1、Designation: A335/A335M 10Standard Specification forSeamless Ferritic Alloy-Steel Pipe for High-TemperatureService1This standard is issued under the fixed designation A335/A335M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、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 Department of Defense.1. Scope*1.1 This specification2covers no
3、minal wall and minimumwall seamless ferritic alloy-steel pipe intended for high-temperature service. Pipe ordered to this specification shall besuitable for bending, flanging (vanstoning), and similar form-ing operations, and for fusion welding. Selection will dependupon design, service conditions,
4、mechanical properties, andhigh-temperature characteristics.1.2 Several grades of ferritic steels (see Note 1) are covered.Their compositions are given in Table 1.NOTE 1Ferritic steels in this specification are defined as low- andintermediate-alloy steels containing up to and including 10 % chromium.
5、1.3 Supplementary requirements (S1 to S7) of an optionalnature are provided. These supplementary requirements call foradditional tests to be made, and when desired, shall be so statedin the order together with the number of such tests required.1.4 The values stated in either SI units or inch-pound u
6、nitsare 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 the
7、standard. The inch-pound units shall apply unless the “M”designation of this specification is specified in the order.NOTE 2The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such traditional terms as “nominaldiameter,” “size,” and “nominal size.”2. Referenc
8、ed Documents2.1 ASTM Standards:3A999/A999M Specification for General Requirements forAlloy and Stainless Steel PipeE92 Test Method for Vickers Hardness of Metallic Materi-alsE213 Practice for Ultrasonic Testing of Metal Pipe andTubingE309 Practice for Eddy-Current Examination of Steel Tu-bular Produ
9、cts Using Magnetic SaturationE381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and ForgingsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E570 Practice for Flux Leakage Examination of Ferromag-netic Steel Tubular Products2.2 ASME Standard:B36.10M Welded
10、and Seamless Wrought Steel Pipe2.3 Other Documents:SNT-TC-1A Recommended Practice for NondestructivePersonnel Qualification and Certification4SAE J 1086 Practice for Numbering Metals and Alloys(UNS)53. Ordering Information3.1 Orders for material under this specification shouldinclude the following,
11、as required, to describe the desiredmaterial adequately:3.1.1 Quantity (feet, metres, or number of lengths),3.1.2 Name of material (seamless alloy steel pipe),3.1.3 Grade (Table 1),3.1.4 Manufacture (hot-finished or cold-drawn),3.1.5 Size using one of the following:3.1.5.1 NPS and schedule number,3.
12、1.5.2 Outside diameter and nominal wall thickness,3.1.5.3 Outside diameter and minimum wall thickness,3.1.5.4 Inside diameter and nominal wall thickness, and3.1.5.5 Inside diameter and minimum wall thickness.3.1.6 Length (specific or random),1This specification is under the jurisdiction of ASTM Comm
13、ittee 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 April 1, 2010. Published May 2010. Originallyapproved in 1951. Last previous edition approved in 2009 as A335/A335M09a.D
14、OI: 10.1520/A0335_A0335M-10.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-335 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 v
15、olume information, refer to the standards Document Summary page onthe ASTM website.4Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.5Available from SAE International (SAE), 400 Commonwealth Dr., Warrenda
16、le,PA 15096-0001, http:/www.sae.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.TABLE 1 Chemical RequirementsGradeUNSDesigna-tionAComposition, %CarbonMan-ganesePho
17、s-phorus,maxSulfur,maxSilicon ChromiumMolybde-num OthersP1 K11522 0.100.20 0.300.80 0.025 0.025 0.100.50 . . . 0.440.65 . . .P2 K11547 0.100.20 0.300.61 0.025 0.025 0.100.30 0.500.81 0.440.65 . . .P5 K41545 0.15 max 0.300.60 0.025 0.025 0.50 max 4.006.00 0.450.65 . . .P5b K51545 0.15 max 0.300.60 0.
