1、Designation: A369/A369M 11Standard 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 adoption or, in the cas
2、e 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. Scope*1.1 This specification2covers heavy-wall carbon and alloysteel pipe (Note 1) made from turned
3、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 characteristics.NOTE 1
4、The 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 “nominaldiameter,” “size
5、,” 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 be so statedin the
6、 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, each systemshall
7、 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 Specification for
8、 General Requirements forAlloy and Stainless Steel PipeE290 Test Methods for Bend Testing of Material for Duc-tilityE381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and Forgings2.2 ASME Boiler and Pressure Vessel Code:4Section 1X Welding Qualifications2.3 ANSI Standard:5B 46.1 Surface Te
9、xture2.4 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 WeldingA5.2
10、9/A5.29M 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 (forg
11、ed and 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 Op
12、tional requirements (Sections 8, SupplementaryRequirements S1 to S6; 13.2),3.1.9 Test report required (Certification Section of Specifi-cation A999/A999M),1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility
13、of SubcommitteeA01.10 on Stainless and Alloy Steel Tubular Products.Current edition approved Oct. 1, 2011. Published November 2011. Originallyapproved in 1953. Last previous edition approved in 2010 as A369/A369M10.DOI: 10.1520/A0369_A0369M-11.2For ASME Boiler and Pressure Vessel Code applications s
14、ee related Specifi-cation SA-369 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 volume information, refer to the standards Document Summary page onthe ASTM website.4
15、Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three 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
16、American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126, http:/www.aws.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.3.1.10 Specification designation,
17、 and3.1.11 Special requirements or exceptions to this specifica-tion.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.
18、1 Discard:5.1.1 A sufficient discard shall be made from each ingot tosecure 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
19、 to the required length by a process that will notproduce injurious defects 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 forgi
20、ng shall have areduction by forging or by rolling and forging from that 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
21、both the inner and outersurfaces machined.5.3.2 After heat treatment, 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 th
22、e grades shown in Table 1 other thanFPA, FPB, FP1, FP2, FP12, FP91, and 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 Grad
23、es FP5, FP9, FP21, and FP22, and1200 F 650 C or higher for Grades FP36 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
24、 over 1100 F 600 C.5.4.2 Pipe in Grades FPA and FPB as a final heat treatmentshall 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
25、 F 650 to 705 C.NOTE 5Certain of the ferritic steels covered by this specification tendto harden if cooled rapidly from above their critical temperature. Somewill air harden, that is, become hardened to an undesirable degree whenTABLE 1 Chemical RequirementsGrade Composition, %FPA FPB FP1 FP2Carbon
26、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 0.15 max 0.15 max
27、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 FP22 FP91 FP92Carbo
28、n 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 0.300.60Others: W 1
29、.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 112cooled in air from high temperatures. Therefore, operations involvingheating such steels above their critica
30、l temperatures, such as welding,hot-bending and other forming 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
31、F 1040 to 1080 C, followed by air cooling andtempering in the 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 1
32、080 C, followed by air cooling andtempering in the temperature 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 o
33、ne of thefollowing welding processes and consumables: SMAW, A5.5/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
34、All repair welds in FP92 shall be made using weldingconsumables 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 c
35、omposition prescribed in Table 1.7. Heat Analysis7.1 An analysis 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
36、 of one remelted ingot of each primary melt. Thechemical composition thus determined, or that determinedfrom a product analysis made by the tubular product manufac-turer, shall conform to the requirements specified.7.2 In the case of large ingots poured from two or moreheats, the weighted average of
37、 the chemical determinations ofthe several heats, made in accordance 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
38、reported to thepurchaser or his representative, and shall conform 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 b
39、e made, and all billets or pipes conforming to therequirements shall 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, wh
40、en requested by the purchaser, thetensile and hardness properties 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 ea
41、ch heat in each heat-treatment lot.10.2 Flattening TestFor pipe 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.
42、10.3 Bend TestFor pipe larger than NPS 14 or NPS wherediameters 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 atransverse direction. The diameter of the pin shall be23 t fo
43、rlongitudinal 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.TABLE 2 Tensile RequirementsGrade FPA FPB FP1, FP2 FP12 F
44、P91 FP92 All OthersTensile strength, min; ksi MPaYield strength, min; 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
45、-dinalTrans-verseElongation in 2 in. or 50 mm, min, %:Basic minimum 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/A3
46、69M 11311. Workmanship11.1 The pipe shall conform to the 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
47、welding shall be permitted onlysubject to the approval of 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 acc
48、ordance with 5.4 shall followwelding. Local grinding following 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 a
49、dditional symbol “S” if the pipeconforms to the supplementary 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 thep
