1、Designation: A335/A335M 18aStandard 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、.”1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers
9、to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A999/A999M Specification for General Requirements forAlloy and Stainless Steel PipeE92 Test Methods for Vickers Hardness and Knoop Hard-ness of Metallic MaterialsE213 Practice for Ultrasonic Testing of Metal Pipe andTubingE309 Pract
10、ice for Eddy Current Examination 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
11、 Steel Tubular Products2.2 ASME Standard:B36.10M Welded and Seamless Wrought Steel Pipe2.3 AWS Specifications4A5.5/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/A5.2
12、8M Specification for Low-Alloy Steel Elec-trodes for Gas Shielded Arc 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 Alloy Steel Tubular Products.Current ed
13、ition approved Sept. 1, 2018. Published September 2018. Originallyapproved in 1951. Last previous edition approved in 2018 as A335/A335M 18.DOI: 10.1520/A0335_A0335M-18A.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-335 in Section II of that Code.3For reference
14、d 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.4Available from American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, F
15、L 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. United StatesThis international standard was developed in accordance with internationally recognized princip
16、les on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1TABLE 1 Chemical RequirementsGradeUNSDesigna-tionAComposition, %CarbonMan-gan
17、esePhos-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
18、.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 K90941 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 0.0
19、25 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 0.025 0.025 0.50 max 1.902.60 0.871.13 . . .P23 K41650 0.040.10 0.100.60 0.030 max 0.01
20、0 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 0.200.30Ti 0.060.10N 0.012 maxAl 0.02 maxB 0.00150.007P36 K21001 0.100.17 0.801.20 0.030 max 0.
21、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 maxP91Type 1K91560 0.080.12 0.300.60 0.020 0.010 0.200.50 8.009.50 0.851.05V 0.180.25N 0.0300.070Ni 0.40 maxAl 0.02 maxCb 0.060.10Ti 0.01 maxZr 0.01 maxP91Type 2K91560VHeat 0.080.12 0.300.50D0.020D0.005
22、D0.200.40D8.009.50D0.851.05 Heat 0.180.25Product 0.070.13 0.801.05 Product 0.160.27Ni 0.20 maxDAl 0.020 maxDN 0.0350.070DN/Al ratio $4.0CbHeat 0.060.10Product 0.050.11Ti 0.01 maxDZr 0.01 maxDSn 0.010 maxDSb 0.003 maxDAs 0.010 maxDB 0.001 maxDW0.05maxDCu 0.10 maxDP92 K92460 0.070.13 0.300.60 0.020 0.
23、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 maxA335/A335M 18a2A5.29/A5.29M Low-Alloy Steel Electrodes for Flux CoredArc Welding2.4 Other Documents:SNT-TC-1A Recommended Practice for Nondestructive Per-sonnel Qualificatio
24、n and Certification5SAE J 1086 Practice for Numbering Metals and Alloys(UNS)63. Ordering Information3.1 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
25、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,3.1.5.2 Outside diameter and nominal wall thickness,3.1.5.3 Outside diameter and minimum wall thickness,3.1.5.4 Inside diame
26、ter and nominal wall thickness, and3.1.5.5 Inside diameter and minimum wall thickness.3.1.6 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-me
27、nts and PermissibleVariation inWeight for Seamless Pipe inSpecification A999/A999M),3.1.9 Specification designation, and3.1.10 Special requirements or any supplementary require-ments selected, or both.3.1.11 The flattening or bend test shall be performed on 5 %of the pipe (or fewer in accordance wit
28、h 14.2) unless Supple-mentary Requirement S3 is specified.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
29、either hot finished or cold drawn with thefinishing treatment as required in 5.2.5Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.6Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale
30、,PA 15096-0001, http:/www.sae.org.TABLE 1 ContinuedGradeUNSDesigna-tionAComposition, %CarbonMan-ganesePhos-phorus,maxSulfur,maxSilicon ChromiumMolybde-num OthersP93 K91350 0.050.10 0.200.70 0.020 0.008 0.050.50 8.509.50 . . . V 0.150.30W 2.53.5Co 2.53.5Ni 0.20 maxCb + Ta0.050.12Nd 0.0100.060B 0.0070
31、.015Al 0.030 maxN 0.0050.015O 0.0050 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 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
32、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 Practice E527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).BGrade P5c shall have a titanium content of not less than 4 times the carbon co
33、ntent and not more than 0.70 %; or a columbium content of 8 to 10 times the carbon content.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 temperi
34、ng. Hardness testing shall be performed at mid-thickness of 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.DApplies to both heat and product analyses.A335/A335M 18a35.2 Heat Tre
35、atment: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 temperature for tempering shouldbe at least 100 F 50 C above the intended service temperature;consequently, the purchaser should advise the manuf
36、acturer 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 degree when cooledin air from high tempe
37、ratures. 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
38、 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 imperfections is not required but maybe necessary
39、 to ensure compliance with 7.2.7.2 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 The defect may be removed by grindi
40、ng 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.7.3 To provide a workmanlike finish
41、 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.TABLE 2 Heat Treatment RequirementsAGrade Heat Treat Type NormalizingTemperatu
42、re,min or rangeF CCooling Media SubcriticalAnnealing orTemperingTemperature,min or rangeF CP1 full or isothermal anneal or . . . . . . . . .normalize and temper or . . . . . . 1200 650subcritical anneal . . . . . . 12001300 650705P2 full or isothermal anneal or . . . . . . . . .normalize and temper
43、or . . . . . . 1250 675subcritical anneal . . . . . . 12001300 650705P5 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1250 675P5b full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1250 675P5c subcritical anneal . . . . . . 13251375 715745
44、P9 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1250 675P11 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1200 650P12 full or isothermal anneal or . . . . . . . . .normalize and temper or . . . . . . 1200 650subcritical anneal . . .
45、. . . 12001300 650705P15 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1200 650P21 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1250 675P22 full or isothermal anneal or . . . . . . . . .normalize and temper . . . . . . 1250 675P23 no
46、rmalize and temper 19001975 10401080 air oracceleratedcooling13501470 730800P24 normalize and temper 18001870 9801020 air oracceleratedcooling13501420 730770P36 normalize and temperB1650 900 . . . 1100 595P91 Type 1 and Type 2 normalize and temper or 19001975 10401080 . . . 13501470 730800Cquench an
47、d temper 19001975 10401080 . . . 13501470 730800P92 normalize and temper 19001975 10401080D13501470 730800P93 normalize and temper 19602140 10701170 . . . 13801455 750790P122 normalize and temper 19001975 10401080 . . . 13501470 730800P911 normalize and temper 19001975 10401080D13651435 740780AWhere
48、 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 S7 is specified by the purchaser.DAccelerated cooling from the n
49、ormalizing temperature shall be permitted for section thicknesses greater than 3 in. 75 mm.A335/A335M 18a4NOTE 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 slive