18、025 0.025 1.002.00 4.006.00 0.450.65 . . .P5c K41245 0.12 max 0.300.60 0.025 0.025 0.50 max 4.006.00 0.450.65 . . .BP9 S50400 0.15 max 0.300.60 0.025 0.025 0.251.00 8.0010.00 0.901.10 . . .P11 K11597 0.050.15 0.300.60 0.025 0.025 0.501.00 1.001.50 0.440.65 . . .P12 K11562 0.050.15 0.300.61 0.025 0.0
19、25 0.50 max 0.801.25 0.440.65 . . .P15 K11578 0.050.15 0.300.60 0.025 0.025 1.151.65 . . . 0.440.65 . . .P21 K31545 0.050.15 0.300.60 0.025 0.025 0.50 max 2.653.35 0.801.06 . . .P22 K21590 0.050.15 0.300.60 0.025 0.025 0.50 max 1.902.60 0.871.13 . . .P23 K41650 0.040.10 0.100.60 0.030 max 0.010 max
20、0.50 max 1.902.60 0.050.30 V 0.200.30Cb 0.020.08B 0.00100.006N 0.0015 maxAl 0.030 maxW 1.451.75Ni 0.40 maxTi 0.0050.060Ti/N $ 3.5CP36 K21001 0.100.17 0.801.20 0.030 max 0.025 max 0.250.50 0.30 max 0.250.50 Ni 1.00-1.30Cu 0.50-0.80Cb 0.015-0.045V0.02maxN0.02maxAl 0.050 maxP91 K91560 0.080.12 0.300.60
21、 0.020 0.010 0.200.50 8.009.50 0.851.05 V 0.180.25N 0.0300.070Ni 0.40 maxAl 0.02 maxCb 0.060.10Ti 0.01 maxZr 0.01 maxP92 K92460 0.070.13 0.300.60 0.020 0.010 0.50 max 8.509.50 0.300.60 V 0.150.25N 0.030.07Ni 0.40 maxAl 0.02 maxCb 0.040.09W 1.52.00B 0.0010.006Ti 0.01 maxZr 0.01 maxP122 K92930 0.070.1
22、4 0.70 max 0.020 0.010 0.50 max 10.0011.50 0.250.60 V 0.150.30W 1.502.50Cu 0.301.70Cb 0.040.10B 0.00050.005N 0.0400.100Ni 0.50 maxAl 0.020 maxTi 0.01 maxZr 0.01 maxP911 K91061 0.090.13 0.300.60 0.020 max 0.010 max 0.100.50 8.59.5 0.901.10 V 0.180.25Ni 0.40 maxCb 0.0600.10B 0.00030.006N 0.040.09Al 0.
23、02 maxW 0.901.10Ti 0.01 maxZr 0.01 maxANew designation established in accordance with Practice E527 and SAE J 1086, Practice for Numbering Metals and Alloys (UNS).BGrade P 5c shall have a titanium content of not less than 4 times the carbon content and not more than 0.70 %; or a columbium content of
24、 8 to 10 times the carboncontent.CAlternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and coolingto room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness o
25、f the product. Hardness test frequency shall be two samples of productper heat treatment lot and the hardness testing results shall be reported on the material test report.A335/A335M 1023.1.7 End finish (Ends Section of Specification A999/A999M),3.1.8 Optional requirements (Section 8, 12 and 13 of t
26、hisspecification. See the Sections on Hydrostatic Test Require-ments and PermissibleVariation inWeight for Seamless Pipe inSpecification A999/A999M),3.1.9 Test report required (Certification Section of Specifi-cation A999/A999M),3.1.10 Specification designation, and3.1.11 Special requirements or any
27、 supplementary require-ments selected, or both.4. General Requirements4.1 Material furnished to this specification shall conform tothe applicable requirements of the current edition of Specifi-cation A999/A999M, unless otherwise provided herein.5. Materials and Manufacture5.1 Pipe may be either hot
28、finished or cold drawn with thefinishing treatment as required in 5.3.5.2 Grade P2 and P12The steel shall be made by coarse-grain melting practice. Specific limits, if any, on grain size ordeoxidation practice shall be a matter of agreement betweenthe manufacturer and purchaser.5.3 Heat Treatment:5.
29、3.1 All pipe shall be reheated for heat treatment and heattreated in accordance with the requirements of Table 2.NOTE 3It is recommended that the temperature for tempering shouldbe at least 100 F 50 C above the intended service temperature;consequently, the purchaser should advise the manufacturer i
30、f the servicetemperature is to be over 1100 F 600 C.NOTE 4Certain of the ferritic steels covered by this specification willharden if cooled rapidly from above their critical temperature. Some willair harden, that is, become hardened to an undesirable degree when cooledin air from high temperatures.
31、Therefore, operations involving heatingsuch steels above their critical temperatures, such as welding, flanging,and hot bending, should be followed by suitable heat treatment.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1.7. Wor
32、kmanship, Finish, and Appearance7.1 The pipe manufacturer shall explore a sufficient numberof visual surface imperfections to provide reasonable assuranceTABLE 2 Heat Treatment RequirementsAGrade Heat Treat Type NormalizingTemperature,min or rangeF CCooling Media SubcriticalAnnealing orTemperingTemp
33、erature,min or rangeF CP1 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1200 650subcritical anneal . . . . . . 1200-1300 650-705P2 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675subcritical anneal . . . . . . 1200-1300 650-705P5 full
34、 or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675P5b full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675P5c subcritical anneal . . . . . . 1325-1375 715-745P9 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1
35、250 675P11 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1200 650P12 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1200 650subcritical anneal . . . . . . 1200-1300 650-705P15 full or isothermal anneal . . . . . . . . .normalize and temper .
