1、Designation: A737/A737M 09 (Reapproved 2013)Standard Specification forPressure Vessel Plates, High-Strength, Low-Alloy Steel1This standard is issued under the fixed designation A737/A737M; the number immediately following the designation indicates the yearof original adoption or, in the case of revi
2、sion, 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 high-strength low-alloy steelplates for service in welded pressure vessels
3、 and pipingcomponents.1.2 This material is particularly intended for piping andpressure vessel applications where high strength and improvedtoughness are required.1.3 Two grades, designated B and C, are covered by thisspecification. Grade B provides a minimum yield strength of50 ksi 345 MPa. Grade C
4、 provides a minimum yield strengthof 60 ksi 415 MPa.1.4 The maximum thickness of plates is limited only by thecapacity of the chemical composition and heat treatment tomeet the specified mechanical property requirements; however,current practice normally limits the maximum thickness to 4 in.100 mm f
5、or each grade.1.5 Grade C in the as-rolled condition is sensitive tocracking during flame cutting, transit, and handling, particu-larly in thicknesses over 2 in. 50 mm. Plates should not beshipped in the as-rolled condition only except by mutualagreement between the manufacturer and the purchaser.1.
6、6 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 the
7、two systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for SteelPlates for Pressure VesselsA435/A435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA577/A577M Specification for
8、 Ultrasonic Angle-Beam Ex-amination of Steel PlatesA578/A578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tions3. General Requirements and Ordering Information3.1 Material supplied to this specification shall conform tothe requirements of Specific
9、ation A20/A20M. These require-ments outline the testing and retesting methods and procedures,permitted variations in dimensions and mass, quality, repair ofdefects, marking, loading, and ordering information.3.2 In addition to the basic requirements of thisspecification, certain supplementary requir
10、ements are availablewhen additional control, testing, or examination is required tomeet end use requirements. The purchaser is referred to thelisted supplementary requirements in this specification and tothe detailed requirements in Specification A20/A20M.3.3 If the requirements of this specificatio
11、n are in conflictwith the requirements of Specification A20/A20M, the require-ments of this specification shall prevail.4. Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpecification A20/A20M.5. Heat Treatment5.1 The mat
12、erial shall be normalized by heating to a suitabletemperature which produces an austenitic structure, but notexceeding 1700F 925C, holding a sufficient time to attainuniform heat throughout the material, and cooling in air.5.2 If approved by the purchaser, cooling rates faster thanair cooling are pe
13、rmitted for improvement of strength ortoughness, provided the plates are subsequently tempered inthe temperature range from 1100 to 1300F 595 to 705C.5.3 When the fabricator elects to perform the heat treatmentin 5.1 and 5.2, the manufacturer shall normalize plates con-forming to Grade C within the
14、range from 1650 to 1850oF 9001This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.11 on Steel Plates for Boilers and Pressure Vessels.Current edition approved Oct. 1, 2013. Published Octobe
15、r 2013. Originallyapproved in 1976. Last previous edition approved in 2009 as A737/A737M 09.DOI: 10.1520/A0737_A0737M-13.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-737 in Section II of that code.3For referenced ASTM standards, visit the ASTM website, www.ast
16、m.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 19428-2959. United States1to 1010oC
17、prior to shipment for plates exceeding 2 in. 50mm in thickness unless otherwise agreed to.6. Chemical Requirements6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1 unless otherwisemodified in accordance with Supplementary Requirement S17,Vacuum Carbon-De
18、oxidized Steel, in Specification A20/A20M.7. Mechanical Requirements7.1 Tension TestsThe material as represented by the ten-sion test specimens shall conform to the requirements shown inTable 2.7.1.1 For nominal plate thicknesses of34 in. 20 mm andunder, when requirements for elongation in 2 in. 50
19、mm areto be determined, the 112-in. 40-mm wide rectangular speci-men may be used for the tension test, and the elongation maybe determined in a 2-in. 50-mm gage length that includes thefracture and that shows the greatest elongation.SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not appl
20、y unless specified in the purchase order.A list of standardized supplementary requirements for use at the option of the purchaser is includedin Specification A20/A20M. Several of those considered suitable for use with this specification arelisted below by title. Other tests may be performed by agree
21、ment between the supplier and thepurchaser.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons,S5. Charpy V-Notch Impact Tests,S8. Ultrasonic Examination in accordance with Specifica-tion A435/A435M,S11. Ultrasonic Examination in accordance with
22、 Specifica-tion A577/A577M,S12. Ultrasonic Examination in accordance with Specifica-tion A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this
23、standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years
24、 andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committe
25、e, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-
26、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 stand
27、ard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Chemical RequirementsNOTE 1Where “” appears in this table, there is no requirement.ElementComposition, %Grade B Grade CHeat Product Heat ProductCarbon, max 0.20 0.22 0.22 0.24Manganese 1.151.50A1.071.62A1.151.50 1.071.62
28、Phosphorus, max 0.025 0.025 0.025 0.025Sulfur, max 0.025 0.025 0.025 0.025Silicon 0.150.50 0.100.55 0.150.50 0.100.55Vanadium . . . . . . 0.040.11 0.030.12Columbium, max 0.05 0.05 0.05 0.05Nitrogen, max . . . . . . 0.03 0.03AThe maximum manganese may be increased to 1.60 % on heat analysis and1.72 %
29、 on product analysis, provided that the carbon content on heat analysisdoes not exceed 0.18 %.TABLE 2 Tensile RequirementsGrade B Grade CYield strength, min, ksi MPa 50 345 60 415Tensile strength, ksi MPa 709048562080100550690Elongation in 8 in. 200 mm,min, %A18 18Elongation in 2 in. 50 mm,min, %A23 23ASee Specification A20/A20M for elongation adjustment.A737/A737M 09 (2013)2
