1、Designation: A369/A369M 11 (Reapproved 2016)Standard Specification forCarbon and Ferritic Alloy Steel Forged and Bored Pipe forHigh-Temperature Service1This standard is issued under the fixed designation A369/A369M; the number immediately following the designation indicates the yearof original adopt
2、ion or, in the case of revision, the 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.1. Scope1.1 This specification2covers heavy-wall carbon and alloysteel pipe (Note 1)
3、made from turned and bored forgings and isintended for high-temperature service. Pipe ordered under thisspecification shall be suitable for bending and other formingoperations and for fusion welding. Selection will depend ondesign, service conditions, mechanical properties and high-temperature chara
4、cteristics.NOTE 1The use of the word “pipe” throughout the several sections ofthis specification is used in the broad sense and intended to mean pipeheaders, or leads.NOTE 2The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such traditional terms as “nomina
5、ldiameter,” “size,” and “nominal size.”1.2 Several grades of ferritic steels are covered. Theircompositions are given in Table 1.1.3 Supplementary requirements (S1 to S6) of an optionalnature are provided. These supplementary requirements call foradditional tests to be made, and when desired shall b
6、e so statedin the order, together with the number of such tests required.1.4 The values stated in either SI units or 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,
7、 each systemshall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with thestandard. The inch-pound units shall apply unless the “M”designation of this specification is specified in the order.2. Referenced Documents2.1 ASTM Standards:3A999/A999M
8、Specification for General Requirements forAlloy and Stainless Steel PipeE290 Test Methods for Bend Testing of Material for Ductil-ityE381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and Forgings2.2 ASME Boiler and Pressure Vessel Code:4Section IX2.3 ANSI Standard:5B 46.1 Surface Texture2
9、.4 AWS Specifications:6A5.5/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 Steel Elec-trodes for Gas Shielded Arc WeldingA5.29/A5.2
10、9M Low-Alloy Steel Electrodes for Flux CoredArc Welding3. Ordering Information3.1 Orders for material to this specification should includethe following, as required, to describe the desired materialadequately:3.1.1 Quantity (feet, centimetres, or number of lengths),3.1.2 Name of material (forged and
11、 bored pipe),3.1.3 Grade (Table 1),3.1.4 Size (inside diameter and minimum wall thickness),3.1.5 Length (Permissible Variations in Length Section ofSpecification A999/A999M),3.1.6 Verification of tensile and hardness properties atmid-thickness for Grade FP91 (9.2)3.1.7 End finish (13),3.1.8 Optional
12、 requirements (Sections 8, SupplementaryRequirements S1 to S6; 13.2),1This 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 edition ap
13、proved Sept. 1, 2016. Published September 2016. Originallyapproved in 1953. Last previous edition approved in 2011 as A369/A369M 11.DOI: 10.1520/A0369_A0369M-11R16.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-369 in Section II of that Code.3For referenced ASTM
14、 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 Society of Mechanical Engineers (ASME), ASMEInternationa
15、l Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.6Available from American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126, http:/www.aws.
16、org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.9 Test report required (Certification Section of Specifi-cation A999/A999M),3.1.10 Specification designation, and3.1.11 Special requirements or exceptions to this specifica-tion.
