1、Designation: A209/A209M 03 (Reapproved 2012)Standard Specification forSeamless Carbon-Molybdenum Alloy-Steel Boiler andSuperheater Tubes1This standard is issued under the fixed designation A209/A209M; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification2covers several grades of minimum-wall-thickness, seamless, carbon-mol
3、ybdenum alloy-steel,boiler and superheater tubes.1.2 This specification covers tubes12 to 5 in. 12.7 to 127mm inclusive, in outside diameter and 0.035 to 0.500 in. 0.9to 12.7 mm, inclusive, in minimum wall thickness.1.3 An optional supplementary requirement is provided and,when desired, shall be so
4、stated in the order.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 mustbe used independently of the other. Com
5、bining 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:3A1016/A1016M Specification for General Requirements forFerriti
6、c Alloy Steel, Austenitic Alloy Steel, and StainlessSteel Tubes3. General Requirements3.1 Product furnished under this specification shall conformto the requirements of Specification A1016/A1016M, includ-ing any supplementary requirements that are indicated in thepurchase order. Failure to comply wi
7、th the general require-ments of Specification A1016/A1016M constitutes nonconfor-mance with this specification. In case of conflict with therequirements of this specification and Specification A1016/A1016M, this specification shall prevail.4. Materials and Manufacture4.1 Steelmaking PracticeThe stee
8、l shall be killed.4.2 The tubes shall be made by the seamless process andshall be either hot-finished or cold-finished, as specified.4.3 Heat TreatmentHot-finished tubes shall be heat treatedat a temperature of 1200 F 650 C or higher. Cold-finishedtubes shall, after the final cold finishing, be heat
9、 treated at atemperature of 1200 F 650 C or higher, or tubing may befurnished in the full-annealed, isothermal annealed, or normal-ized and tempered condition. If furnished in the normalizedand tempered condition, the minimum tempering temperatureshall be 1200 F 650 C.5. Chemical Composition5.1 The
10、steel shall conform to the requirements given inTable 1.5.2 Product Analysis5.2.1 An analysis shall be made by the manufacturer of onebillet or one tube from each heat. The chemical compositionthus determined, shall conform to the requirements given inTable 1.5.2.2 If the original test for product a
11、nalysis fails, retests oftwo additional billets or tubes shall be made. Both retests forthe elements in question shall meet the requirements of thespecification; otherwise all remaining material in the heat or lot(See 7.1) shall be rejected or, at the option of the producer, eachbillet or tube may b
12、e individually tested for acceptance. Billetsor tubes that do not meet the requirements of the specificationshall be rejected.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 Stai
13、nless and Alloy Steel Tubular Products.Current edition approved March 1, 2012. Published November 2012. Originallyapproved in 1938. Last previous edition approved in 2007 as A209/A209M 03(2007). DOI: 10.1520/A0209_A0209M-03R12.2For ASME Boiler and Pressure Vessel Code application see related Specifi
14、ca-tion SA-209 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.Copyright ASTM Inte
15、rnational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16. Mechanical Properties6.1 Tensile Requirements6.1.1 The material shall conform to the requirements givenin Table 2.6.1.2 Table 3 gives the computed minimum elongationvalues for each132-in. 0.8-mm decreas
16、e in wall thickness.Where the wall thickness lies between two values shownabove, the minimum elongation value shall be determined bythe following equation:E 5 48t115.00 E 5 1.87t115.00# (1)where:E = elongation in 2 in. 50 mm, %, and,t = actual thickness of specimen, in. mm.6.2 Hardness RequirementsT
17、he tubes shall have a hard-ness not exceeding the values given in Table 4.6.3 Number of Tests6.3.1 Tension TestOne tension test shall be made on aspecimen for lots of not more than 50 tubes. Tension tests shallbe made on specimens from two tubes for lots of more than 50tubes (See 7.2)6.3.2 Flattenin
18、g TestOne flattening test shall be made onspecimens from each end of one finished tube, not the one usedfor the flaring test, from each lot (See 7.1)6.3.3 Flaring TestOne flaring test shall be made onspecimens from each end of one finished tube, not the one usedfor the flattening test, from each lot
