1、Designation:A815/A815M13A815/A815M13a Standard Specication for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings 1 This standard is issued under the xed designationA815/A815M; the number immediately following the designation indicates the year of original adoptio
2、n or, in the case of revision, the year of last revision.Anumber 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 specication covers two general classes, WP and CR, of wrought ferrit
3、ic, ferritic/austenitic, and martensitic stainless steel ttings of seamless and welded construction covered by the latest revision of Specication A960/A960M. Fittings differing from these standards may be furnished in accordance with Supplementary Requirement S58 of Specication A960/A960M. 1.1.1 Cla
4、ss WP ttings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. They are manufactured to the requirements of Specication A960/A960M, and they shall have pressure ratings compatible with 12.2. Class WP-S ttings are those manufactured from seamless product by a seamless method
5、of manufacture (marked with class symbol WP-S); Class WP-W ttings are those which contain welds where the tting fabrication or construction welds have been radiographed (marked with class symbolWP-W); and ClassWP-WX ttings are those which contain welds where all welds have beenradiographed(markedwit
6、hclasssymbolWP-WX);andClassWP-WUttingsarethosewhichcontainweldswhereallwelds have been ultrasonically tested (marked with class symbol WP-WU). 1.1.2 Class CR ttings are those manufactured to the requirements of MSS SP-43, and they shall have pressure ratings compatible with 12.3. 1.2 This specicatio
7、n does not apply to cast ttings. 1.3 Optional supplementary requirements are provided. When desired, one or more of these may be specied in the order. 1.4 This specication is expressed in both inch-pound units and in SI units. However, unless the order species the applicable M specication designatio
8、n SI units, the material shall be furnished to inch-pound units. 1.5 ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
9、independently of the other. Combining values from the two systems may result in non-conformance with the standard. 2. Referenced Documents 2.1 ASTM Standards: 2 A262Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels A388/A388MPractice for Ultrasonic Examina
10、tion of Steel Forgings A751Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products A763Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels A923Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Sta
11、inless Steels A960/A960MSpecication for Common Requirements for Wrought Steel Piping Fittings E165Practice for Liquid Penetrant Examination for General Industry 2.2 ASME Standards: 3 B16.9Factory-Made Wrought Butt-Welding Fittings B16.11 Forged Fittings, Socket-Welding and Threaded 1 Thisspecication
12、isunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications. Current edition approved Oct. 1, 2013Nov. 1
13、, 2013. Published October 2013November 2013. Originally approved in 1983. Last previous edition approved in 20102013 as A815/A815M10a.13. DOI: 10.1520/A0815_A0815M-13.10.1520/A0815_A0815M-13A. 2 ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatserviceastm.org
14、.ForAnnualBookofASTMStandards volume information, refer to the standards Document Summary page on the ASTM website. 3 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/ www.asme.org. This document is not a
15、nASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. I
16、n all cases only the current version of the standard as published by ASTM is to be considered the official document. *ASummary of Changes section appears at the end of this standard Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States 12.3
17、MSS Standards: 4 MSS SP-43Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings MSS SP-79Socket-Welding Reducer Inserts MSS SP-83Steel Pipe Unions, Socket-Welding and Threaded MSS SP-95Swage(d) Nipples and Bull Plugs MSS SP-97Integrally Reinforced Forged Branch Outlet FittingsSock
18、et Welding, Threaded and Buttwelding Ends 2.4 ASME Boiler and Pressure Vessel Codes: 3 Section VIII Division I, Pressure VesselsI Section IX, Welding and Brazing QualicationsIX 2.5 ASNT Standard: 5 SNT-TC-1ARecommended Practice for Nondestructive Testing Personnel Qualication and Certication 3. Comm
19、on Requirements and Ordering Information 3.1 Material furnished to this specication shall conform to the requirements of Specication A960/A960M including any supplementary requirements that are indicated in the purchase order. Failure to comply with the common requirements of Specication A960/A960M