17、4. General Requirements4.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A999/A999M, unless otherwise provided herein.5. Materials and Manufacture5.1 Discard:5.1.1 A sufficient discard shall be made from each ingot to
18、secure freedom from injurious defects. The steel shall have ahomogeneous structure.5.2 Manufacture:5.2.1 Material for forging shall consist of ingots or ofblooms, billets, or solid-rolled bars forged or rolled from aningot, and cut to the required length by a process that will notproduce injurious d
19、efects in the forging.5.2.2 The material shall be forged (Note 3) by hammering orpressing, and shall be brought as nearly as practicable to thefinished shape and size by hot working.NOTE 3The cross-sectional area of the solid forging shall have areduction by forging or by rolling and forging from th
20、at of the ingot in theratio of not less than 3 to 1.5.2.3 Unless otherwise specified, the final forging operationshall be followed by a treatment suitable to the grade asspecified in 5.4.5.3 Machining:5.3.1 All forgings shall have both the inner and outersurfaces machined.5.3.2 After heat treatment,
21、 the pipe shall be machined to afinish with a roughness value no greater than 250-in. 6.4-marithmetical average deviation (AA), terms as defined in ANSIB 46.1-1962, unless otherwise specified.5.4 Heat Treatment:5.4.1 All pipe of the grades shown in Table 1 other thanFPA, FPB, FP1, FP2, FP12, FP91, a
22、nd FP92 shall be reheatedand furnished in the full-annealed or normalized and temperedcondition. If furnished in the normalized and tempered condi-tion (Note 4), the temperature for tempering shall be 1250 F680 C or higher for Grades FP5, FP9, FP21, and FP22, and1200 F 650 C or higher for Grades FP3
23、6 and FP11.NOTE 4It 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 if the servicetemperature is to be over 1100 F 600 C.5.4.2 Pipe in Grades FPA and FPB as a final heat t
24、reatmentshall be either normalized or shall be given a stress relievingtreatment at 1200 to 1300 F 650 to 705 C. Pipe in GradesFP1, FP2, and FP12, as a final heat treatment shall be given astress-relieving treatment at 1200 to 1300 F 650 to 705 C.TABLE 1 Chemical RequirementsGrade Composition, %FPA
25、FPB FP1 FP2Carbon 0.25 max 0.30 max 0.100.20 0.100.20Manganese 0.270.93 0.291.06 0.300.80 0.300.61Phosphorus, max 0.035 0.035 0.025 0.025Sulfur, max 0.035 0.035 0.025 0.025Silicon 0.10 min 0.10 min 0.100.50 0.100.30Chromium . . . 0.500.81Molybdenum . . 0.440.65 0.440.65Grade FP5 FP9 FP11 FP12Carbon
26、0.15 max 0.15 max 0.050.15 0.050.15Manganese 0.300.60 0.300.60 0.300.60 0.300.61Phosphorus, max 0.025 0.030 0.025 0.025Sulfur, max 0.025 0.030 0.025 0.025Silicon 0.50 max 0.501.00 0.501.00 0.50 maxChromium 4.006.00 8.0010.00 1.001.50 0.801.25Molybdenum 0.450.65 0.901.10 0.440.65 0.440.65Grade FP21 F
27、P22 FP91 FP92Carbon 0.050.15 0.050.15 0.080.12 0.070.13Manganese 0.300.60 0.300.60 0.300.60 0.300.60Phosphorus, max 0.025 0.025 0.025 0.020Sulfur, max 0.025 0.025 0.025 0.010Silicon 0.50 max 0.50 max 0.200.50 0.50 maxChromium 2.653.35 1.902.60 8.009.50 8.509.50Molybdenum 0.801.06 0.871.13 0.851.05 0
28、.300.60Others: W 1.502.00Ni 0.40 max V 0.150.25V 0.180.25 Cb 0.040.09Cb 0.060.10 N 0.0300.070N 0.030.07 Ni 0.40 maxAl 0.02 max Al 0.02 maxTi 0.01 max Ti 0.01 maxZr 0.01 max Zr 0.01 maxB 0.0010.006A369/A369M 11 (2016)2NOTE 5Certain of the ferritic steels covered by this specification tendto harden if
29、 cooled rapidly from above their critical temperature. Somewill air harden, that is, become hardened to an undesirable degree whencooled in air from high temperatures. Therefore, operations involvingheating such steels above their critical temperatures, such as welding,hot-bending and other forming
30、operations, should be followed by suitableheat treatment.5.4.3 Except when Supplementary Requirement S6 is speci-fied by the purchaser, Grade FP91 shall be normalized andtempered by reheating within the temperature range from 1900to 1975 F 1040 to 1080 C, followed by air cooling andtempering in the
31、temperature range of 1350 to 1470 F 730 to800 C.5.4.4 Except when Supplementary Requirement S6 is speci-fied by the purchaser, Grade FP92 shall be normalized andtempered by reheating within the temperature range of 1900 to1975 F 1040 to 1080 C, followed by air cooling andtempering in the temperature
32、 range of 1350 to 1470 F 730 to800 C.5.5 Repair by Welding5.5.1 Weld repair shall be permitted only subject to theapproval of the purchaser and in accordance with SpecificationA999/A999M.5.5.2 All repair welds in FP91 shall be made with one of thefollowing welding processes and consumables: SMAW, A5
33、.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + neutral flux;GTAW, A5.28/A5.28M ER90S-B9; and FCAWA5.29/A5.29ME91T1-B9. In addition, the sum of the Ni + Mn content of allwelding consumables used to weld repair FP91 shall notexceed 1.0 %.5.5.3 All repair welds in FP92 shall be made using weldingconsumable
