1、Designation:A815/A815M18Standard Specification forWrought Ferritic,Ferritic/Austenitic,and MartensiticStainless Steel Piping Fittings1This standard is issued under the fixed designation A815/A815M;the number immediately following the designation indicates the yearof original adoption or,in the case
2、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 two general classes,WP andCR,of wrought ferritic,ferritic/austenitic,an
3、d martensiticstainless steel fittings of seamless and welded constructioncovered by the latest revision of Specification A960/A960M.Fittings differing from these standards may be furnished inaccordance with Supplementary Requirement S58 of Specifi-cation A960/A960M.1.1.1 Class WP fittings are subdiv
4、ided into four subclasses:Classes WP-S,WP-W,WP-WX,and WP-WU.They aremanufactured to the requirements of Specification A960/A960M,and they shall have pressure ratings compatible with13.2.Class WP-S fittings are those manufactured from seam-less product by a seamless method of manufacture(markedwith c
5、lass symbol WP-S);Class WP-W fittings are those whichcontain welds where the fitting fabrication or constructionwelds have been radiographed(marked with class symbolWP-W);and Class WP-WX fittings are those which containwelds where all welds have been radiographed(marked withclass symbol WP-WX);and C
6、lass WP-WU fittings are thosewhich contain welds where all welds have been ultrasonicallytested(marked with class symbol WP-WU).1.1.2 Class CR fittings are those manufactured to therequirements of MSS SP-43,and they shall have pressureratings compatible with 13.3.1.2 This specification does not appl
7、y to cast fittings.1.3 Optional supplementary requirements are provided.When desired,one or more of these may be specified in theorder.1.4 This specification is expressed in both inch-pound unitsand in SI units.However,unless the order specifies theapplicable“M”specification designation SI units,the
8、 mate-rial shall be furnished to inch-pound units.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used in
9、dependently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.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 Int
10、ernational Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA388/A388M Practice for Ultrason
11、ic Examination of SteelForgingsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsA763 Practices for Detecting Susceptibility to IntergranularAttack in Ferritic Stainless SteelsA923 Test Methods for Detecting Detrimental IntermetallicPhase in Duplex Austenitic/Ferrit
12、ic Stainless SteelsA960/A960M Specification for Common Requirements forWrought Steel Piping FittingsE165/E165M Practice for Liquid Penetrant Examination forGeneral Industry2.2 ASME Standards:3B16.9 Factory-Made Wrought Butt-Welding FittingsB16.11 Forged Fittings,Socket-Welding and Threaded1This spec
13、ification 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
14、 approved June 1,2018.Published June 2018.Originallyapproved in 1983.Last previous edition approved in 2017 as A815/A815M 17.DOI:10.1520/A0815_A0815M-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStanda
15、rds volume information,refer to the standards Document Summary page onthe ASTM website.3Available 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 standa
16、rdCopyright 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 2.3 MSS Standards:4MSS SP-43 Standard Practice for Light Weight StainlessS