ASTM_A_351_-_A_351M_-_16.pdf

Designation:A351/A351M16Standard Specification forCastings,Austenitic,for Pressure-Containing Parts1This standard is issued under the fixed designation A351/A351M;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 specification2covers austenitic steel castings forvalves,flanges,fittings,and other pressure-containing parts(Note 1).NOTE1Carbon steel castings for pressure-containing parts are cov-ered by Specification A216/A216M,low-alloy steel castings by Specifi-cation A217/A217M,and duplex stainless steel castings by SpecificationA995/A995M.1.2 A number of grades of austenitic steel castings areincluded in this specification.Since these grades possessvarying degrees of suitability for service at high temperaturesor in corrosive environments,it is the responsibility of thepurchaser to determine which grade shall be furnished.Selec-tion will depend on design and service conditions,mechanicalproperties,and high-temperature or corrosion-resistantcharacteristics,or both.1.2.1 Because of thermal instability,Grades CE20N,CF3A,CF3MA,and CF8A are not recommended for service attemperatures above 800F 425C.1.3 Supplementary requirements of an optional nature areprovided for use at the option of the purchaser.The Supple-mentary requirements shall apply only when specified indi-vidually by the purchaser in the purchase order or contract.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.1.4.1 This specification is expressed in both inch-poundunits and in SI units;however,unless the purchase order orcontract specifies the applicable M specification designation(SI units),the inch-pound units shall apply.Within the text,theSI units are shown in brackets or parentheses.2.Referenced Documents2.1 ASTM Standards:3A216/A216M Specification for Steel Castings,Carbon,Suit-able for Fusion Welding,for High-Temperature ServiceA217/A217M Specification for Steel Castings,MartensiticStainless and Alloy,for Pressure-Containing Parts,Suit-able for High-Temperature ServiceA488/A488M Practice for Steel Castings,Welding,Qualifi-cations of Procedures and PersonnelA703/A703M Specification for Steel Castings,GeneralRequirements,for Pressure-Containing PartsA985/A985M Specification for Steel Investment CastingsGeneral Requirements,for Pressure-Containing PartsA995/A995M Specification for Castings,Austenitic-Ferritic(Duplex)Stainless Steel,for Pressure-Containing Parts2.2 Manufacturers Standardization Society of the Valve andFittings Industry Standard:4SP-55 Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Components(VisualMethod)3.General Conditions for Delivery3.1 Other than investment castings Material furnished tothis specification shall conform to the requirements of Speci-fication A703/A703M,including any supplementary require-ments that are indicated in the purchase order.Failure tocomply with the general requirements of Specification A703/A703M constitutes nonconformance with this specification.Incase of conflict between the requirements of this specificationand Specification A703/A703M,this specification shall pre-vail.3.2 Investment Castings Material furnished to this speci-fication shall conform to the requirements of SpecificationA985/A985M,including any supplementary requirements thatare indicated in the purchase order.Failure to comply with the1This 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 May 1,2016.Published May 2016.Originallyapproved in 1952.Last previous edition approved in 2015 as A351/A351M 15.DOI:10.1520/A0351_A0351M-16.2For ASME Boiler and Pressure Vessel Code applications,see related Specifi-cation SA-351/SA-351M 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.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry(MSS),127 Park St.,NE,Vienna,VA 22180-4602,http:/www.mss-.*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 general requirements of Specification A985/A985M consti-tutes nonco