1、Designation: A737/A737M 17Standard 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 revision, the year of
2、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. Scope*1.1 This specification2covers high-strength low-alloy steelplates for service in welded pressure vessels and pipingcompon
3、ents.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 provides a minim
4、um 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 for each grade.1.5
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 The values stat
6、ed 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 systems may r
7、esult in nonconformance with the specifi-cation.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by t
8、he World Trade Organization TechnicalBarriers to Trade (TBT) Committee.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 Specificati
9、on for 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 Sp
10、ecification 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
11、requirements 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 specif
12、ication 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 T
13、he material 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.1This specification is under the jurisdiction of ASTM Committee A01 on
14、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 Nov. 1, 2017. Published November 2017. Originallyapproved in 1976. Last previous edition approved in 2013 as A737/A737M 09(2013).
15、DOI: 10.1520/A0737_A0737M-17.2For 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.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards
16、volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was develo
17、ped 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 Technical Barriers to Trade (TBT) Committee.15.2 If approved by t
18、he purchaser, cooling rates faster thanair cooling are permitted 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
19、shall normalize plates con-forming to Grade C within the range from 1650 to 1850oF 900to 1010oC 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 Ta
20、ble 1 unless otherwisemodified in accordance with Supplementary Requirement S17,Vacuum Carbon-Deoxidized 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
21、nominal plate thicknesses of34 in. 20 mm andunder, when requirements for elongation in 2 in. 50 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 s
22、hows the greatest elongation.SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply 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
23、 for use with this specification arelisted below by title. Other tests may be performed by agreement 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 Examina
24、tion in accordance with Specifica-tion A435/A435M,S11. Ultrasonic Examination in accordance with Specifica-tion A577/A577M,S12. Ultrasonic Examination in accordance with Specifica-tion A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.TABLE 1 Chemical RequirementsNOTE 1Where “” appears in this tabl
25、e, 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 1.071.62Phosphorus, 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 . . . . .
26、. 0.040.11 0.030.12Columbium(Niobium),Bmax0.05 0.05 0.05 0.05Nitrogen, max . . . . . . 0.03 0.03AThe maximum manganese may be increased to 1.60 % on heat analysis and1.72 % on product analysis, provided that the carbon content on heat analysisdoes not exceed 0.18 %.BColumbium and niobium are interch
27、angeable names for the same element andboth names are acceptable for use in A01 specifications.TABLE 2 Tensile RequirementsGrade B Grade CYield strength, min, ksi MPa 50 345 60 415Tensile strength, ksi MPa 7090 485620 80100 550690Elongation in 8 in. 200 mm,min, %A18 18Elongation in 2 in. 50 mm,min,
28、%A23 23ASee Specification A20/A20M for elongation adjustment.A737/A737M 172SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A737/A737M 09 (2013) that may impact the use of this standard. (Approved Nov. 1, 2017.)(1) Revised Table 1
29、to include niobium.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement
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