1、Designation:A209/A209M03(Reapproved 2017)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 case
2、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-molybdenum allo
3、y-steel,boiler and superheater tubes.1.2 This specification covers tubes12to 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 stated in the order
4、.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.Combining values from thetwo
5、 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 forFerritic Alloy Steel,Austenitic All
6、oy 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 with the general require-ments of S
7、pecification 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 steel shall be killed.4.2 The tubes shal
8、l 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 treated at atemperature of 1200 F 650 C
9、 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 steel shall conform to the requirements given
10、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 analysis fails,retests oftwo additional billets o
11、r 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 be individually tested for acceptance.Billetsor tubes t
12、hat 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 Stainless and Alloy Steel Tubular Products.Current edition
13、approved March 15,2017.Published March 2017.Originallyapproved in 1938.Last previous edition approved in 2012 as A209/A209M 03(2012).DOI:10.1520/A0209_A0209M-03R17.2For ASME Boiler and Pressure Vessel Code application see related Specifica-tion SA-209 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 194
15、28-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technic
16、al Barriers to Trade(TBT)Committee.1 6.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 decrease in wall thickness.Where the wall thickness lies between two values shownabove,the minimum elongation value shall be determined bythe following equation:E 5 48t115.00E 5 1.87t115.00#(1)where:E=elongation in 2 in.50 mm,%,and,t=actual thickness of specimen,in.m