19、 (See 7.1)6.3.4 Hardness TestBrinell or Rockwell hardness testsshall be made on specimens from two tubes from each lot (See7.2)7. Sampling7.1 Flattening, Flaring, and Product AnalysisForflattening, flaring, and product analysis requirements, the termlot applies to all tubes prior to cutting of the s
20、ame nominal sizeand wall thickness that are produced from the same heat ofsteel. When final heat treatment is in a batch-type furnace, a lotshall include only those tubes of the same size and from thesame heat that are heat treated in the same furnace charge.When the final heat treatment is in a con
21、tinuous furnace, thenumber of tubes of the same size and from the same heat in alot shall be determined from the size of the tubes given in Table5.7.2 Tension and Hardness TestsFor tension and hardnesstests, the term lot applies to all tubes prior to cutting, of thesame nominal diameter and wall thi
22、ckness that are producedfrom the same heat of steel. When final heat treatment is in abatch-type furnace, a lot shall include only those tubes of thesame size and the same heat that are heat treated in the samefurnace charge. When the final heat treatment is in a continuousfurnace, a lot shall inclu
23、de all tubes of the same size and heat,heat treated in the same furnace at the same temperature, timeat heat, and furnace speed.TABLE 1 Chemical Composition RequirementsElement Composition, %Grade T1 Grade T1a Grade T1bCarbon 0.100.20 0.150.25 0.14 maxManganese 0.300.80 0.300.80 0.300.80Phosphorus,
24、max 0.025 0.025 0.025Sulfur, max 0.025 0.025 0.025Silicon 0.100.50 0.100.50 0.100.50Molybdenum 0.440.65 0.440.65 0.440.65TABLE 2 Tensile RequirementsGradeT1GradeT1bGradeT1aTensile strength, min, ksi MPa 55 380 53 365 60 415Yield strength, min, ksi MPa 30 205 28 195 32 220Elongation in 2 in. or 50 mm
25、, min, % 30 30 30For longitudinal strip tests a deductionshall be made for each132-in.0.8- mm decrease in wall thicknessbelow516 in. 8 mm from thebasic minimum elongation of thefollowing percentage1.50A1.50A1.50AWhen standard round 2-in. or 50-mmgage length or smaller proportion-ally sized specimen
26、with the gagelength equal to 4D (four times thediameter) is used22 22 22ATable 3 gives the computed minimum values.TABLE 3 Computed Minimum ValuesWall Thickness Elongation in 2 in. or 50mm, min, %Ain. mm516 (0.312) 8 30932 (0.281) 7.2 2914 (0.250) 6.4 27732 (0.219) 5.6 26316 (0.188) 4.8 24532 (0.156
27、) 4 2218 (0.125) 3.2 21332 (0.094) 2.4 20116 (0.062) 1.6 18ACalculated elongation requirements shall be rounded to the nearest wholenumber.TABLE 4 Hardness RequirementsBrinell HardnessNumber (Tubes 0.200in. 5.1 mm and over inWall Thickness), HBWRockwell HardnessNumber (Tubes less than0.200 in. 5.1 m
28、m inWall Thickness), HRBGrade T 1 146 80Grade T 1a 153 81Grade T 1b 137 77TABLE 5 Number of Tubes in a Lot Heat Treated by theContinuous ProcessSize of Tube Size of Lot2 in. 50.8 mm and over in outside diameter and0.200 in. 5.1 mm and over in wall thicknessnot more than 50 tubes2 in. 50.8 mm and ove
29、r in outside diameter andunder 0.200 in. 5.1 mm in wall thicknessnot more than 75 tubesLess than 2 in. 50.8 mm but over 1 in. 25.4 mmin outside diameternot more than 75 tubes1 in. 25.4 mm or less in outside diameter not more than 125 tubesA209/A209M 03 (2012)28. Forming Operations8.1 Tubes when inse
30、rted in the boiler shall stand expandingand beading without showing cracks or flaws. Superheatertubes when properly manipulated shall stand all forging,welding, and bending operations necessary for applicationwithout developing defects.9. Product Marking9.1 In addition to the marking prescribed in S
31、pecificationA1016/A1016M, the marking shall include whether the tube ishot-finished or cold-finished.10. Keywords10.1 boiler tubes; carbon-molybdenum; seamless steeltube; steel tube; superheater tubesSUPPLEMENTARY REQUIREMENTSThe following supplementary requirement shall apply only when specified by
32、 the purchaser in theinquiry, contract, or order.S1. Surface ConditionS1.1 If pickling or shot blasting, or both, are required, thisshall be specifically stated in the order. Details of this supple-mental requirement shall be agreed upon between the manu-facturer and the purchaser.ASTM International
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34、n responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be ad
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36、t the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A209/A209M 03 (2012)3
