ASTM_A_494_-_A_494M_-_17.pdf

Designation:A494/A494M17Standard Specification forCastings,Nickel and Nickel Alloy1This standard is issued under the fixed designation A494/A494M;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers nickel,nickel-copper,nickel-copper-silicon,nickel-molybdenum,nickel-chromium,andnickel-molybdenum-chromium alloy castings for corrosion-resistant service.1.2 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 nonconformancewith the standard.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA488/A488M Practice for Steel Castings,Welding,Qualifi-cations of Procedures and PersonnelA732/A732M Specification for Castings,Investment,Car-bon and Low Alloy Steel for General Application,andCobalt Alloy for High Strength at Elevated TemperaturesA781/A781M Specification for Castings,Steel and Alloy,Common Requirements,for General Industrial UseA957/A957M Specification for Investment Castings,Steeland Alloy,Common Requirements,for General IndustrialUseE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE30 Test Methods for ChemicalAnalysis of Steel,Cast Iron,Open-Hearth Iron,and Wrought Iron(Withdrawn 1995)3E38 Methods for Chemical Analysis of Nickel-Chromiumand Nickel-Chromium-Iron Alloys(Withdrawn 1989)3E76 Test Methods for Chemical Analysis of Nickel-CopperAlloys(Withdrawn 2003)3E354 Test Methods for Chemical Analysis of High-Temperature,Electrical,Magnetic,and Other Similar Iron,Nickel,and Cobalt Alloys3.Terminology3.1 Definitions:3.1.1 master heata single furnace charge of refined alloy,which may either be poured directly into castings or into remeltalloy for individual melts.3.1.2 meltsa single furnace charge poured into castings.When master heats are used to prepare melts,a melt analysisshall be reported.4.General Conditions for Delivery4.1 Except for investment castings,castings furnished tothis specification shall conform to the requirements of Speci-fication A781/A781M,including any supplementary require-ments that are indicated on the purchase order.Failure tocomply with the general requirements of Specification A781/A781M constitutes nonconformance with this specification.Incase of conflict between the requirements of this specificationand Specification A781/A781M,this specification shall pre-vail.4.2 Investment castings furnished to this specification shallconform to the requirements of Specification A957/A957M,including any supplementary requirements that are indicated inthe purchase order.Failure to comply with the general require-ments of Specification A957/A957M constitutes nonconfor-mance with this specification.In case of conflict between therequirements of this specification and Specification A957/A957M,Specification A957/A957M shall prevail.5.Ordering Information5.1 Orders for castings to this specification should includethe following information:5.1.1 Quantity,in pieces,and5.1.2 Grade designation(Table 1)and class(Table 2).1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved March 15,2017.Published March 2017.Originallyapproved in 1963.Last previous edition approved in 2015 as A494/A494M 15.DOI:10.1520/A0494_A0494M-17.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*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 international 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 TABLE 1 Chemical RequirementsNOTE1Values are maximum unless otherwise indicated.AlloyFamilyNiNi-CuNi-MoNi-CrOtherGradeCZ100M25SM30CAM30HM35-1AM35-2N3MN7MN12MVCU5MCuCCW2MCW6MCW6MC CW12MWCX2MCX2MWCY40CY5SnBiMUNSNu