1、Designation: A 815/A 815M 09aStandard Specification forWrought Ferritic, Ferritic/Austenitic, and MartensiticStainless Steel Piping Fittings1This standard is issued under the fixed designationA 815/A 815M; the number immediately following the designation indicates the yearof original adoption or, in
2、 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 two general classes, WP andCR, of wrought ferritic, ferr
3、itic/austenitic, and martensiticstainless steel fittings of seamless and welded constructioncovered by the latest revision of Specification A 960/A 960M.Fittings differing from these standards may be furnished inaccordance with Supplementary Requirement S58 of Specifi-cation A 960/A 960M.1.1.1 Class
4、 WP fittings are subdivided into four subclasses:Classes WP-S, WP-W, WP-WX, and WP-WU. They aremanufactured to the requirements of Specification A 960/A 960M, and they shall have pressure ratings compatible with12.2. Class WP-S fittings are those manufactured from seam-less product by a seamless met
5、hod of manufacture (markedwith class 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 (
6、marked withclass symbol WP-WX); and Class 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 12
7、.3.1.2 This specification does not apply 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 theapplicabl
8、e “M” specification designation SI units, the 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 e
9、quivalents; therefore, each systemshall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with thestandard.2. Referenced Documents2.1 ASTM Standards:2A 262 Practices for Detecting Susceptibility to Intergranu-lar Attack in Austenitic Stainless Ste
10、elsA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 388/A 388M Practice for Ultrasonic Examination ofSteel ForgingsA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 763 Practices for Detecting Susceptibility to Intergranu-lar Attack in
11、Ferritic Stainless SteelsA 923 Test Methods for Detecting Detrimental IntermetallicPhase in Duplex Austenitic/Ferritic Stainless SteelsA 960/A 960M Specification for Common Requirementsfor Wrought Steel Piping FittingsE 165 Practice for Liquid Penetrant Examination for Gen-eral Industry2.2 ASME Stan
12、dards:3B16.9 Factory-Made Wrought Butt-Welding FittingsB16.11 Forged Fittings, Socket-Welding and Threaded2.3 MSS Standards:4MSS SP-43 Standard Practice for Light Weight StainlessSteel Butt-Welding FittingsMSS SP-79 Socket-Welding Reducer InsertsMSS SP-83 Steel Pipe Unions, Socket-Welding andThreade
13、dMSS SP-95 Swage(d) Nipples and Bull Plugs2.4 ASME Boiler and Pressure Vessel Codes:31This 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 Pipin
14、g Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved Aug. 1, 2009. Published September 2009. Originallyapproved in 1983. Last previous edition approved in 2009 as A 815/A 815M 09.2For referenced ASTM standards, visit the ASTM website, www.astm.org,
15、 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 American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 100
16、16-5990, http:/www.asme.org.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, P
17、O Box C700, West Conshohocken, PA 19428-2959, United States.Section VIII Division I, Pressure VesselsSection IX, Welding and Brazing Qualifications2.5 ASNT Standard:5SNT-TC-1A Recommended Practice for NondestructiveTesting Personnel Qualification and Certification3. Common Requirements and Ordering
18、Information3.1 Material furnished to this specification shall conform tothe requirements of SpecificationA 960/A 960M including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the common requirements ofSpecification A 960/A 960M constitutes nonconformanc
19、e withthis specification. In case of conflict between this specificationand Specification A 960/A 960M, this specification shall pre-vail.3.2 Specification A 960/A 960M identifies the ordering in-formation that should be complied with when purchasingmaterial to this specification.4. Materials4.1 The
20、 material for fittings shall consist of forgings, bars,plates, or seamless or welded tubular products that conform tothe chemical requirements in Table 1.5Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.
21、TABLE 1 Chemical RequirementsNOTE 1Where an ellipsis (. . .) appears in this table, there is no requirement.Composition, %GradeAGradeWPGradeCRUNSC,maxMnBP,maxS,maxSi,maxNiBCr Mo CuBNBTi OtherFerritic SteelsWP27 CR27 S44627 0.010 0.75 0.020 0.020 0.40 0.50 25.027.50.751.500.20 0.015 . . . Cb0.050.20W
22、P33 CR33 S44626 0.06 0.75 0.040 0.020 0.75 0.50 25.027.00.751.500.20 0.040 0.201.00(73(C+N) min.WP429 CR429 S42900 0.12 1.0 0.040 0.030 0.75 0.50 14.016.0. . . . .WP430 CR430 S43000 0.12 1.00 0.040 0.030 1.00 0.50 16.018.0. . . . .WP430TI CR430Ti S43036 0.10 1.00 0.040 0.030 1.00 0.75 16.019.5. . .
