ASTM_A_592_-_A_592M_-_10_2015.pdf

Designation:A592/A592M10(Reapproved 2015)Standard Specification forHigh-Strength Quenched and Tempered Low-Alloy SteelForged Parts for Pressure Vessels1This standard is issued under the fixed designation A592/A592M;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 This specification2covers high-strength quenched andtempered low-alloy steel forged parts for pressure vessels.Themaximum thickness of forgings under this specification shallbe 112in.38 mm for GradeA,and 4 in.100 mm for GradesE and F.NOTE1These grades are similar to corresponding grades in Specifi-cation A517/A517M.1.2 Although no provision is made for supplementary re-quirements in this standard,the supplementary requirements inSpecification A788/A788M may be considered by the pur-chaser.1.3 Welding technique is of fundamental importance and itis presupposed that welding procedures will be in accordancewith approved methods for the class of material used.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5 Unless the order specifies the applicable“M”specifica-tion designation,the material shall be furnished to the inch-pound units.2.Referenced Documents2.1 ASTM Standards:3A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA517/A517M Specification for Pressure Vessel Plates,AlloySteel,High-Strength,Quenched and TemperedA788/A788M Specification for Steel Forgings,General Re-quirementsE112 Test Methods for Determining Average Grain Size3.Ordering Information and General Requirements3.1 In addition to the ordering information required bySpecification A788/A788M,the purchaser shall include withthe inquiry and order the following information:3.1.1 A detailed drawing,a sketch,or written description ofthe forging.3.1.2 The charpy impact test temperature if a test tempera-ture lower than 32F 0C is required.3.1.3 Additional heat treatment cycles to be applied to themechanical test specimens following removal from the heat-treated forging or special forged test block.3.1.4 Required supplementary requirement(s)from Specifi-cation A788/A788M.3.2 Material supplied to this specification shall conform tothe requirements of Specification A788/A788M,which out-linesadditionalorderinginformation,manufacturingrequirements,testing and retesting methods and procedures,marking,certification,product analysis variations,and addi-tional supplementary requirements.Failure to comply with therequirements of Specification A788/A788M constitutes non-conformance with this specification.3.3 If the requirements of this specification are in conflictwith the requirements of Specification A788/A788M,therequirements of this specification shall prevail.4.Materials and Manufacture4.1 Melting ProcessThe steel shall be made in accordancewith the Melting Process Section of Specification A788/A788M.4.2 Grain SizeThe steel shall be fully killed,fine grained(ASTM No.5 or finer),as determined in accordance with TestMethods E112,Plate IV.4.3 DiscardSufficient discard shall be made from eachingot to ensure freedom from piping and excessive segregation.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.06 on Steel Forgings and Billets.Current edition approved March 1,2015.Published March 2015.Originallyapproved in 1968.Last previous edition approved in 2010 as A592/A592M 10.DOI:10.1520/A0592_A0592M-10R15.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-592/SA-592M 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 States1 4.4 The finished product shall be a hot-worked forging asdefined by Specification A788/A788M,and shall be forged asclose as practicable to the finished shape and size.5.Heat Treatment5.1 After forging and before reheating,the forgings shall becooled to provide substantially complete transformation ofaustenite.Heat treatment for properties shall consist of heatingthe forgings to not less than 1650F 900C,quenching in aliquid medium,and tempering at 1150F 620C minimum,with a holding time of 1 h/in.1 h/25 mm minimum,but in nocase less than1