1、Designation: A 369/A 369M 06Standard Specification forCarbon and Ferritic Alloy Steel Forged and Bored Pipe forHigh-Temperature Service1This standard is issued under the fixed designationA 369/A 369M; the number immediately following the designation indicates the yearof original adoption or, in the
2、case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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 tur
3、ned 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.NO
4、TE 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 “nominaldiameter,” “
5、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 be so statedin
6、 the order, together with the number of such tests required.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mus
7、tbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation. The inch-pound units shall apply unless the “M”designation of this specification is specified in the order.2. Referenced Documents2.1 ASTM Standards:3A 999/A 999M Specifica
8、tion for General Requirements forAlloy and Stainless Steel PipeE 290 Test Methods for Bend Testing of Material forDuctilityE 381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and Forgings2.2 ASME Boiler and Pressure Vessel Code:Section 1X Welding Qualifications42.3 ANSI Standard:B 46.1 Sur
9、face Texture53. 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 bored pipe),3.1.3 Grade (Table 1),3.1.4 S
10、ize (inside diameter and minimum wall thickness),3.1.5 Length (Permissible Variations in Length Section ofSpecification A 999/A 999M),3.1.6 End finish (13),3.1.7 Optional requirements (Sections 8, SupplementaryRequirements S1 to S6; 13.2),3.1.8 Test report required (Certification Section of Specifi-
11、cation A 999/A 999M),3.1.9 Specification designation, and3.1.10 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 A 999/A 999M, unless o
12、therwise providedherein.5. Materials and Manufacture5.1 Discard: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 approve
13、d Sept. 1, 2006. Published September 2006. Originallyapproved in 1953. Last previous edition approved in 2002 as A 369/A 369M 02.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-369 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website,
14、 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), ASMEInternational Headquarters, Three Park Ave., Ne
15、w 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700
16、, West Conshohocken, PA 19428-2959, United States.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 bar
17、s forged or rolled from aningot, and cut 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
18、 cross-sectional area of the solid forging 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
19、Machining:5.3.1 All forgings shall have 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
20、.5.4 Heat Treatment:5.4.1 All pipe of the 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
21、 shall be 1250 F680 C or higher for Grades 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 manufac
22、turer if the servicetemperature is to be 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 ast
23、ress-relieving treatment at 1200 to 1300 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 whencooled in air from high tempera
24、tures. Therefore, operations involvingheating such steels above their critical 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 norma
25、lized andtempered by reheating within the temperature range from 1900to 1975 F 1040 to 1080 C, followed by air cooling andtempering in the temperature range of 1350 to 1470 F 730 to800 C.TABLE 1 Chemical RequirementsGrade Composition, %FPA FPB FP1 FP2Carbon 0.25 max 0.30 max 0.100.20 0.100.20Mangane
26、se 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 0.050.15 0.050.15Manganese 0.300.60 0.300.
27、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 FP92Carbon 0.050.15 0.050.15 0.080.12 0.070.13Manga
28、nese 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 1.502.00Ni 0.40 max V 0.150.25V 0.180.25 Cb
29、 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 0.0010.006A 369/A 369M 0625.4.4 Except when Supplementary Requirement S6 is speci-fied by the purchaser, Grade FP92 shall be normalized andtempered by reheating within the te
30、mperature range of 1900 to1975 F 1040 to 1080 C, followed by air cooling andtempering in the temperature range of 1350 to 1470 F 730 to800 C.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1.7. Heat Analysis7.1 An analysis of each
31、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 composition thus
32、 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 the chemical determinations ofthe several heats, made in accordance with
33、 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 conform to ther
34、equirements 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 shall be a
35、ccepted.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.10. Mechanical Tests Required10.1 Transverse or Longitudinal Tension TestOne testshall be made
36、on a specimen from one end of one length ofpipe representing each 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 SpecificationA 999/A 999M.A test shall be car
37、ried out on a specimen taken from one end ofeach length of pipe.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 E 290. Unlessotherwise specified, the test specimens shall be taken
38、in atransverse direction. The diameter of the pin shall be23 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
39、of pipe.11. 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
40、 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 ac
41、cordance 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 SpecificationA 999/A 999M, the marking shall include the wall thickness,piece mark, length, an
42、d additional 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 approv
43、al of the purchaser.TABLE 2 Tensile RequirementsGrade FPA FPB FP1, FP2 FP12 FP91 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 OthersLo
44、ngitu-dinalTrans-verseLongitu-dinalTrans-verseLongitu-dinalTrans-verseLongitu-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
45、2-in. or 50-mm gage lengthtest specimen is used28 20 22 12 20 13 22 14A 369/A 369M 063SUPPLEMENTARY REQUIREMENTSOne or more of the following supplementary requirements shall apply only when specified in thepurchase order. The purchaser may specify a different frequency of test or analysis than is pr
46、ovidedin the supplementary requirement. Subject to agreement between the purchaser and manufacturer,retest and retreatment provisions of these supplementary requirements may also be modified.S1. Additional Tension TestS1.1 An additional tension test shall be made on a specimenfrom one or each end of
47、 each pipe. If this supplementaryrequirement is specified, the number of tests per pipe requiredshall be specified. If a specimen from any length fails to meetthe required tensile properties (tensile, yield, and elongation),that length shall be rejected subject to retreatment in accor-dance with Spe
48、cificationA 999/A 999M and satisfactory retest.S2. Additional Flattening or Bend TestsS2.1 The appropriate flattening or bend test may be made onspecimens from both ends of each length of pipe. Crop endsmay be used. If the specimen from either end of any lengthfails to conform to the specific requir
49、ement, that length shall berejected.S3. Ultrasonic TestsS3.1 Each pipe shall be ultrasonically tested to determine itssoundness throughout the entire length of the pipe. Untilsuitable standards are established, the basis for rejection ofmaterial shall be a matter of agreement between the manufac-turer and purchaser.S4. Hydrostatic TestS4.1 A hydrostatic pressure test shall be applied as agreedupon by the manufacturer and purchaser.S5. Meta
