1、Designation: A815/A815M 10aStandard 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 th
2、e 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, ferriti
3、c/austenitic, and 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 fit
4、tings are subdivided 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 with12.2. Class WP-S fittings are those manufactured from seam-less product by a seamless method of ma
5、nufacture (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 (marked wi
6、thclass 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 12.3.1.2 Th
7、is 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 theapplicable “M” spe
8、cification 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 equivalent
9、s; 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:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA388/A388
10、M Practice for Ultrasonic 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
11、 Duplex Austenitic/Ferritic Stainless SteelsA960/A960M Specification for Common Requirements forWrought Steel Piping FittingsE165 Practice for Liquid Penetrant Examination for GeneralIndustry2.2 ASME Standards:3B16.9 Factory-Made Wrought Butt-Welding FittingsB16.11 Forged Fittings, Socket-Welding an
12、d 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 andThreadedMSS SP-95 Swage(d) Nipples and Bull PlugsMSS SP-97 Integrally Reinforced Forged Branch OutletFi
13、ttingsSocket Welding, Threaded and ButtweldingEnds1This 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
14、 for Piping and Special Purpose Applications.Current edition approved Nov. 1, 2010. Published December 2010. Originallyapproved in 1983. Last previous edition approved in 2010 as A815/A815M10.DOI: 10.1520/A0815_A0815M-10a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontac
15、t 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 10016-5990,
16、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, PO Box C70
17、0, West Conshohocken, PA 19428-2959, United States.2.4 ASME Boiler and Pressure Vessel Codes:3Section VIII Division I, Pressure VesselsSection IX, Welding and Brazing Qualifications2.5 ASNT Standard:5SNT-TC-1A Recommended Practice for NondestructiveTesting Personnel Qualification and Certification3.
18、 Common Requirements and Ordering Information3.1 Material furnished to this specification shall conform tothe requirements of Specification A960/A960M including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the common requirements ofSpecification A960/
19、A960M constitutes nonconformance withthis specification. In case of conflict between this specificationand Specification A960/A960M, this specification shall pre-vail.3.2 SpecificationA960/A960M identifies the ordering infor-mation that should be complied with when purchasing materialto this specifi
20、cation.4. Materials4.1 The material for fittings shall consist of forgings, bars,plates, or seamless or welded tubular products that conform tothe chemical requirements in Table 1.4.2 The steel shall be melted by one of the followingprocesses:4.2.1 Electric furnace (with separate degassing and refin
21、ingoptional),4.2.2 Vacuum furnace, 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 ham
22、mering, pressing, piercing, extruding, 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 thefittin
23、g.5.2 All classes of fittings 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 SpecificationA960/A960M.5.4 Fittings ordered as Class WP-W shall meet the require-ments of Specification A960/A960M a
24、nd (1) shall have allwelds 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 re
25、quire radiography ofthe starting 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 s
26、hall meet the re-quirements of Specification A960/A960M 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
27、 PressureVessel Code. The 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 A960/A960M and shall have allwelds, whether made by the fitting man
28、ufacturer or the startingmaterial 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
29、 the manufacturer, eitherprior 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 A960/A960M andordered as CR shall meet the requirements of SpecificationA960/A960M and do not require nondestructive exa
30、mination.5.10 All 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
31、.11 All joints welded 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
32、 examined byliquid penetrant in accordance with Practice E165.5.13 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
33、.1 The weld procedure 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
34、Vessel Code, and5.13.4 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
35、post weld heat treatment.5Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.A815/A815M 10a25.14.1 Class WP-WRadiographic inspection of the weldis required (see 5.4).5.14.2 Class WP-WXRadiographic inspectio
36、n 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).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
37、 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-fications and Section 6 for post weld heat treatment.5.15.1 Class WP-WRadiographic inspection of all welds,made with the a
38、ddition 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).5.15.3 Class WP-WUUltrasonic inspection of all welds,made with or without the addition of filler metal, is required(see 5.6).TA
39、BLE 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 . . . Cb0.050.20WP3
40、3 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. . . (5
41、3C) 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. .W
42、PS32202 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 0.030
43、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 2.0
44、0 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. . .
45、 W0.501.00ANaming system developed and applied by ASTM International.BMaximum unless otherwise indicated.C%Cr+3.33 %Mo+163 %N=40min.A815/A815M 10a35.15.4 Class CRNondestructive examination is not re-quired (see 5.9).6. Heat Treatment6.1 Unless otherwise stated herein, heat treatment shall beperforme
46、d after welding and in accordance with the require-ments of Table 2.6.1.1 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
47、, in-cluding base metal, weld metal, and heat affected zone, passesa Test Methods A923 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 MethodsA923, the HT-
48、O provision does not apply.NOTE 1The Test Methods A923 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
49、, need 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 Definitions A751. Product analy-sis tolerances in accordance with Specification A960/A960Mare applicable.7.2 Except as listed be
