ASTM_B_366_-_B_366M_-_19.pdf

Designation:B366/B366M19Standard Specification forFactory-Made Wrought Nickel and Nickel Alloy Fittings1This standard is issued under the fixed designation B366/B366M;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 wrought welding fittings forpressure piping,factory-made from nickel and nickel alloys.Threaded fittings as covered inASME B16.11 are also coveredby this specification.The term welding applies to butt-weldingor socket-welding parts such as 45 and 90 elbows,180 bends,caps,tees,reducers,lap-joint stub ends,and other types,ascovered by ASME B16.9,ASME B16.11,MSS SP-43,MSSSP-95,and MSS SP-97.1.1.1 Several grades of nickel and nickel alloys are includedin this specification.Grades are designated with a prefix,WPorCR,based on the applicable ASME or MSS dimensional andrating standards.1.1.2 Class WP fittings are those manufactured to therequirements of ASME B16.9,B16.11.1.1.3 For each of the WP nickel and nickel alloy grades,several classes of fittings are covered to indicate whetherseamless or welded construction was utilized.Class designa-tions are also utilized to indicate the nondestructive test methodand extent of nondestructive examination(NDE).Table 1 isgeneral summary of the fitting classes applicable to all WPgrades of nickel and nickel alloys covered by this specification.There are no classes for the CR grades.Specific requirementsare covered elsewhere.1.2 This specification does not apply to cast welding fit-tings.1.3 Optional supplementary requirements are provided forfittings where a greater degree of examination is desired.Thesesupplementary requirements call for additional tests.Whendesired,one or more of these may be specified in the order.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.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety,health,and environmental practices,and determine the applicabilityof regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on 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:2B127 Specification for Nickel-Copper Alloy(UNS N04400)Plate,Sheet,and StripB160 Specification for Nickel Rod and BarB161 Specification for Nickel Seamless Pipe and TubeB162 Specification for Nickel Plate,Sheet,and StripB163 Specification for Seamless Nickel and Nickel AlloyCondenser and Heat-Exchanger TubesB164 Specification for Nickel-Copper Alloy Rod,Bar,andWireB165 Specification for Nickel-Copper Alloy(UNS N04400)Seamless Pipe and TubeB166 Specification for Nickel-Chromium-Aluminum Alloy,Nickel-Chromium-IronAlloys,Nickel-Chromium-Cobalt-Molybdenum Alloy,Nickel-Iron-Chromium-TungstenAlloy,and Nickel-Chromium-Molybdenum-Copper AlloyRod,Bar,and WireB167 Specification for Nickel-Chromium-Aluminum Alloys(UNS N06699),Nickel-Chromium-Iron Alloys(UNSN06600,N06601,N06603,N06690,N06693,N06025,N06045,andN06696),Nickel-Chromium-Cobalt-MolybdenumAlloy(UNSN06617),Nickel-Iron-Chromium-Tungsten Alloy(UNS N06674),and1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.07 on Refined Nickel and Cobalt and Their Alloys.Current edition approved April 1,2019.Published May 2019.Originallyapproved in 1961.Last previous edition approved in 2017 as B366/B366M 17.DOI:10.1520/B0366_B366M-19.2For 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.*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 an