1、Designation:A781/A781M17Standard Specification forCastings,Steel and Alloy,Common Requirements,forGeneral Industrial Use1This standard is issued under the fixed designation A781/A781M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,t
2、he 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 specification covers a group of requirements thatare mandatory requirements of the following steel castin
3、gspecifications issued by ASTM.If the product specificationspecifies different requirements,the product specification shallprevail.ASTMDesignationTitle of SpecificationA27/A27MSteel Castings,Carbon,for General ApplicationA128/A128MSteel Castings,Austenitic ManganeseA148/A148MSteel Castings,High Stre
4、ngth,for Structural Pur-posesA297/A297MSteel Castings,Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant for GeneralApplicationA447/A447MSteel Castings,Chromium-Nickel-Iron Alloy(25-12 Class),for High-Temperature ServiceA494/A494MCastings,Nickel and Nickel AlloyA560/A560MCastings,Chromium-Nickel
5、AlloyA743/A743MCastings,Iron-Chromium,Iron-Chromium-Nickel,Corrosion Resistant,for General ApplicationA744/A744MCastings,Iron-Chromium-Nickel,CorrosionResistant,for Severe ServiceA747/A747MSteel Castings,Stainless,Precipitation Harden-ingA890/A890MCastings,Iron-Chromium-Nickel-MolybdenumCorrosion-Re
6、sistant,Duplex(Austenitic/Ferritic)for General ApplicationA915/A915MSteel Castings,Carbon and Alloy,Chemical Re-quirements Similar to Standard Wrought GradesA958/A958MSteel Castings,Carbon and Alloy,with TensileRequirements,Chemical Requirements Similiarto Standard Wrought GradesA1002Castings,Nickel
7、-Aluminum Ordered Alloy1.2 This specification also covers a group of supplementaryrequirements that may be applied to the above specifications asindicated therein.These are provided for use when additionaltesting or inspection is desired and apply only when specifiedindividually by the purchaser in
8、the order.1.3The requirements of the individual material specifica-tion and this general specification shall prevail in the sequencenamed.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
9、;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on
10、 Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A27/A27M Specification for Steel Castings,Carbon,forGeneral ApplicationA128/A128M Specificat
11、ion for Steel Castings,AusteniticManganeseA148/A148M Specification for Steel Castings,HighStrength,for Structural PurposesA297/A297M Specification for Steel Castings,Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant,for General ApplicationA370 Test Methods and Definitions for Mechanical Testingo
12、f Steel ProductsA380/A380M Practice for Cleaning,Descaling,and Passi-vation of Stainless Steel Parts,Equipment,and SystemsA447/A447M Specification for Steel Castings,Chromium-Nickel-Iron Alloy(25-12 Class),for High-TemperatureServiceA488/A488M Practice for Steel Castings,Welding,Qualifi-cations of P
13、rocedures and PersonnelA494/A494M Specification for Castings,Nickel and NickelAlloyA560/A560M Specification for Castings,Chromium-NickelAlloy1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of Subcommitte
14、eA01.18 on Castings.Current edition approved May 1,2017.Published May 2017.Originallyapproved in 1980.Last previous edition approved in 2016 as A781/A781M 16.DOI:10.1520/A0781_A0781M-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.
15、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 StatesThis in
16、ternational standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 A609/A609M Practice for Castings,Carbon,Low-Alloy,and Martensitic Stainless Steel,Ultrasonic ExaminationThereofA743/A743M Specification for Castings,Iron-Chromium,Iron-Chromium-Nickel,Corrosi