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SA 369 2007
  2007 SECTION II, PART A SA-369/SA-369M SPECIFICATION FOR CARBON AND FERRITIC ALLOYSTEEL FORGED AND BORED PIPE FORHIGH-TEMPERATURE SERVICE SA-369/SA-369M (Identical with ASTM Specification A 369/A 369M-02 except for the deletion of the reference to Grade FP36 in 5.4.1.) 1. Scope1.1  This specification covers heavy-wall carbon andalloy steel pipe (Note 1) made from turned and boredforgings and is intended for high-temperature service. Pipeordered under this specification shall be suitable for bend-ing and other forming operations and for fusion welding.Selection will depend on design, service conditions,mechanical properties and high-temperature character-istics. NOTE 1 — The use of the word “pipe” throughout the several sectionsof this specification is used in the broad sense and intended to mean pipeheaders, or leads.NOTE 2 — The dimensionless designator NPS (nominal pipe size) hasbeen substituted in this standard for such traditional terms as “nominaldiameter,” “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 anoptionalnatureareprovided. Thesesupplementary require-mentscall for additional teststo bemade, and when desiredshall be so stated in the order, together with the numberof such tests required. 1.4  The values stated in either inch-pound units or SIunits are to be regarded separately as standard. Within thetext, the SI units are shown in brackets. The values statedin each system are not exact equivalents; therefore, eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwo systemsmay resultin nonconformancewith the specification. The inch-pound units shall applyunless the “M” designation of this specification is specifiedin the order. 2. Referenced Documents2.1  ASTM Standards: A 999/A 999MSpecificationforGeneralRequirementsforAlloy and Stainless Steel Pipe 637 E 290 Test Method for Bend Testing of Material for Duc-tilityE 381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and Forgings 2.2  ASME Boiler and Pressure Vessel Code: Section IX Welding Qualifications 2.3  ANSI Standard: B46.1 Surface Texture 3. Ordering Information3.1  Orders for material to this specification shouldinclude the following, as required, to describe the desiredmaterial adequately: 3.1.1  Quantity (feet, centimeters, or number of lengths), 3.1.2  Name of material (forged and bored pipe), 3.1.3  Grade (Table 1), 3.1.4  Size (inside diameter and minimum wallthickness), 3.1.5  Length (Permissible Variations in Length Sec-tion of Specification A 999/A 999M), 3.1.6  End finish (Section 13), 3.1.7  Optionalrequirements(Sections8,Supplemen-tary Requirements S1 to S6; 13.2), 3.1.8  Test report required (Certification Section of Specification A 999/A 999M), 3.1.9  Specification designation, and 3.1.10  Special requirements or exceptions to thisspecification. Copyright ASME International Provided by IHS under license with ASME Licensee=Occidental Chemical Corp New sub account/5910419101 Not for Resale, 08/13/2007 15:18:29 MDT No reproduction or networking permitted without license from IHS  SA-369/SA-369M 2007 SECTION II, PART A 4. General Requirements4.1  Material furnished under this specification shallconform to the applicable requirements of the current edi-tion of Specification A 999/A 999M, unlessotherwise pro-vided herein. 5. Materials and Manufacture5.1  Discard: 5.1.1  A sufficient discard shall be made from eachingot to secure freedom from injurious defects. The steelshall have a homogeneous structure. 5.2  Manufacture: 5.2.1  Material for forging shall consist of ingots orof blooms, billets, or solid-rolled bars forged or rolled froman ingot, and cut to the required length by a process thatwill not produce injurious defects in the forging. 5.2.2  The material shall be forged (Note 3) by ham-mering or pressing, and shall bebrought asnearly aspracti-cable to the finished shape and size by hot working. NOTE 3 — The cross-sectional area of the solid forging shall have areduction by forging or by rolling and forging from that of the ingot inthe ratio of not less than 3 to 1. 5.2.3  Unless otherwise specified, the final forgingoperation shall be followed by a treatment suitable to thegrade as specified in 5.4. 5.3  Machining: 5.3.1  All forgings shall have both the inner and outersurfaces machined. 