TP321, TP347,and TP348.When specified by the purchaser,a lower temperature stabilization or re-solution anneal shall be used subsequent to the initial high temperature solution anneal(see Supplementary Requirement S3).6.7N08926shall be heat-treated to a minimum temperature of2010°F(1100°C)followed by quenching in water or rapidly cooling by other means.6.8UNS N08367should be solution annealed from2025°F (1107°C)minimum followed by rapid quenching.6.9Solution annealing of S35045shall consist of heating the material to a temperature of2000°F(1093°C)minimum for an appropriate time,followed by cooling in still air or at a faster rate.7.Chemical Composition7.1The steel shall conform to the requirements as to chemical composition as prescribed in Table1.8.Product Analysis8.1An analysis of either one billet or one length of flat-rolled stock or one tube shall be made from each heat.The chemical composition thus determined shall conform to the requirements specified.8.2A product analysis tolerance of Table number A1.1in Specification A480/A480M shall apply.The product analysis tolerance is not applicable to the carbon content for material with a specified maximum carbon of.04%or less.8.3If the original test for product analysis fails,retests of two additional billets,lengths offlat-rolled stock,or tubes shall be made.Both retests for the elements in question shall meet the requirements of the specification;otherwise all remaining material in the heat or lot shall be rejected or,at the option of the producer,each billet,length offlat-rolled stock,or tube may be individually tested for acceptance.Billets,lengths of flat-rolled stock,or tubes which do not meet the requirements of the specification shall be rejected.9.Mechanical Tests Required9.1Flaring Test(Seamless Tubes)—One test shall be made on specimens from one end of one tube from each lot(Note2) offinished tubes.N OTE2—The term lot applies to all tubes prior to cutting to length of the same nominal size and wall thickness which are produced from the same heat of steel.Whenfinal heat treatment is in a batch-type furnace,a heat-treatment lot shall include only those tubes of the same size and from the same heat which are heat treated in the same furnace charge.When the final heat treatment is in a continuous furnace or when the heat-treated condition is obtained directly by quenching after hot forming,the number of tubes of the same size and from the same heat in a heat-treatment lot shall be determined from the size of the tubes as prescribed in Table2.9.2Flange Test(Welded Tubes)—One test shall be made on specimens from one end of one tube from each lot(Note2)of finished tubes.9.3Hardness Test—Brinell or Rockwell hardness determi-nation shall be made on specimens from two tubes from each lot.The term lot applies to all tubes prior to cutting,of the same nominal diameter and wall thickness that are produced from the same heat of steel.Whenfinal heat treatment is in a batch-type furnace,a lot shall include only those tubes of the same size and the same heat which are heat treated in the same TABLE2Number of Tubes in a Lot Heat Treated by theContinuous Process or by Direct Quench After Hot FormingSize of Tube Size of Lot 2in.and over in outside diameter and0.200in.(5.08mm)and over in wall thicknessnot more than50tubesLess than2in.but over1in.in outsidediameteror over1in.in outside diameter andunder0.200in.(5.08mm)in wall thicknessnot more than75tubes 1in.or less in outside diameter not more than125tubesfurnace charge.When the final heat treatment is in a continuous furnace or when the heat-treated condition is obtained directly by quenching after hot forming,a lot shall include all tubes of the same size and heat,heat treated in the same furnace at the same temperature,time at heat,and furnace speed,or all tubes of the same size and heat,hot formed and quenched in the same production run.9.4When more than one heat is involved,the flaring,flanging,and hardness test requirements shall apply to each heat.9.5Reverse Flattening Test —For welded tubes,one reverse flattening test shall be made on a specimen from each 1500ft (460m)of finished tubing.Coiled tubing greater than 1500ft (450m)in length shall be sampled at both ends.A coil must be continuous without any circumferential butt welds.10.Hydrostatic or Nondestructive Electric Test10.1Each tube shall be subjected to the nondestructive electric test or the hydrostatic test.The type of test to be used shall be at the option of the manufacturer,unless otherwise specified in the purchase order.11.Hardness Requirements11.1Grades TPXM-29,S24565,N08367,and N08926tubes shall have a hardness number not exceeding 256HB/270HV or 100HRB.Grades TPXM-10,TPXM-11,and TPXM-19tubes shall have a hardness number not exceeding 269HB/285HV or 25HRC.S31254shall have a hardness number not exceeding 220HB/230HV or 96HRB.S32654shall have a hardness number not exceeding 250HB/263HV or 100HRB.Tubes made from all other grades shall have a hardness number not exceeding 192HB/200HV or 90HRB.11.2For tubing less than 0.065in.(1.65mm)in wall thickness,it is permissible to use the Rockwell superficial hardness test or the Vickers hardness test.When the Vickers test is used,the values of 11.1will apply.The superficial hardness number for Grade TPXM-29tubes shall not exceed 80on the 30T scale or 92on the 15T scale.The hardness number for Grades TPXM-10,TPXM-11,and TPXM-19tubes shall not exceed 46on the 30N scale or 73on the 15N scale.The hardness number for S31254shall not exceed 79on the 30T scale or 91on the 15T scale.Tubes made from all other grades shall not exceed 74on the 30T scale or 88on the 15T scale.11.3The hardness test shall not be required on tubes smaller than 1⁄4in.