1、Designation: A335/A335M 15Standard 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 U.S. Department of Defense.1. Scope*1.1 This specification2cove
3、rs nominal 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 conditi
4、ons, 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 % chro
5、mium.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-po
6、und unitsare 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 wit
7、h thestandard. 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. Ref
8、erenced Documents2.1 ASTM Standards:3A999/A999M Specification for General Requirements forAlloy and Stainless Steel PipeE92 Test Method for Vickers Hardness of Metallic Materials(Withdrawn 2010)4E213 Practice for Ultrasonic Testing of Metal Pipe andTubingE309 Practice for Eddy-Current Examination of
9、 Steel Tubu-lar Products 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 Sta
10、ndard:B36.10M Welded and Seamless Wrought Steel Pipe2.3 AWS Specifications5A5.5/A5.5M Specification for Low-Alloy Steel Electrodesfor Shielded Metal Arc WeldingA5.23/A5.23M Specification for Low-Alloy Steel Elec-trodes and Fluxes for Submerged Arc WeldingA5.28/A5.28M Specification for Low-Alloy Stee
11、l Elec-trodes for Gas Shielded Arc WeldingA5.29/A5.29M Low-Alloy Steel Electrodes for Flux CoredArc Welding1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloysand is the direct responsibility of SubcommitteeA01.10 on Stainless and Alloy Stee
12、l Tubular Products.Current edition approved May 1, 2015. Published May 2015. Originallyapproved in 1951. Last previous edition approved in 2011 as A335/A335M11.DOI: 10.1520/A0335_A0335M-15.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-335 in Section II of that
13、Code.3For 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.4The last approved version of this historical standard i
14、s referenced onwww.astm.org.5Available from American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126, http:/www.aws.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
15、d States1TABLE 1 Chemical RequirementsGradeUNSDesigna-tionAComposition, %CarbonMan-ganesePhos-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
16、.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 0.025 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
17、 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 0.025 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
18、.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 0.50 max 1.902.60 0.050.30 V 0.200.30Cb 0.020.08B 0.00100.006N 0.015 maxAl 0.030 maxW 1.451.75Ni 0.40 maxTi 0.0050.060Ti/N $ 3.5CP24 K30736 0.050.10 0.300.70 0.020 0.010 0.150.45 2.202.60 0.901.10 V 0.200.30T
19、i 0.060.10N 0.012 maxAl 0.02 maxB 0.00150.007P36 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 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 maxC
20、b 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 0.070.14 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
21、 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 0.02 maxW 0.901.10Ti 0.01 maxZr 0.01 maxANew designation established in accordance with
22、 Practice E527 and SAE J1086, 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 8 to 10 times the carboncontent.CAlternatively, in lieu of this ratio minimum, the ma
23、terial 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 of the product. Hardness test frequency shall be two samples of productper heat treatme
24、nt lot and the hardness testing results shall be reported on the material test report.A335/A335M 1522.4 Other Documents:SNT-TC-1A Recommended Practice for Nondestructive Per-sonnel Qualification and Certification6SAE J 1086 Practice for Numbering Metals and Alloys(UNS)73. Ordering Information3.1 Ord
25、ers for material under this specification shouldinclude the following, 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
26、.1.5 Size using one of the following:3.1.5.1 NPS and schedule number,3.1.5.2 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 (specifi
27、c or random),3.1.7 End finish (Ends Section of Specification A999/A999M),3.1.8 Optional requirements (Section 8, 12 and 13 of thisspecification. See the Sections on Hydrostatic Test Require-ments and PermissibleVariation inWeight for Seamless Pipe inSpecification A999/A999M),3.1.9 Specification desi
28、gnation, and3.1.10 Special requirements or any 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. Materi
29、als and Manufacture5.1 Pipe may be either hot 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 ma
30、nufacturer and purchaser.5.3 Heat Treatment:5.3.1 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,
31、the purchaser should advise the manufacturer if 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 deg
32、ree when cooledin air from high temperatures. 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 toche
33、mical composition prescribed in Table 1.7. Workmanship, Finish, and Appearance7.1 The pipe manufacturer shall explore a sufficient numberof visual surface imperfections to provide reasonable assurancethat they have been properly evaluated with respect to depth.Exploration of all surface imperfection
34、s 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 minimumwall thickness shall be considered defects. Pipe with suchdefects shall be given one of the following dispositions:7.2.1
35、 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 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
36、.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, abrasions (see Note 5) and pits,any of which imperfections are deeper than116 in. 1.6 mm.NOTE 5Marks and abrasions are defined as c
37、able 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 slivers, found by exploration in accor-dance with 7.1 to be deeper than 5 % of the nominal wallthickness.7.4 At the purchasers
38、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 workmanlike finish. Disposition of such pipe shallbe a matter of agreement between the manufacturer and thepurchaser.7.5 When im
39、perfections or defects are removed by grinding,a smooth curved surface shall be maintained, and the wallthickness shall not be decreased below that permitted by thisspecification. The outside diameter at the point of grinding maybe reduced by the amount so removed.7.5.1 Wall thickness measurements s
40、hall be made with amechanical caliper or with a properly calibrated nondestructivetesting device of appropriate accuracy. In case of dispute, themeasurement determined by use of the mechanical caliper shallgovern.7.6 Weld repair shall be permitted only subject to theapproval of the purchaser and in
41、accordance with SpecificationA999/A999M.7.6.1 All repair welds in P91 shall be made with one of thefollowing welding processes and consumables: SMAW, A5.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + neutral flux;6Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlin
42、gate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.7Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,PA 15096-0001, http:/www.sae.org.A335/A335M 153GTAW,A5.28/A5.28M ER90S-B9; and FCAWA5.29/A5.29ME91T1-B9. In addition, the sum of the Ni+Mn content of allwelding consumables
43、 used to weld repair P91 shall not exceed1.0 %.7.6.2 All repair welds in P92, P911, and P122, shall be madeusing welding consumables meeting the chemical requirementsfor the grade in Table 1.7.6.3 After weld repair, Grades P23, P91, P92, and P122shall be heat treated at 1350-1470 F 730-800 C.7.6.4 A
44、fter weld repair, Grade P911 shall be heat treated at1365-1435 F 740-780 C.7.6.5 After weld repair, Grade P24 shall be heat treated at1350-1420 F 730-770 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
45、 as defined hereafter shall be made by themanufacturer. A lot is all pipe of the same nominal size andwall 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 result
46、s of these analyses shall be reported to thepurchaser or the purchasers representative, and shall conformto the requirements specified in Table 1.TABLE 2 Heat Treatment RequirementsAGrade Heat Treat Type NormalizingTemperature,min or rangeF CCooling Media SubcriticalAnnealing orTemperingTemperature,
47、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 or isot
48、hermal 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 . . . . . . 1250 675P
49、11 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 . . . . . . 1200 650P21 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1250 675P22 full or isother