5.3.2  Afterheattreatment,thepipeshallbemachinedto a finish with a roughness value no greater than 250  in.[6.4   m] arithmetical average deviation (AA), terms asdefined in ANSI B46.1-1962, unless otherwise specified. 5.4  Heat Treatment: 5.4.1  All pipe of the grades shown in Table 1 otherthan FPA, FPB, FP1, FP2, FP12, FP91, and FP92 shall bereheated and furnished in the full-annealed or normalizedand tempered condition. If furnished in the normalized andtemperedcondition(Note4),thetemperaturefortemperingshall be 1250°F [680°C] or higher for Grades FP5, FP9,FP21, and FP22, and 1200°F [650°C] or higher forGrade FP11. NOTE 4 — It is recommended that the temperature for tempering shouldbe at least 100°F [50°C] above the intended service temperature; conse-quently, 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 heattreatment shall be either normalized or shall be given astressrelievingtreatmentat1200to1300°F[650to705°C].PipeinGradesFP1,FP2,andFP12,asafinalheattreatment 638 shallbegivenastress-relievingtreatmentat1200to1300°F[650 to 705°C]. NOTE 5 — Certain of the ferritic steels covered by this specificationtend to harden if cooled rapidly from above their critical temperature.Some will air harden, that is, become hardened to an undesirable degreewhen cooled in air from high temperatures. Therefore, operations involv-ing heating 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 S6 is specifiedby the purchaser, Grade FP91 shall be normalized andtempered by reheating within the temperature range from1900 to 2000°F [1040 to 1095°C], followed by air coolingand tempering at a subcritical temperature of 1350°F[730°C] minimum. 5.4.4  Except when Supplementary Requirements S6is specified by the purchaser, Grade FP92 shall be normal-ized and tempered by reheating within the temperature of 1900°F [1040°C] minimum, followed by air cooling andtempering at a subcritical temperature of 1350°F [730°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 heat of steel shall be made bythe steel manufacturer to determine the percentages of the elements specified. If secondary melting processes areemployed, the heat analysis shall be obtained from oneremelted ingot or the product of one remelted ingot of eachprimary melt. The chemical composition thus determined,or that determined from a product analysis made by thetubular product manufacturer, shall conform to the require-ments specified. 7.2  In the case of large ingots poured from two or moreheats, the weighted average of the chemical determinationsof the several heats, made in accordance with 7.1, shallconform to the requirements specified in Section 6. 8. Product Analysis8.1  At the request of the purchaser, a product analysisshall be made by the manufacturer on every heat. 8.2  The results of these analyses shall be reported tothe purchaser or his representative, and shall conform tothe requirements specified in Section 6. 8.3  Iftheanalysisofoneof thetestsspecifiedinSection7 or Section 8 does not conform to the requirements speci-fied in Section 6 an analysis of each billet or pipe from Copyright ASME International Provided by IHS under license with ASME Licensee=Occidental Chemical Corp New sub account/5910419101 Not for Resale, 08/13/2007 15:18:29 MDT No reproduction or networking permitted without license from IHS --` `   ,`   ,  ,` ` `   ,` `   ,  ,`   ,`   ,` `   ,`   ,` ` `   ,  ,  ,-` -`   ,  ,`   ,  ,`   ,`   ,  ,` ---  2007 SECTION II, PART A SA-369/SA-369M the same heat may be made, and all billets or pipes con-forming to the requirements shall be accepted. 9. Tensile Requirements9.1  The material shall conform to the requirementsas to tensile properties prescribed in Table 2. Tests foracceptance shall be made after final heat treatment of theforging. 