ASTM_A_782_-_A_782M_-_06.pdf

Designation:A 782/A 782M 06Standard Specification forPressure-Vessel Plates,Quenched-and-Tempered,Manganese-Chromium-Molybdenum-Silicon Zirconium AlloySteel1This standard is issued under the fixed designationA782/A782M;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(e)indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers high-strength quenched andtempered alloy steel plates intended for use in fusion weldedpressure vessels.1.2 Plates furnished under this specification are available inthree classes having different strength levels as follows:YieldTensileStrength,Strength,min,min,Classksi MPaksi MPa180 55097 670290 620107 7403100 690115 7951.3 The thickness of plates under this specification is limitedto a maximum of 2 in.50 mm.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 is tobe used independently of the other without combining valuesfrom the two systems.2.Referenced Documents2.1 ASTM Standards:2A 20/A 20M Specification for General Requirements forSteel Plates for Pressure VesselsA 435/A 435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA 577/A 577M Specification for Ultrasonic Angle-BeamExamination of Steel PlatesA 578/A 578M Specification for Straight-Beam UltrasonicExamination of Plain and Clad Steel Plates for SpecialApplications3.General Requirements and Ordering Information3.1 Plates supplied to this material specification shall con-form to Specification A 20/A 20M.These requirements outlinethe testing and retesting methods and procedures,permissiblevariations in dimensions and mass,quality and repair ofdefects,marking,loading,etc.3.2 Specification A 20/A 20M also establishes the rules forthe ordering information that should be complied with whenpurchasing material to this specification.3.3 In addition to the basic requirements of this specifica-tion,certain supplementary requirements are available whenadditional control testing or examination is required to meetend use requirements.The purchaser is referred to the listedsupplementary requirements in this specification and to thedetailed requirements in Specification A 20/A 20M.3.4 If the requirements of this specification are in conflictwith the requirements of Specification A 20/A 20M,the re-quirements of this specification shall prevail.4.Manufacture4.1 Steelmaking PracticeThe steel shall be killed andconform to the fine austenitic grain size requirement ofSpecification A 20/A 20M.5.Heat Treatment5.1 All plates shall be heat treated by the material manufac-turer by heating to not less than 1650F 900C,quenching inwater or oil and tempering at not less than 1150F 620C fornot less than12h.6.Chemical Requirements6.1 The steel shall conform to the chemical requirementsshown in Table 1.7.Mechanical Requirements7.1 Tension Tests: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 Steel Plates for Boilers and Pressure Vessels.Current edition approved March 1,2006.Published March 2006.Originallyapproved in 1981.Last previous edition approved in 2001 as A 782/A 782M 90(2001).2For 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.7.1.1 RequirementsThe material as represented by thetension-test specimens shall conform to the requirementsshown in Table 2.7.1.2 Test Methods:7.1.2.1 For material34in.20 mm and under in thickness,the test specimen shall be the 112-in.40-mm wide rectangulartest specimen.7.1.2.2 For material over34in.either the full thicknessrectangular test specimen or the12-in.12.5-mm round testspecimen may be used.7.1.2.3 When the 112-in.40-mm wide rectangular testspecimen is used,the elongation is measured in a 2-in.or50-mm gage length which includes the fracture.7.2 Impact Properties Requirements:7.2.1 Transverse Charpy V-notch impact test specimensshall have a lateral expansion opposite the notch of not lessthan 0.015 in.0.38 mm.7.2.2 The test temperature shall be agreed upon between themanufacturer and the purchaser,but shall not be higher than32F 0C.8.Keywords8.1 alloy steel;alloy steel plate;pressure-containing parts;pressure vessel steel;steel plates;steel plates for pressurevessel applicationsSUPPLEMENTARY REQUIREMENTSSupplementary requirements