1、Designation: A815/A815M 10aA815/A815M 13Standard 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 adopt
2、ion 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 two general classes, WP and CR, of wrought fer
3、ritic, ferritic/austenitic, and martensitic stainlesssteel fittings of seamless and welded construction covered by the latest revision of Specification A960/A960M. Fittings differingfrom these standards may be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.1.1
4、.1 Class WP fittings 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 with 12.2. ClassWP-S fittings are those manufactured from seamless product by a seamle
5、ss method of manufacture (marked with class symbolWP-S); Class WP-W fittings are those which contain welds where the fitting fabrication or construction welds have beenradiographed (marked with class symbol WP-W); and Class WP-WX fittings are those which contain welds where all welds havebeen radiog
6、raphed (marked with class symbol WP-WX); and Class WP-WU fittings are those which contain welds where all weldshave been ultrasonically tested (marked with class symbol WP-WU).1.1.2 Class CR fittings are those manufactured to the requirements of MSS SP-43, and they shall have pressure ratingscompati
7、ble with 12.3.1.2 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 the order.1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifie
8、s the applicable“M” specification designation SI units, the material shall be furnished to inch-pound units.1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI unitsare shown in brackets. The values stated in each system may
9、 not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to Intergranular Attack in Austeniti
10、c Stainless SteelsA388/A388M Practice for Ultrasonic Examination of Steel ForgingsA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsA763 Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless SteelsA923 Test Methods for Detecting Detri
11、mental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless SteelsA960/A960M Specification for Common Requirements for Wrought Steel Piping FittingsE165 Practice for Liquid Penetrant Examination for General Industry2.2 ASME Standards:3B16.9 Factory-Made Wrought Butt-Welding FittingsB16.11 For
12、ged Fittings, Socket-Welding and Threaded1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.22on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Pip
13、ing and Special Purpose Applications.Current edition approved Nov. 1, 2010Oct. 1, 2013. Published December 2010October 2013. Originally approved in 1983. Last previous edition approved in 2010 asA815/A815M10.10a. DOI: 10.1520/A0815_A0815M-10a.10.1520/A0815_A0815M-13.2 For referencedASTM standards, v
14、isit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from American Society of Mechanical Engineers (ASME), ASME International Headquart
15、ers, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict al
16、l changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 1
17、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 MSS Standards:4MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding FittingsMSS SP-79 Socket-Welding Reducer InsertsMSS SP-83 Steel Pipe Unions, Socket-Welding and ThreadedMSS SP-95 Swage(d) N
18、ipples and Bull PlugsMSS SP-97 Integrally Reinforced Forged Branch Outlet FittingsSocket Welding, Threaded and Buttwelding Ends2.4 ASME Boiler and Pressure Vessel Codes:3Section VIII Division I, Pressure VesselsSection IX, Welding and Brazing Qualifications2.5 ASNT Standard:5SNT-TC-1A Recommended Pr
19、actice for Nondestructive Testing Personnel Qualification and Certification3. Common Requirements and Ordering Information3.1 Material furnished to this specification shall conform to the requirements of Specification A960/A960M including anysupplementary requirements that are indicated in the purch
20、ase order. Failure to comply with the common requirements ofSpecification A960/A960M constitutes nonconformance with this specification. In case of conflict between this specification andSpecification A960/A960M, this specification shall prevail.3.2 Specification A960/A960M identifies the ordering i
21、nformation that should be complied with when purchasing material tothis specification.4. Materials4.1 The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products that conform to thechemical requirements in Table 1.4.2 The steel shall be melted by one of
22、the following processes:4.2.1 Electric furnace (with separate degassing and refining optional),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 be defined as all ingots remelted from a primary h
23、eat.5. Manufacture5.1 FormingForging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling,bending, fusion welding, machining or by combination of two or more of these operations. The forming procedure shall be soapplied that it will not produce surfa
24、ce discontinuities deeper than 5 % of the specified nominal thickness of the fitting.5.2 All classes of fittings shall be heat treated in accordance with Section 6.5.3 Fittings ordered as Class WP-S shall be of seamless construction and shall meet all requirements of SpecificationA960/A960M.5.4 Fitt
25、ings ordered as Class WP-W shall meet the requirements of Specification A960/A960M and (1) shall have all weldsmade by the fitting manufacturer and all pipe welds made with the addition of filler metal radiographically examined throughoutthe entire length in accordance with Paragraph UW-51 of Sectio
26、n VIII, Division 1, of theASME Boiler and Pressure Vessel Code;and (2) shall not require radiography of the starting pipe weld if the pipe was welded without the addition of filler metal. In placeof radiographic examination, welds made by the fitting manufacturer may be ultrasonically examined in ac