23、(53C) min 0.75max.WP446 CR446 S44600 0.20 1.50 0.040 0.030 0.75 0.50 23.027.0. . 0.25 . .Ferritic/Austenitic SteelsWPS31803 CRS31803 S31803 0.030 2.00 0.030 0.020 1.0 4.56.521.023.02.53.5. . . 0.080.20. .WPS32101 CRS32101 S32101 0.040 4.06.00.040 0.030 1.00 1.351.7021.022.00.100.800.100.800.200.25.
24、.WPS32202 CRS32202 S32202 0.030 2.00 0.040 0.010 1.00 1.002.8021.524.00.45 . . . 0.180.26. .WPS32750 CRS32750 S32750 0.030 1.20 0.035 0.020 0.8 6.08.024.026.03.05.00.5 0.240.32. .WPS32950 CRS32950 S32950 0.030 2.00 0.035 0.010 0.60 3.55.226.029.01.002.50. . . 0.150.35. .WPS32760 CRS32760 S32760 0.03
25、0 1.00 0.030 0.010 1.00 6.08.024.026.0C3.04.0C0.501.000.200.30C. W0.501.00WPS39274 CRS39724 S32974 0.030 1.00 0.030 0.020 0.80 6.08.024.026.02.503.50C0.200.800.240.32. W1.502.50WPS32550 CRS32550 S32550 0.04 1.50 0.040 0.030 1.00 4.56.524.027.02.93.91.502.500.100.25. .WPS32205 CRS32205 S32205 0.030 2
26、.00 0.030 0.020 1.00 4.56.522.023.03.03.5. . . 0.140.20. .Martensitic SteelsWP410 CR410 S41000 0.15 1.00 0.040 0.030 1.00 0.50max11.513.5. . . . .WPS41008 CRS41008 S41008 0.08 1.00 0.040 0.030 1.00 0.60 11.513.5. . . . .WPS41500 CRS41500 S41500 0.05 0.501.000.030 0.030 0.60 3.55.511.514.00.501.00. .
27、 . W0.501.00ANaming system developed and applied by ASTM International.BMaximum unless otherwise indicated.C%Cr+3.33 %Mo+163 %N=40min.A 815/A 815M 09a24.2 The steel shall be melted by one of the followingprocesses:4.2.1 Electric furnace (with separate degassing and refiningoptional),4.2.2 Vacuum fur
28、nace, or4.2.3 Electric furnace followed by vacuum or electroslag-consumable remelting.4.3 If secondary melting is employed, the heat shall bedefined as all ingots remelted from a primary heat.5. Manufacture5.1 FormingForging or shaping operations may be per-formed by hammering, pressing, piercing, e
29、xtruding, upsetting,rolling, bending, fusion welding, machining or by combinationof two or more of these operations. The forming procedureshall be so applied that it will not produce surface discontinui-ties deeper than 5 % of the specified nominal thickness of thefitting.5.2 All classes of fittings
30、 shall be heat treated in accordancewith Section 6.5.3 Fittings ordered as Class WP-S shall be of seamlessconstruction and shall meet all requirements of SpecificationA 960/A 960M.5.4 Fittings ordered as Class WP-W shall meet the require-ments of Specification A 960/A 960M and (1) shall have allweld
31、s made by the fitting manufacturer and all pipe weldsmade with the addition of filler metal radiographically exam-ined throughout the entire length in accordance with ParagraphUW-51 of Section VIII, Division 1, of the ASME Boiler andPressure Vessel Code; and (2) shall not require radiography ofthe s
32、tarting pipe weld if the pipe was welded without theaddition of filler metal. In place of radiographic examination,welds made by the fitting manufacturer may be ultrasonicallyexamined in accordance with the code requirements stated in5.6.5.5 Fittings ordered as Class WP-WX shall meet the re-quiremen
33、ts of Specification A 960/A 960M and shall have allwelds, whether made by the fitting manufacturer or the startingmaterial manufacturer, radiographically examined throughouttheir entire length in accordance with Paragraph UW-51 ofSection VIII, Division I of the ASME Boiler and PressureVessel Code. T
34、he radiography of welds for this class of fittingscan be done either prior to or after forming at the option of themanufacturer.5.6 Fittings ordered as Class WP-WU shall meet the re-quirements of Specification A 960/A 960M and shall have allwelds, whether made by the fitting manufacturer or the star
35、tingmaterial manufacturer, ultrasonically examined throughouttheir entire length in accordance with Appendix 12 of SectionVIII, Division 1 of ASME Boiler and Pressure Vessel Code.5.7 The radiography or ultrasonic examination for this classof fittings may be done at the option of the manufacturer, ei
36、therprior to or after forming.5.8 Personnel performing NDE examinations shall be quali-fied in accordance with SNT-TC-1A.5.9 Fittings covered in Specification A 960/A 960M andordered as CR shall meet the requirements of SpecificationA 960/A 960M and do not require nondestructive examination.5.10 All
