ASTM_A_543_-_A_543M_-_09_2014.pdf

Designation:A543/A543M09(Reapproved 2014)Standard Specification forPressure Vessel Plates,Alloy Steel,Quenched andTempered Nickel-Chromium-Molybdenum1This standard is issued under the fixed designation A543/A543M;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.Scope1.1 Thisspecification2coversnickel-chromium-molybdenum alloy steel plates for use in the quenched andtempered condition,intended for the fabrication of weldedpressure vessels and other pressure equipment.These alloycompositions are normally considered for construction involv-ing plate thicknesses of 2 in.50 mm or greater.1.2 Material under this specification is available in twotypes,B and C.The material is also available in three classesas follows:ClassMinimum Tensile Strength,ksi MPa1105 7252115 795390 6201.3 The maximum thickness of plates is limited only by thecapacity of the chemical composition to meet the specifiedmechanical property requirements.1.4 The minimum plate thickness is316in.5 mm.1.5 These alloy steel plates in the as-rolled condition aresensitive to cracking during flame cutting,transit,and han-dling.They should be shipped in the as-rolled condition onlywith the mutual agreement of the manufacturer and thepurchaser or fabricator.1.6 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 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 VesselsA435/A435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA577/A577M Specification 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 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 If the requirements of this specification 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 All plates shall be heat treated by heating to a suitableaustenitizing temperature,holding for a sufficient time period1This 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 1,2014.Published March 2014.Originallyapproved in 1965.Last previous edition approved in 2009 as A543/A543M 09.DOI:10.1520/A0543_A0543M-09R14.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-cation SA-543 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 ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights reserved);to attain uniform temperature through the thickness andquenching in a suitable liquid medium by spraying or immer-sion.The plates shall then be tempered to produce the requiredproperties by heating to a suitable temperature not lower than1100F 595C with a holding time of not less than12h/in.1.2 min/mm of thickness but not less than12h.5.2 Plates over 4 in.100 mm in thickness shall receive aprior treatment of normalizing at,or water quenching from atemperature within the range from 1650 to 1850F 900 to1010C before the heat treatment specified in 5.1.5.3 When the fabricator elects to perform the heat treatmentin 5.1 and 5.2,the manufacturer shall normalize the plates at anappropriate temperature prior to shipment unless otherwiseagreed to.6.Chem