10. Mechanical Tests Required10.1  Transverse or Longitudinal Tension Test   —Onetestshallbemadeonaspecimenfromoneendofonelengthof pipe representing each heat in each heat-treatment lot. 10.2  Flattening Test —   For pipe NPS 14 or less, anddiameter to wall thickness ratios of more than 7.0, a flat-tening test shall be carried out in accordance with Specifi-cation A 999/A 999M. A test shall be carried out on aspecimen taken from one end of each length of pipe. 10.3  Bend Test —   For pipe NPS 14 or NPS wherediameters to wall thickness ratio is 7.0 or less, a bend testshall be carried out in accordance with Test Method E 290.Unless otherwise specified, the test specimens shall betaken in a transverse direction. The diameter of the pinshall be  2  ⁄  3 t   for longitudinal specimens or 1 1  ⁄  3 t   for transversespecimens, where  t   is the specimen thickness. The bendtest specimens shall be bent at room temperature through180° without cracking. One bend test shall be taken fromone end of each length of pipe. 11. Workmanship11.1  The pipe shall conform to the sizes and shapesspecified by the purchaser. 639 12. Ends12.1  Pipe ends shall be machined as specified in thepurchase order. 13. Finish13.1  The finished pipe shall be reasonably straight andshall have a workmanlike finish. 13.2  Repair of defects by welding shall be permittedonly subject to the approval of the purchaser. Defects shallbe thoroughly chipped or ground out before welding. Onlyqualified operators and procedures in accordance with theASME Boiler and Pressure Vessel Code, Section IX, shallbe used. Local or full heat treatment in accordance with5.4 shall followwelding. Local grinding following weldingand retreating shall be considered as meeting the require-ments of 5.3. 14. Product Marking14.1  In addition to the marking prescribed in Specifica-tion A 999/A 999M, the marking shall include the wallthickness, piece mark, length, and additional symbol “S”if the pipe conforms to the supplementary requirementsspecified in Supplementary Requirements S1 to S5, andthe heat number or the manufacturer’s number by whichthe heat can be identified. Indentation stamping, insteadof stenciling, will be permitted only with the writtenapproval of the purchaser. Copyright ASME International Provided by IHS under license with ASME Licensee=Occidental Chemical Corp New sub account/5910419101 Not for Resale, 08/13/2007 15:18:29 MDT No reproduction or networking permitted without license from IHS --` `   ,`   ,  ,` ` `   ,` `   ,  ,`   ,`   ,` `   ,`   ,` ` `   ,  ,  ,-` -`   ,  ,`   ,  ,`   ,`   ,  ,` ---  SA-369/SA-369M 2007 SECTION II, PART A TABLE 1CHEMICAL REQUIREMENTS Composition, %Grade FPA FPB FP1 FP2 Carbon 0.25 max 0.30 max 0.10–0.20 0.10–0.20Manganese 0.27–0.93 0.29–1.06 0.30–0.80 0.30–0.61Phosphorus, max 0.035 0.035 0.025 0.025Sulfur, max 0.035 0.035 0.025 0.025Silicon 0.10 min 0.10 min 0.10–0.50 0.10–0.30Chromium . . . . . . . . . 0.50–0.81Molybdenum . . . . . . 0.44–0.65 0.44–0.65 Grade FP5 FP9 FP11 FP12 Carbon 0.15 max 0.15 max 0.05–0.15 0.05–0.15Manganese 0.30–0.60 0.30–0.60 0.30–0.60 0.30–0.61Phosphorus, max 0.025 0.030 0.025 0.025Sulfur, max 0.025 0.030 0.025 0.025Silicon 0.50 max 0.50–1.00 0.50–1.00 0.50 maxChromium 4.00–6.00 8.00–10.00 1.00–1.50 0.80–1.25Molybdenum 0.45–0.65 0.90–1.10 0.44–0.65 0.44–0.65 Grade FP21 FP22 FP91 FP92 Carbon 0.05–0.15 0.05–0.15 0.08–0.12 0.07–0.13Manganese 0.30–0.60 0.30–0.60 0.30–0.60 0.30–0.60Phosphorus, max 0.025 0.025 0.025 0.020Sulfur, max 0.025 0.025 0.025 0.010Silicon 0.50 max 0.50 max 0.20–0.50 0.50 maxChromium 2.65–3.35 1.90–2.60 8.00–9.50 8.50–9.50Molybdenum 0.80–1.06 0.87–1.13 0.85–1.05 0.30–0.60Others: W 1.50–2.00Ni 0.40 max V 0.15–0.25V 0.18–0.25 Cb 0.04–0.09Cb 0.06–0.10 N 0.030–0.070N 0.03–0.07 Ni 0.40 maxAl 0.04 max Al 0.040 maxB 0.001–0.006 TABLE 2TENSILE REQUIREMENTS Grade FPA FPB FP1, FP2 FP12 FP91 FP92 All Others Tensile strength, min; ksi [MPa] 48 [330] 60 [415] 55 [380] 60 [415] 85 [585] 90 [620] 60 [415]Yield strength, min; ksi [MPa] 30 [210] 35 [240] 30 [210] 32 [220] 60 [415] 64 [440] 30 [210] Elongation RequirementsFPA FPB FP91 and FP92 All OthersLongitu- Trans- Longitu- Trans- Longitu- Trans- Longitu- Trans-Grade dinal verse dinal verse dinal verse dinal verse Elongation in 2 in. or 50 mm, min, %:Basic minimum elongation for wall  5  ⁄  16  35 25 30 17 27 18 30 20in. [8 mm] and over in thickness,strip tests, and for all small sizestested in full-sectionWhen standard round 2 in. or 28 20 22 12 20 13 22 1450 mm gage length test specimen isused 640 Copyright ASME International Provided by IHS under license with ASME Licensee=Occidental Chemical Corp New sub account/5910419101 Not for Resale, 08/13/2007 15:18:29 MDT No reproduction or networking permitted without license from IHS
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