ASTM_A_989_-_A_989M_-_15.pdf

Designation:A989/A989M15Standard Specification forHot Isostatically-Pressed Alloy Steel Flanges,Fittings,Valves,and Parts for High Temperature Service1This standard is issued under the fixed designation A989/A989M;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.Scope*1.1 This specification covers hot isostatically-pressed,pow-der metallurgy,alloy steel piping components for use inpressure systems.Included are flanges,fittings,valves,andsimilar parts made to specified dimensions or to dimensionalstandards,such as in ASME Specification B16.5.1.2 Several grades of alloy steels are included in thisspecification.1.3 Supplementary requirements are provided for use whenadditional testing or inspection is desired.These shall applyonly when specified individually by the purchaser in the order.1.4 This specification is expressed in both inch-pound unitsand in SI units.Unless the order specifies the applicable“M”specification designation(SI units),however,the material shallbe furnished to inch-pound units.1.5 The values stated in either inch-pound units or SI unitsare to be regarded separately as the standard.Within the text,the SI units are shown in brackets.The values stated in eachsystem are not exact equivalents;therefore,each system mustbe used independently of the other.Combining values from thetwo systems may result in nonconformance with the specifi-cation.1.6 The following safety hazards caveat pertains only to testmethods portions,8.1,8.2,and 9.5 9.7 of this specification:This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and to determine the applicability of regula-tory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A275/A275M Practice for Magnetic Particle Examination ofSteel ForgingsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA961/A961M Specification for Common Requirements forSteel Flanges,Forged Fittings,Valves,and Parts forPiping ApplicationsB311 Test Method for Density of Powder Metallurgy(PM)Materials Containing Less Than Two Percent PorosityE165 Practice for Liquid Penetrant Examination for GeneralIndustryE340 Test Method for Macroetching Metals and AlloysE606 Test Method for Strain-Controlled Fatigue Testing2.2 MSS Standard:SP 25 Standard Marking System for Valves,Fittings,Flanges,and Unions32.3 ASME Specifications and Boiler and Pressure VesselCodes:B16.5 Dimensional Standards for Steel Pipe Flanges andFlanged Fittings42.4 ASME Section IX Welding Qualifications:SFA-5.5 Specification for Low-Alloy Steel Covered Arc-Welding Electrodes43.Terminology3.1 Definitions of Terms Specific to This Standard:1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved March 1,2015.Published April 2015.Originallyapproved in 1998.Last previous edition approved in 2013 as A989/A989M13.DOI:10.1520/A0989_A0989M-15.2For 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.3Available from Manufacturers Standardization Society of the Valve and FittingsIndustry(MSS),127 Park St.,NE,Vienna,VA 22180-4602,http:/www.mss-.4Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Two Park Ave.,New York,NY 10016-5990,http:/www.asme.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 States1 3.1.1 can,nthe container used to encapsulate the powderduring the pressure consolidation process that is removedpartially or fully from the final part.3.1.2 compact,nthe consolidated powder from one canthat may be used to make one or more parts.3.1.3 consolidation,nthe bonding of adjacent powderparticles in a compact under pressure by heating to a tempera-ture below the melting point of the powder.3.1.4 fill stem,nthe part of the compact used to fill the canthat is not usually integral to the part produced.3.1.5 hot isostatic-pressing,na process for simultaneouslyheating and forming a compact in which the powder iscontained in a sealed formable enclosure,usually made frommetal,and the so-contained powder is subjected to equalpressure from all directions at a temperature high enough topermit plastic deformatio