(6.4mm)in inside diameter or tubes having a wall thickness thinner than 0.020in.(0.51mm)(see A2.4of Methods and Definitions A 370).Smaller or thinner tubes should be tension tested only,in accordance with Specification A 632.12.Permissible Variations in Dimensions12.1Variations in outside diameter,wall thickness,and length,from those specified,shall not exceed the amounts prescribed in Table 3.12.2The permissible variations in outside diameter given in Table 3are not sufficient to provide for ovality in thin-walled tubes,as defined in the Table.In such tubes,the maximum and minimum diameters at any cross section shall deviate from the nominal diameter by no more than twice the permissible variation in outside diameter given in Table 3;however,the mean diameter at that cross section must still be within the given permissible variation.13.Surface Condition13.1The tubes shall be pickled free of scale.When bright annealing is used,pickling is not necessary.14.Product Marking14.1In addition to the marking prescribed in Specification A 1016/A 1016M,the marking shall include whether the tub-ing is seamless or welded and the final heat-treatment tempera-ture in degrees Fahrenheit after the suffix “HT”if the final heat treatment temperature is under 1900°F (1040°C).14.2When the Nondestructive Electric Test is performed,each length of tubing shall be marked with the letters “NDE,”and the certification,when required,shall also indicate this test.15.Keywords15.1austenitic stainless steel;seamless steel tube;stainless steel tube;steel tube;welded steel tubeTABLE 3Permissible Variations in DimensionsGroupSize,Outside Diameter,in.Permissible Variations in Outside Diameter,in.(mm)Permissible Variations inWallThickness,A %Permissible Variations inCut Length,in.(mm)BThin Walled Tubes COver Under 1Up to 1⁄260.005(0.13)6151⁄8(3.2)0...21⁄2to 11⁄2,excl 60.005(0.13)6101⁄8(3.2)0less than 0.065in.(1.65mm)nominal 311⁄2to 31⁄2,excl 60.010(0.25)6103⁄16(4.8)0less than 0.095in.(2.41mm)nominal 431⁄2to 51⁄2,excl 60.015(0.38)6103⁄16(4.8)0less than 0.150in.(3.81mm)nominal 551⁄2to 8,excl 60.030(0.76)6103⁄16(4.8)0less than 0.150in.(3.81mm)nominal 68to 12,excl 60.040(1.01)6103⁄16(4.8)0less than 0.200in.(5.08mm)nominal 712to 14,excl60.050(1.26)6103⁄16(4.8)lessthan0.220in.(5.59mm)nominalAWhen tubes as ordered require wall thicknesses 3⁄4in.(19.0mm)or over,or an inside diameter 60%or less of the outside diameter,a wider variation in wall thickness is required.On such sizes a variation in wall thickness of 12.5%over or under will be permitted.For tubes less than 1⁄2in.(12.7mm)in inside diameter which cannot be successfully drawn over a mandrel,the wall thickness may vary 615%from that specified.BThese tolerances apply to cut lengths up to and including 24ft (7.3m).For lengths greater than 24ft (7.3m),the above over tolerances shall be increased by 1⁄8in.(3mm)for each 10ft (3m)or fraction thereof over 24ft,or 1⁄2in.(13mm),whichever is lesser.COvality provisions of 11.2apply.SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall apply only when specified by the purchaser in the inquiry,contract,or order.S1.Stress-Relieved Annealed TubesS1.1For use in certain corrosives,particularly chlorides where stress corrosion may occur,tubes in Grades TP304L, TP316L,TP321,TP347,and TP348may be specified in the stress-relieved-annealed condition.S1.2When stress-relieved tubes are specified,tubes shall be given a heat treatment at1550to1650°F(845to900°C)after roll straightening.Cooling from this temperature range may be either in air or by slow cooling.No mechanical straightening is permitted after the stress-relief treatment.S1.3Straightness of the tubes and additional details of this supplementary requirement shall be agreed upon between the manufacturer and purchaser.S2.Air Underwater Pressure TestS2.1When specified,the tubing shall be examined by the air underwater pressure test.S3.Stabilizing Heat TreatmentS3.1Subsequent to the solution anneal required in Section 6,Grades TP321,TP347,and TP348shall be given a stabili-zation heat treatment at a temperature lower than that used for the initial solution annealing heat treatment.The temperature of stabilization heat treatment shall be at a temperature as agreed upon between the purchaser and vendor.S4.Intergranular Corrosion TestS4.1When specified,material shall pass intergranular cor-rosion tests conducted by the manufacturer in accordance with Practices A262,Practice E.S4.2A stabilization heat treatment in accordance with Supplementary Requirement S3may be necessary and is permitted in order to meet this requirement for the grades containing titanium or columbium.N OTE S4.1—Practice E requires testing on the sensitized condition for low carbon or stabilized grades,and on the as-shipped condition for other grades.SUMMARY OF CHANGESThis section identifies the location of changes to this specification that have been incorporated since the last issue,A269–02.(1)Added new alloy UNS S35045to Table1.(2)Added new paragraph6.9.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this ers of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed everyfive years and if not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959, United States.Individual reprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the aboveaddress or at610-832-9585(phone),610-832-9555(fax),or service@(e-mail);or through the ASTM website().。