34、s meeting the chemical requirements for the gradein Table 1.5.5.4 After weld repair, Grades FP91 and FP92 shall be heattreated at 1350-1470 F 730-800 C.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1.7. Heat Analysis7.1 An analys
35、is of each heat of steel shall be made by thesteel manufacturer to determine the percentages of the ele-ments specified. If secondary melting processes are employed,the heat analysis shall be obtained from one remelted ingot orthe product of one remelted ingot of each primary melt. Thechemical compo
36、sition thus determined, or that determinedfrom a product analysis made by the tubular productmanufacturer, shall conform to the requirements specified.7.2 In the case of large ingots poured from two or moreheats, the weighted average of the chemical determinations ofthe several heats, made in accord
37、ance with 7.1, shall conformto the requirements specified in Section 6.8. Product Analysis8.1 At the request of the purchaser, a product analysis shallbe made by the manufacturer on every heat.8.2 The results of these analyses shall be reported to thepurchaser or his representative, and shall confor
38、m to therequirements specified in Section 6.8.3 If the analysis of one of the tests specified in Section 7or Section 8 does not conform to the requirements specified inSection 6 an analysis of each billet or pipe from the same heatmay be made, and all billets or pipes conforming to therequirements s
39、hall be accepted.9. Tensile Requirements9.1 The material shall conform to the requirements as totensile properties prescribed in Table 2. Tests for acceptanceshall be made after final heat treatment of the forging.9.2 For Grade FP91, when requested by the purchaser, thetensile and hardness propertie
40、s shall be met and verified onmaterial taken from the half-thickness location.10. Mechanical Tests Required10.1 Transverse or Longitudinal Tension TestOne testshall be made on a specimen from one end of one length ofpipe representing each heat in each heat-treatment lot.10.2 Flattening TestFor pipe
41、NPS 14 or less, and diameterto wall thickness ratios of more than 7.0, a flattening test shallbe carried out in accordance with Specification A999/A999M.A test shall be carried out on a specimen taken from one end ofeach length of pipe.10.3 Bend TestFor pipe larger than NPS 14 or NPS wherediameters
42、to wall thickness ratio is 7.0 or less, a bend test shallbe carried out in accordance with Test Methods E290. Unlessotherwise specified, the test specimens shall be taken in aTABLE 2 Tensile RequirementsGrade FPA FPB FP1, FP2 FP12 FP91 FP92 All OthersTensile strength, min; ksi MPaYield strength, min
43、; ksi MPa48 33030 21060 41535 24055 38030 21060 41532 22085 58560 41590 62064 44060 41530 210Elongation RequirementsGradeFPA FPB FP91 and FP92 All OthersLongitu-dinalTrans-verseLongitu-dinalTrans-verseLongitu-dinalTrans-verseLongitu-dinalTrans-verseElongation in 2 in. or 50 mm, min, %:Basic minimum
44、elongation for wall516 in. 8 mmand over in thickness, strip tests, and for all smallsizes tested in full-section35 25 30 17 27 18 30 20When standard round 2-in. or 50-mm gage lengthtest specimen is used28 20 22 12 20 13 22 14A369/A369M 11 (2016)3transverse direction. The diameter of the pin shall be
45、23 t forlongitudinal specimens or 113 t for transverse specimens,where t is the specimen thickness. The bend test specimensshall be bent at room temperature through 180 withoutcracking. One bend test shall be taken from one end of eachlength of pipe.11. Workmanship11.1 The pipe shall conform to the
46、sizes and shapes speci-fied by the purchaser.12. Ends12.1 Pipe ends shall be machined as specified in thepurchase order.13. Finish13.1 The finished pipe shall be reasonably straight and shallhave a workmanlike finish.13.2 Repair of defects by welding shall be permitted onlysubject to the approval of
47、 the purchaser. Defects shall bethoroughly chipped or ground out before welding. Only quali-fied operators and procedures in accordance with the ASMEBoiler and Pressure Vessel Code, Section IX, shall be used.Local or full heat treatment in accordance with 5.4 shall followwelding. Local grinding foll
48、owing welding and retreating shallbe considered as meeting the requirements of 5.3.14. Product Marking14.1 In addition to the marking prescribed in SpecificationA999/A999M, the marking shall include the wall thickness,piece mark, length, and additional symbol “S” if the pipeconforms to the supplemen
49、tary requirements specified inSupplementary Requirements S1 to S5, and the heat number orthe manufacturers number by which the heat can be identified.Indentation stamping, instead of stenciling, will be permittedonly with the written approval of the purchaser.SUPPLEMENTARY REQUIREMENTSOne or more of the following supplementary requirements shall apply only when specified in thepurchase order. The purchaser may specify a different fre
