1、Designation:A1049/A1049M10(Reapproved 2015)Standard Specification forStainless Steel Forgings,Ferritic/Austenitic(Duplex),forPressure Vessels and Related Components1This standard is issued under the fixed designation A1049/A1049M;the number immediately following the designation indicates theyear of
2、original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers ferritic/austenitic(duplex)stainless ste
3、el forgings for boilers,pressure vessels,and asso-ciated equipment in grades that are also found in SpecificationA182/A182M.1.2 The purchaser may specify in the order or contract anyappropriate supplementary requirements that are provided inSpecification A788/A788M.1.3 Unless the order specifies the
4、 applicable“M”specifica-tion designation the material shall be furnished to the inch-pound units.1.4 The values stated in either inch-pound or SI(metric)units are to be regarded separately as standard.Within the textand tables,the SI units are shown in brackets.The values statedin each system may no
5、t be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the specification.2.Referenced Documents2.1 ASTM Standards:2A182/A182M Specification for Forged or Rolled Alloy andStainless Steel Pipe Flanges,F
6、orged Fittings,and Valvesand Parts for High-Temperature ServiceA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA388/A388M Practice for Ultrasonic Examination of SteelForgingsA745/A745M Practice for Ultrasonic Examination of Aus-tenitic Steel ForgingsA788/A788M Specification
7、for Steel Forgings,General Re-quirementsA923 Test Methods for Detecting Detrimental IntermetallicPhase in Duplex Austenitic/Ferritic Stainless SteelsE165/E165M Practice for Liquid Penetrant Examination forGeneral IndustryG48 Test Methods for Pitting and Crevice Corrosion Resis-tance of Stainless Ste
8、els and Related Alloys by Use ofFerric Chloride Solution2.2 Other Standards:ASME Boiler and Pressure Vessel Code3NACE MR0175/ISO15156 Petroleum and Natural GasIndustriesMaterials for Use in H2SContaining Envi-ronments in Oil and Gas Production43.Ordering Information and General Requirements3.1 Mater
9、ial 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 requirem
10、ents.3.1.1 If the requirements of this specification are in conflictwith the requirements of Specification A788/A788M,therequirements of this specification shall prevail.3.1.2 The purchaser may require that the forging be ma-chined to an approved heat treatment drawing indicating theproposed configu
11、ration of the forging at the time of thespecified solution heat treatment.3.1.3 The purchaser may approve the use of an alternateliquid quenching medium for cooling from the solution treat-ment temperature.3.2 The purchaser shall specify the acceptance criteria foreither Methods B or C of Test Metho
12、ds A923,if supplementaryrequirement S1 is selected.3.3 The purchaser shall specify the required minimumpitting resistance equivalent number(PREN)value determinedaccording to the applicable equation in Table 1.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Stee
13、l 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 2006.Last previous edition approved in 2010 as A1049/A1049M 10.DOI:10.1520/A1049_A1049M-10R15.2For referenced AST
14、M 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.3Available from American Society of Mechanical Engineers(ASME),Two ParkAve.,New York,
15、NY 10016-5990,http:/www.asme.org.4Available from NACE International,15835 Park Ten Place,Houston,TX77084,http:/www.nace.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.4 When Practice A745/A745M is the basis for ultrasonicexaminatio
16、n in accordance with 7.1,the purchaser shall specifywhether Quality levels 1 or 2 form the basis for acceptance.Supplementary requirement S4 permits the purchaser tospecify Practice A388/A388M in lieu of Practice A745/A745M,in which case the purchaser must also specify theacceptance criteria.3.5 When Supplementary requirement S3,for pitting corro-sion testing,of Test Methods G48 is specified,the purchasershall identify the method and test temperature to be used.3.6 When Supplementary requirement