37、 classes of fittings shall have the welders, weldingoperators, and welding procedures qualified under the provi-sions of Section IX of the ASME Boiler and Pressure VesselCode except that starting pipe welds made without the additionof filler metal do not require such qualification.5.11 All joints we
38、lded with filler metal shall be finished inaccordance with the requirements of Paragraph UW-35 (a) ofSection VIII, Division 1, of the ASME Boiler and PressureVessel Code.5.12 Fittings machined from bar shall be restricted to NPS 4or smaller.5.12.1 All caps machined from bar shall be examined byliqui
39、d penetrant in accordance with Practice E 165.5.13 Weld buildup is permitted to dimensionally correctunfilled areas produced during cold forming of stub ends.Radiographic examination of the weld buildup shall not berequired provided that all of the following steps are adhered to:5.13.1 The weld proc
40、edure and welders or welding opera-tors meet the requirements of 5.10,5.13.2 Heat-treatment is performed after welding and priorto machining,5.13.3 All weld surfaces are liquid penetrant examined inaccordance with Appendix 8 of Section VIII, Division 1 of theASME Boiler and Pressure Vessel Code, and
41、5.13.4 Repair of areas in the weld is permitted, but 5.13.1,5.13.2, and 5.13.3 must be repeated.5.14 Stub ends may be produced with the entire lap added asweld metal to a straight pipe section provided the weldingsatisfies the requirements of 5.10 for qualifications and Section6 for post weld heat t
42、reatment.5.14.1 Class WP-WRadiographic inspection of the weldis required (see 5.4).5.14.2 Class WP-WXRadiographic inspection of all weldsis required (see 5.5).5.14.3 Class WP-WUUltrasonic inspection of all welds isrequired (see 5.6).5.14.4 Class CRNondestructive examination is not re-quired (see 5.9
43、).5.15 Stub ends may be produced with the entire lap addedby the welding of a ring, made from plate or bar of the samealloy grade and composition, to the outside of a straight sectionof pipe, provided the weld is double welded, is a fullpenetration joint, satisfies the requirements of 5.10 for quali
44、-fications and Section 6 for post weld heat treatment.5.15.1 Class WP-WRadiographic inspection of all welds,made with the addition of filler metal is required (see 5.4).5.15.2 Class WP-WXRadiographic inspection of allwelds, made with or without the addition of filler metal, isrequired (see 5.5).5.15
45、.3 Class WP-WUUltrasonic inspection of all welds,made with or without the addition of filler metal, is required(see 5.6).5.15.4 Class CRNondestructive examination is not re-quired (see 5.9).6. Heat Treatment6.1 Unless otherwise stated herein, heat treatment shall beperformed after welding and in acc
46、ordance with the require-ments of Table 2.A 815/A 815M 09a36.1.1 No final heat treatment of welded fittings (HT-O)fabricated from ferritic/austenitic plate that has been heattreated as required by Table 2 for the particular grade, isrequired, provided material representative of the fittings, in-clud
47、ing base metal, weld metal, and heat affected zone, passesa Test Methods A 923 Method B or C (See Note 1) corrosionevaluation per heat. Each fitting supplied under this require-ment shall be stenciled with the suffix HT-O.6.1.2 For materials not listed in Table 3 of Test MethodsA 923, the HT-O provi
48、sion does not apply.NOTE 1The Test Methods A 923 test method (B or C) is at themanufacturers option, unless otherwise specified by the purchaser.6.2 All fittings machined directly from forgings or bars (see5.12), previously heat treated in accordance with the require-ments specified in Table 2, need
49、 not be reheat treated.7. Chemical Composition7.1 The chemical composition of each cast or heat shall bedetermined and shall conform to the requirements of thechemical composition for the respective grades of materialslisted in Table 1. Methods and practices relating to chemicalanalyses required by this specification shall be in accordancewith Methods, Practices, and DefinitionsA 751. Product analy-sis tolerances in accordance with Specification A 960/A 960Mare applicable.7.2 Except as listed below,