27、cordance with the coderequirements stated in 5.6.5.5 Fittings ordered as Class WP-WX shall meet the requirements of Specification A960/A960M and shall have all welds,whether made by the fitting manufacturer or the starting material manufacturer, radiographically examined throughout their entirelengt
28、h in accordance with Paragraph UW-51 of Section VIII, Division I of the ASME Boiler and Pressure Vessel Code. Theradiography of welds for this class of fittings can be done either prior to or after forming at the option of the manufacturer.5.6 Fittings ordered as Class WP-WU shall meet the requireme
29、nts of Specification A960/A960M and shall have all welds,whether made by the fitting manufacturer or the starting material manufacturer, ultrasonically examined throughout their entirelength in accordance with Appendix 12 of Section VIII, Division 1 of ASME Boiler and Pressure Vessel Code.5.7 The ra
30、diography or ultrasonic examination for this class of fittings may be done at the option of the manufacturer, eitherprior to or after forming.4 Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.5 Ava
31、ilable from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.A815/A815M 1325.8 Personnel performing NDE examinations shall be qualified in accordance with SNT-TC-1A.5.9 Fittings covered in Specification A960/A960M and
32、 ordered as CR shall meet the requirements of SpecificationA960/A960M and do not require nondestructive examination.5.10 All classes of fittings shall have the welders, welding operators, and welding procedures qualified under the provisions ofSection IX of the ASME Boiler and Pressure Vessel Code e
33、xcept that starting pipe welds made without the addition of filler metaldo not require such qualification.5.11 All joints welded with filler metal shall be finished in accordance with the requirements of Paragraph UW-35 (a) of SectionVIII, Division 1, of the ASME Boiler and Pressure Vessel Code.5.12
34、 Fittings machined from bar shall be restricted to NPS 4 or smaller.5.12.1 All caps machined from bar shall be examined by liquid penetrant in accordance with Practice E165.5.13 Weld buildup is permitted to dimensionally correct unfilled areas produced during cold forming of stub ends. Radiographice
35、xamination of the weld buildup shall not be required provided that all of the following steps are adhered to:5.13.1 The weld procedure and welders or welding operators meet the requirements of 5.10,TABLE 1 Chemical RequirementsNOTE 1Where an ellipsis (. . .) appears in this table, there is no requir
36、ement.Composition, %GradeAGradeWPGradeCR UNSC,max MnB P,maxS,maxSi,max NiB Cr Mo CuB NB Ti OtherFerritic SteelsWP27 CR27 S44627 0.010 0.75 0.020 0.020 0.40 0.50 25.027.50.751.500.20 0.015 . . . Cb0.050.20WP33 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(7(C+N) min.
37、 . .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. . . . . . . . . (5C) min 0.75max. . .WP446 CR446 S44600
38、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. . . . . .WPS3
39、2202 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 C
40、RS32760 S32760 0.030 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. . . .
41、. .WPS32205 CRS32205 S32205 0.030 2.00 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. . . . . . . . . . . . .
42、. .WPS41500 CRS41500 S41500 0.05 0.501.000.030 0.030 0.60 3.55.511.514.00.501.00. . . . . . . . . W0.501.00A Naming system developed and applied by ASTM International.B Maximum unless otherwise indicated.C % Cr + 3.3 % Mo + 16 % N = 40 min.A815/A815M 1335.13.2 Heat-treatment is performed after weldi
43、ng and prior to machining,5.13.3 All weld surfaces are liquid penetrant examined in accordance withAppendix 8 of Section VIII, Division 1 of theASMEBoiler and Pressure 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
44、be produced with the entire lap added as weld metal to a straight pipe section provided the welding satisfiesthe requirements of 5.10 for qualifications and Section 6 for post weld heat treatment.5.14.1 Class WP-WRadiographic inspection of the weld is required (see 5.4).5.14.2 Class WP-WXRadiographi
45、c inspection of all welds is required (see 5.5).5.14.3 Class WP-WUUltrasonic inspection of all welds is required (see 5.6).5.14.4 Class CRNondestructive examination is not required (see 5.9).5.15 Stub ends may be produced with the entire lap added by the welding of a ring, made from plate or bar of
46、the same alloygrade and composition, to the outside of a straight section of pipe, provided the weld is double welded, is a full penetration joint,satisfies the requirements of 5.10 for qualifications and Section 6 for post weld heat treatment.5.15.1 Class WP-WRadiographic inspection of all welds, m
47、ade with the addition of filler metal is required (see 5.4).5.15.2 Class WP-WXRadiographic inspection of all welds, made with or without the addition of filler metal, is required (see5.5).5.15.3 Class WP-WUUltrasonic inspection of all welds, made with or without the addition of filler metal, is requ
48、ired (see 5.6).5.15.4 Class CRNondestructive examination is not required (see 5.9).6. Heat Treatment6.1 Unless otherwise stated herein, heat treatment shall be performed after welding and in accordance with the requirements ofTable 2.6.1.1 No final heat treatment of welded fittings (HT-O) fabricated
49、 from ferritic/austenitic plate that has been heat treated asrequired by Table 2 for the particular grade, is required, provided material representative of the fittings, including base metal, weldmetal, and heat affected zone, passes a Test Methods A923 Method B or C (See Note 1) corrosion evaluation per heat. Each fittingsupplied under this requirement shall be stenciled with the suffix HT-O.6.1.2 For materials not listed in Table 3 of Test Methods A923, the HT-O provision does not apply.NOT
