ASTM_A_455_-_A_455M_-_12A.pdf

Designation:A455/A455M12AStandard 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 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.Scope*1.1 This specification2covers high-tensile strength carbon-manganese steel plates intended for welded 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 be34in.20 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 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 the specifi-cation.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 A20/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 Inadditiontothebasicrequirementsofthisspecification,certain supplementary 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 Coils are excluded from qualification to 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 include decoiling,leveling,cutting to length,testing,inspection,conditioning,heat treatment(if applicable),packaging,marking,loading forshipment,and certification.NOTE1For plates produced from coil and furnished without heattreatment or with stress relieving only,three test results are reported 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 Treatment4.1 Plates are normally supplied in the as-rolled condition.The plates may be ordered normalized or stress relieved,orboth.5.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 specimens,shall conform to the requirements given inTable 2.7.Keywords7.1 carbon steel;high-strength steel plate for pressure pur-poses;welded pressure vessels1This 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 Nov.1,2012.Published March 2013.Originallyapproved in 1961.Last previous edition approved in 2012 as A455/A455M 12.DOI:10.1520/A0455_A0455M-12A.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-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.*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 States1Copyright by ASTM Intl(all rights reserved);SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.A list ofstandardized supplementary 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