1、Designation: A455/A455M 12a (Reapproved 2017)Standard Specification forPressure Vessel Plates, Carbon Steel, High-StrengthManganese1This standard is issued under the fixed designation A455/A455M; 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 high-tensile strength carbon-manganese steel plates intended for we
3、lded pressure vessels.1.2 This steel is usually made to a semi-killed or cappeddeoxidation practice; however, at the purchasers or the steelproducers option, the steel may be made silicon-killed oraluminum-killed.1.3 The maximum thickness of plates furnished under thisspecification shall be34 in. 20
4、 mm.1.4 For plates produced from coil and furnished withoutheat treatment or with stress relieving only, the additionalrequirements, including additional testing requirements and thereporting of additional test results, of Specification A20/A20Mapply.1.5 The values stated in either inch-pound units
5、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 result in nonconformance with t
6、he specifi-cation.1.6 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 the World Trade Organization Te
7、chnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for SteelPlates for Pressure Vessels3. General Requirements and Ordering Information3.1 Material supplied to this material specification shallconform to Specification A
8、20/A20M. These requirements out-line the testing and retesting methods and procedures, permit-ted variations in dimensions, and mass, quality and repair ofdefects, marking, loading, and ordering information.3.2 In addition to the basic requirements of thisspecification, certain supplementary require
9、ments 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 Coils are excluded from qualification to
10、this specifica-tion until they are processed into finished plates. Platesproduced from coil means plates that have been cut toindividual lengths from coil. The processor directly controls, oris responsible for, the operations involved in the processing ofcoils into finished plates. Such operations i
11、nclude decoiling,leveling, cutting to length, testing, inspection, conditioning,heat treatment (if applicable), packaging, marking, loading forshipment, and certification.NOTE 1For plates produced from coil and furnished without heattreatment or with stress relieving only, three test results are rep
12、orted foreach qualifying coil. Additional requirements regarding plates from coilare described in Specification A20/A20M.3.4 If the requirements of this specification are in conflictwith the requirements of Specification A20/A20M, the require-ments of this specification shall prevail.4. Heat Treatme
13、nt4.1 Plates are normally supplied in the as-rolled condition.The plates may be ordered normalized or stress relieved, orboth.1This 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 Stee
14、l Plates for Boilers and Pressure Vessels.Current edition approved Nov. 1, 2017. Published November 2017. Originallyapproved in 1961. Last previous edition approved in 2012 as A455/A455M 12a.DOI: 10.1520/A0455_A0455M-12AR17.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
15、cation SA-455/SA-455M 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 AS
16、TM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Sta
17、ndards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15. Chemical Composition5.1 The steel shall conform to the chemical requirementsgiven in Table 1.6. Mechanical Properties6.1 Tension TestThe plates, as represented by the tensiontest
18、 specimens, shall conform to the requirements given inTable 2.7. Keywords7.1 carbon steel; high-strength steel plate for pressure pur-poses; welded pressure vesselsSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order. A list ofstandardized suppl
19、ementary requirements for use at the option of the purchaser is included inSpecification A20/A20M. Those that are considered suitable for use with this specification are listedbelow by title.S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons.TABLE 1 Chemical RequirementsElements Compos
20、ition, %Carbon, maxA,B0.33Manganese:CHeat analysis 0.851.20Product analysis 0.791.30Phosphorus, maxA0.025Sulfur, maxA0.025Silicon:DHeat analysis 0.10 maxProduct analysis 0.13 maxAApplies to both heat and product analyses.BWhen the silicon is higher than 0.10 %, the carbon maximum shall be 0.28 %.CFo
21、r each reduction of 0.01 percentage point below the specified maximum forcarbon, and increase of 0.06 percentage point above the specified maximum formanganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 %by product analysis.DAt the purchasers or the producers option, silicon m
22、ay be 0.40 % max on heatanalysis, 0.45 % max on product analysis.TABLE 2 Tensile RequirementsThicknessUp to 0.375 in.9.5 mmOver 0.375 to 0.580 in.15 mmOver 0.580 to 0.750 in.20 mmTensile strength, ksi MPa 7595 515655 7393 505640 7090 485620Yield strength, min, ksi MPa 38 260 37 255 35 240Elongation
23、in 8 in. 200 mm, min, %A15 15 15Elongation in 2 in. 50 mm, min, %A22 22 22ASee Specification A20/A20M for elongation adjustments.A455/A455M 12a (2017)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Use
24、rs of this 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
25、 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 addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technic
26、al committee, 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
27、, 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 12a (2017)3