20、constitutes nonconformance with this specication. In case of conict between this specication and Specication A960/A960M, this specication shall prevail. 3.2 Specication A960/A960M identies the ordering information that should be complied with when purchasing material to this specication. 4. Material
21、s 4.1 The material for ttings shall consist of forgings, bars, plates, or seamless or welded tubular products that conform to the chemical requirements in Table 1. 4.2 The steel shall be melted by one of the following processes: 4.2.1 Electric furnace (with separate degassing and rening optional), 4
22、.2.2 Vacuum furnace, or 4.2.3 Electric furnace followed by vacuum or electroslag-consumable remelting. 4.3 If secondary melting is employed, the heat shall be dened as all ingots remelted from a primary heat. 5. Manufacture 5.1 FormingForgingorshapingoperationsmaybeperformedbyhammering,pressing,pier
23、cing,extruding,upsetting,rolling, bending, fusion welding, machining or by combination of two or more of these operations. The forming procedure shall be so applied that it will not produce surface discontinuities deeper than 5% of the specied nominal thickness of the tting. 5.2 All classes of tting
24、s 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 Specication A960/A960M. 5.4 Fittings ordered as Class WP-W shall meet the requirements of Specication A960/A960M and (1) shall have all welds
25、made by the tting manufacturer and all pipe welds made with the addition of ller metal radiographically examined throughout theentirelengthinaccordancewithParagraphUW-51ofSectionVIII,Division1,oftheASMEBoilerandPressureVesselCode; and (2) shall not require radiography of the starting pipe weld if th
26、e pipe was welded without the addition of ller metal. In place of radiographic examination, welds made by the tting manufacturer may be ultrasonically examined in accordance with the code requirements stated in 5.6. 5.5 Fittings ordered as Class WP-WX shall meet the requirements of Specication A960/
27、A960M and shall have all welds, whether made by the tting manufacturer or the starting material manufacturer, radiographically examined throughout their entire length in accordance with Paragraph UW-51 of Section VIII, Division I of the ASME Boiler and Pressure Vessel Code. The radiography of welds
28、for this class of ttings 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 requirements of Specication A960/A960M and shall have all welds, whether made by the tting manufacturer or the starting material manufacturer, u
29、ltrasonically examined throughout their entire length in accordance with Appendix 12 of Section VIII, Division 1 of ASME Boiler and Pressure Vessel Code. 5.7 The radiography or ultrasonic examination for this class of ttings may be done at the option of the manufacturer, either prior to or after for
30、ming. 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 Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.
31、asnt.org. A815/A815M13a 25.8 Personnel performing NDE examinations shall be qualied in accordance with SNT-TC-1A. 5.9 Fittings covered in Specication A960/A960M and ordered as CR shall meet the requirements of Specication A960/A960M and do not require nondestructive examination. 5.10 All classes of
32、ttings shall have the welders, welding operators, and welding procedures qualied under the provisions of Section IX of theASME Boiler and PressureVessel Code except that starting pipe welds made without the addition of ller metal do not require such qualication. 5.11 Alljointsweldedwithllermetalshal
33、lbenishedinaccordancewiththerequirementsofParagraphUW-35(a)ofSection VIII, Division 1, of the ASME Boiler and Pressure Vessel Code. 5.12 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 Prac
34、tice E165. 5.13 Weldbuildupispermittedtodimensionallycorrectunlledareasproducedduringcoldformingofstubends.Radiographic examination 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 r
35、equirements of 5.10, TABLE 1 Chemical Requirements NOTE 1Where an ellipsis (.) appears in this table, there is no requirement. Composition, % Grade A Grade WP Grade CR UNS C, max Mn B P, max S, max Si, max Ni B Cr Mo Cu B N B Ti Other Ferritic Steels WP27 CR27 S44627 0.010 0.75 0.020 0.020 0.40 0.50
36、 25.0 27.5 0.75 1.50 0.20 0.015 . . . Cb 0.050.20 WP33 CR33 S44626 0.06 0.75 0.040 0.020 0.75 0.50 25.0 27.0 0.75 1.50 0.20 0.040 0.201.00 (7(C+N) min . . . WP429 CR429 S42900 0.12 1.0 0.040 0.030 0.75 0.50 14.0 16.0 . . . . . . . . . . . . . . . WP430 CR430 S43000 0.12 1.00 0.040 0.030 1.00 0.50 16
37、.0 18.0 . . . . . . . . . . . . . . . WP430TI CR430Ti S43036 0.10 1.00 0.040 0.030 1.00 0.75 16.0 19.5 . . . . . . . . . (5C) min 0.75 max . . . WP446 CR446 S44600 0.20 1.50 0.040 0.030 0.75 0.50 23.0 27.0 . . . . . . 0.25 . . . . . . Ferritic/Austenitic Steels WPS31803 CRS31803 S31803 0.030 2.00 0.
