ASTM_A_736_-_A_736M_-_12.pdf

Designation:A736/A736M12Standard Specification forPressure Vessel Plates,Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Steel1This standard is issued under the fixed designation A736/A736M;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 low-carbon age-hardeningalloy steel plates for welded pressure vessels and pipingcomponents.Thespecificationcoversnickel-copper-chromium-molybdenum-columbium steel.1.2 Plates under this specification are available as follows:1.2.1 Available in Grade A,Class 3 only.1.2.1.1 Quenched and precipitation heat treated with aminimum specified tensile strength of 85 ksi for thinner platesand 75 and 70 ksi for thicker plates,with the minimum tensilestrength dependent upon the plate thickness.The maximumthickness of Grade A,Class 3 plates is limited only by thecapacity of the chemical composition and heat treatment tomeet the specified mechanical property requirements;however,current practice usually limits the maximum thickness to 8 in.200 mm.1.3 This specification is expressed in both inch-pound unitsand in SI units.However,unless the order specifies theapplicable“M”specification designation(SI units),the mate-rial shall be furnished in inch-pound units.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 mustbe used independently of the other.Combining values from thetwo systems may result in nonconformance with this 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.Materials and Manufacture4.1 The steel shall be killed and shall conform to the fineaustenitic grain size requirement of Specification A20/A20M.5.Heat Treatment5.1 The plates shall be quenched in a liquid medium from atemperature in the range from 1600 to 1700F 870 to 930Cand then precipitation heat treated at a temperature in the rangefrom 1000 to 1300F 540 to 705C for a time to bedetermined by the manufacturer or processor.5.2 If the purchaser elects to perform the thermal treatment,the plates shall be accepted on the basis of mill tests made fromtest coupons heat treated as specified in the purchase order.Ifthe test coupon heat treatment requirements are not specified inthe purchase order,the manufacturer or processor shall heat1This 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 January 2013.Originallyapproved in 1976.Last previous edition approved in 2007 as A736/A736M 03(2007).DOI:10.1520/A0736_A0736M-12.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-cation SA-736 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);treat the test coupons under conditions it considers appropriate.The manufacturer or processor shall inform the purchaser ofthe procedure followed in thermally treating the test coupons atthe mill.6