36、 . . . . . 1200 650P21 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675P22 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675P23 normalize and temper 1900-1975 1040-1080 air oracceleratedcooling1350-1470 730-800P36 normalize and t
37、emperB1650 900 . . . 1100 595P91 normalize and temper 1900-1975 1040-1080 . . . 1350-1470 730-800Cquench and temperD1900-1975 1040-1080 . . . 1350-1470 730-800P92 normalize and temper 1900-1975 1040-1080 . . . 1350-1470 730-800P122 normalize and temper 1900-1975 1040-1080 . . . 1350-1470 730-800P911
38、 normalize and temper 1900-1975 1040-1080E1365-1435 740-780AWhere ellipses () appear in this table there is no requirement.BAlternatively, Grade P36, Class 2 shall be cooled from the austenitizing temperature by accelerated cooling in air or by liquid quenching.CExcept when Supplementary Requirement
39、 S7 is specified by the purchaser.DWhen mutually agreed upon between the manufacturer and the purchaser, quenching and tempering shall be permitted for thicknesses greater than 3 in. 75 mm.EAccelerated cooling from the normalizing temperature shall be permitted for section thicknesses greater than 3
40、 in. 75 mm.A335/A335M 103that they have been properly evaluated with respect to depth.Exploration of all surface imperfections is not required but maybe necessary to ensure compliance with 7.27.2 Surface imperfections that penetrate more than 1212 %of the nominal wall thickness or encroach on the mi
41、nimumwall thickness shall be considered defects. Pipe with suchdefects shall be given one of the following dispositions:7.2.1 The defect may be removed by grinding provided thatthe remaining wall thickness is within specified limits.7.2.2 Repaired in accordance with the repair welding pro-visions of
42、 7.6.7.2.3 The section of pipe containing the defect may be cutoff within the limits of requirements on length.7.2.4 Rejected.7.3 To provide a workmanlike finish and basis for evaluat-ing conformance with 7.2, the pipe manufacturer shall removeby grinding the following:7.3.1 Mechanical marks, abrasi
43、ons (see Note 5) and pits,any of which imperfections are deeper than116 in. 1.6 mm.NOTE 5Marks and abrasions are defined as cable marks, dinges, guidemarks, roll marks, ball scratches, scores, die marks, and the like.7.3.2 Visual imperfections, commonly referred to as scabs,seams, laps, tears, or sl
44、ivers, found by exploration in accor-dance with 7.1 to be deeper than 5 % of the nominal wallthickness.7.4 At the purchasers discretion, pipe shall be subject torejection if surface imperfections acceptable under 7.2 are notscattered, but appear over a large area in excess of what isconsidered a wor
45、kmanlike finish. Disposition of such pipe shallbe a matter of agreement between the manufacturer and thepurchaser.7.5 When imperfections or defects are removed by grinding,a smooth curved surface shall be maintained, and the wallthickness shall not be decreased below that permitted by thisspecificat
46、ion. The outside diameter at the point of grinding maybe reduced by the amount so removed.7.5.1 Wall thickness measurements shall be made with amechanical caliper or with a properly calibrated nondestructivetesting device of appropriate accuracy. In case of dispute, themeasurement determined by use
47、of the mechanical caliper shallgovern.7.6 Weld repair shall be permitted only subject to theapproval of the purchaser and in accordance with SpecificationA999/A999M.7.6.1 After weld repair, Grades P23, P91, P92, and P122shall be heat treated at 1350-1470 F 730-800 C.7.6.2 After weld repair, Grade P9
48、11 shall be heat treated at1365-1435 F 740-780 C.7.7 The finished pipe shall be reasonably straight.8. Product Analysis8.1 At the request of the purchaser, an analysis of two pipesfrom each lot as defined hereafter shall be made by themanufacturer. A lot is all pipe of the same nominal size andwall
49、thickness (schedule) which is produced from the sameheat of steel and shall be limited as follows:NPS Designator Maximum Number ofLengths in a LotUnder 2 4002to5 2006 and over 1008.2 The results of these analyses shall be reported to thepurchaser or the purchasers representative, and shall conformto the requirements specified in Table 1.8.3 For grade P 91 the carbon content may vary for thepro