38、030 0.020 1.0 4.5 6.5 21.0 23.0 2.5 3.5 . . . 0.08 0.20 . . . . . . WPS32101 CRS32101 S32101 0.040 4.0 6.0 0.040 0.030 1.00 1.35 1.70 21.0 22.0 0.10 0.80 0.10 0.80 0.20 0.25 . . . . . . WPS32202 CRS32202 S32202 0.030 2.00 0.040 0.010 1.00 1.00 2.80 21.5 24.0 0.45 . . . 0.18 0.26 . . . . . . WPS32750
39、 CRS32750 S32750 0.030 1.20 0.035 0.020 0.8 6.0 8.0 24.0 26.0 3.0 5.0 0.5 0.24 0.32 . . . . . . WPS32950 CRS32950 S32950 0.030 2.00 0.035 0.010 0.60 3.5 5.2 26.0 29.0 1.00 2.50 . . . 0.15 0.35 . . . . . . WPS32760 CRS32760 S32760 0.030 1.00 0.030 0.010 1.00 6.0 8.0 24.0 26.0 C 3.0 4.0 C 0.50 1.00 0.
40、20 0.30 C . . . W 0.501.00 WPS39274 CRS39724 S32974 0.030 1.00 0.030 0.020 0.80 6.0 8.0 24.0 26.0 2.50 3.50 C 0.20 0.80 0.24 0.32 . . . W 1.502.50 WPS32550 CRS32550 S32550 0.04 1.50 0.040 0.030 1.00 4.5 6.5 24.0 27.0 2.9 3.9 1.50 2.50 0.10 0.25 . . . . . . WPS32205 CRS32205 S32205 0.030 2.00 0.030 0
41、.020 1.00 4.5 6.5 22.0 23.0 3.0 3.5 . . . 0.14 0.20 . . . . . . Martensitic Steels WP410 CR410 S41000 0.15 1.00 0.040 0.030 1.00 0.50 max 11.5 13.5 . . . . . . . . . . . . . . . WPS41008 CRS41008 S41008 0.08 1.00 0.040 0.030 1.00 0.60 11.5 13.5 . . . . . . . . . . . . . . . WPS41500 CRS41500 S41500
42、0.05 0.50 1.00 0.030 0.030 0.60 3.5 5.5 11.5 14.0 0.50 1.00 . . . . . . . . . W 0.501.00 A Naming system developed and applied by ASTM International. B Maximum unless otherwise indicated. C % Cr + 3.3 % Mo + 16 % N = 40 min. A815/A815M13a 35.13.2 Heat-treatment is performed after welding and prior t
43、o machining, 5.13.3 AllweldsurfacesareliquidpenetrantexaminedinaccordancewithAppendix8ofSectionVIII,Division1oftheASME Boiler and Pressure Vessel Code, and 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 Stubendsmaybeproducedwiththeentirelapadde
44、dasweldmetaltoastraightpipesectionprovidedtheweldingsatises the requirements of 5.10 for qualications 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-WXRadiographic inspection of all welds is required (see 5.5).
45、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 the same alloy grade and composition, to the o
46、utside of a straight section of pipe, provided the weld is double welded, is a full penetration joint, satises the requirements of 5.10 for qualications and Section 6 for post weld heat treatment. 5.15.1 Class WP-WRadiographic inspection of all welds, made with the addition of ller metal is required
47、 (see 5.4). 5.15.2 Class WP-WXRadiographic inspection of all welds, made with or without the addition of ller metal, is required (see 5.5). 5.15.3 ClassWP-WUUltrasonicinspectionofallwelds,madewithorwithouttheadditionofllermetal,isrequired(see5.6). 5.15.4 Class CRNondestructive examination is not req
48、uired (see 5.9). 6. Heat Treatment 6.1 Unless otherwise stated herein, heat treatment shall be performed after welding and in accordance with the requirements of Table 2. 6.1.1 No nal heat treatment of welded ttings (HT-O) fabricated from ferritic/austenitic plate that has been heat treated as requi
49、redbyTable2fortheparticulargrade,isrequired,providedmaterialrepresentativeofthettings,includingbasemetal,weld TABLE 2 Heat Treatment Stainless Steel All WP and CR Grades Temperature Cooling Tempering Temperature Ferritic All $ 1200 F 650 C As appropriate for grade Not specied Ferritic/Austenitic S31803 18702010 F 10201100 C Water quench or rapidly cooled by other means Not required S32101 1870 F 1020 C min W
