1、Designation: A335/A335M 15aStandard 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 specification2cov
3、ers 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 condit
4、ions, 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 % chr
5、omium.1.3 Supplementary requirements (S1 to S8) of an optionalnature are provided. Supplementary requirements S1 throughS6 call for additional tests to be made, and when desired, shallbe so stated in the order together with the number of such testsrequired.1.4 The values stated in either SI units or
6、 inch-pound 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-conform
7、ance with 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
8、.”2. Referenced 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for General Requirements forAlloy and Stainless Steel PipeE92 Test Method for Vickers Hardness of Metallic Materials(Withdrawn 2010)4E213 Practice for Ultrasonic Testing of Metal Pipe andTubingE309 Practice for Eddy-Current Examin
9、ation of 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
10、ASME Standard: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-Al
11、loy Steel 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 Alloys and is the direct responsibility of SubcommitteeA01.10 on Stainless and A
12、lloy Steel Tubular Products.Current edition approved Sept. 1, 2015. Published October 2015. Originallyapproved in 1951. Last previous edition approved in 2015 as A335/A335M15.DOI: 10.1520/A0335_A0335M-15A.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-335 in Sec
13、tion 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 volume information, refer to the standards Document Summary page onthe ASTM website.4The last approved version of this histo
14、rical standard is 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 1
15、9428-2959. United 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
16、. . .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 0.025 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
17、 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 0.025 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 0.0
18、50.15 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 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 0.90
19、1.10 V 0.200.30Ti 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
20、 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 0.070.14 0.70 max 0.020 0.010 0.50 max 10.0011.50 0.250.60 V 0.150.30W 1.502
21、.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 0.02 maxW 0.901.10Ti 0.01 maxZr 0.01 maxANew designation established in
22、 accordance with 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
23、 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 of the product. Hardness test frequency shall be two samples of product
24、per heat treatment lot and the hardness testing results shall be reported on the material test report.A335/A335M 15a22.4 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 I
25、nformation3.1 Orders 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
26、 or cold-drawn),3.1.5 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.
27、6 Length (specific 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 S
28、pecification designation, 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
29、 herein.5. Materials and Manufacture5.1 Pipe may be either hot finished or cold drawn with thefinishing treatment as required in 5.2.5.2 Heat Treatment:5.2.1 All pipe shall be reheated for heat treatment and heattreated in accordance with the requirements of Table 2.NOTE 3It is recommended that the
30、temperature for tempering shouldbe at least 100 F 50 C above the intended service temperature;consequently, 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 rapidl
31、y from above their critical temperature. Some willair harden, that is, become hardened to an undesirable degree when cooledin air from high temperatures. Therefore, operations involving heatingsuch steels above their critical temperatures, such as welding, flanging,and hot bending, should be followe
32、d by suitable heat treatment.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical 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 a
33、ssurancethat 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 minimumwall thickne
34、ss 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 7.6.7.2.3 The se
35、ction 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, abrasions (see Note 5)
36、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 slivers, found by e
37、xploration 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 workmanlike finish.
38、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 thisspecification. The outside
39、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 of the mechanical
40、 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 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
41、 + neutral flux;GTAW,A5.28/A5.28M ER90S-B9; and FCAWA5.29/A5.29M6Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.7Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,PA 15096-0001, h
42、ttp:/www.sae.org.A335/A335M 15a3E91T1-B9. In addition, the sum of the Ni+Mn content of allwelding consumables 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.
43、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 After 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 reas
44、onably 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 thickness (schedule) which is produced from the sameheat of steel and shall be limit
45、ed 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 var
46、y for theproduct analysis by 0.01 % and +0.02 % from the specifiedrange as per Table 1.8.4 If the analysis of one of the tests specified in 8.1 doesnot conform to the requirements specified in 6.1, an analysis ofeach billet or pipe from the same heat or lot may be made, andall billets or pipe confor
47、ming to the requirements shall beaccepted.9. Tensile and Hardness Requirements9.1 The tensile properties of the material shall conform tothe requirements prescribed in Table 3.TABLE 2 Heat Treatment RequirementsAGrade Heat Treat Type NormalizingTemperature,min or rangeF CCooling Media SubcriticalAnn
48、ealing orTemperingTemperature,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 . . . . . . 12
49、00-1300 650-705P5 full 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 . . . . . . 1250 675P11 full or isothermal anneal . . . . . . . . .normalize and temper . . . . . . 1200 650P12 full
