1、Designation: A403/A403M 12A403/A403M 13Standard Specification forWrought Austenitic Stainless Steel Piping Fittings1This standard is issued under the fixed designation A403/A403M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers w
3、rought stainless steel fittings for pressure piping applications.21.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WPor CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.1.3 For each o
4、f the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or weldedconstruction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent ofnondestructive examination (NDE). Table 1 is a general summary of the fitt
5、ing classes applicable to all WPgrades of stainless steelcovered by this specification. There are no classes for the CR grades. Specific requirements are covered elsewhere.1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
6、“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 not be exact
7、equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the standard.1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in SpecificationsA351/A351M
8、, A743/A743M, and A744/A744M.2. Referenced Documents2.1 ASTM Standards:3A351/A351M Specification for Castings, Austenitic, for Pressure-Containing PartsA743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for GeneralApplicationA744/A744M Specification for
9、Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe ServiceA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsA960/A960M Specification for Common Requirements for Wrought Steel Piping FittingsE112 Test Methods for Determining Average Grain SizeE165 Pract
10、ice for Liquid Penetrant Examination for General Industry2.2 ASME Standards: 4ASME B16.9 Factory-Made Wrought Steel Butt-Welding FittingsASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded2.3 MSS Standards: 5MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsMSS SP
11、-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings1 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 Applica
12、tions and Bolting Materials for Piping and Special Purpose Applications.Current edition approved May 1, 2012May 1, 2013. Published June 2012 June 2013. Originally approved in 1956. Last previous edition approved in 20112012 asA403/A403M11.12. DOI: 10.1520/A0403_A0403M-12.10.1520/A0403_A0403M-13.2 Fo
13、r ASME Boiler and Pressure Vessel Code applications see related Specification SA-403 in Section II of that Code.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the s
14、tandards Document Summary page on the ASTM website.4 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.5 Available from Manufacturers Standardization Society of the Valve and Fittings Industry
15、 (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.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 all
16、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, 100
17、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1MSS SP-79 Socket-Welding Reducer InsertsMSS SP-83 Steel Pipe Unions, Socket-Welding and ThreadedMSS SP-95 Swage(d) Nipples and Bull PlugsMSS SP-97 Integrally Reinforced Forged Branch Outlet FittingsSocket Welding, Threa
18、ded and Buttwelding Ends2.4 ASME Boiler and Pressure Vessel Code: 4Section VIII Division I, Pressure VesselsSection IX, Welding Qualifications2.5 AWS Standards: 6A 5.4 Specification for Corrosion-Resisting Chromium and Chromium-Nickel Steel Covered Welding ElectrodesA 5.9 Specification for Corrosion
19、-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Bare ElectrodesA 5.11 Specification for Nickel and Nickel-Alloy Welding Electrodes for Shielded Metal Arc WeldingA5.14 Specification for Nickel and Nickel-Alloy Bare Welding Rods and Electrodes2.6 ASNT: 7SNT-TC-1A (1984) Recommended Prac
20、tice 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 purchas
21、e 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 inf
22、ormation that should be complied with when purchasing material tothis specification.4. Material4.1 The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products that conform to thechemical requirements in Table 2. See Table 3 for a list of common names.4.2
23、 The steel shall be melted by one of the following processes:4.2.1 Electric furnace (with separate degassing and refining optional),4.2.2 Vacuum furnace, or4.2.3 One of the former followed by vacuum or electroslag-consumable remelting.4.3 If secondary melting is employed, the heat shall be defined a
24、s all ingots remelted from a primary heat.4.4 Grain SizeAnnealed Alloys UNS N08810 and UNS N08811 shall conform to an average grain size of ASTM No. 5 orcoarser.5. Manufacture5.1 FormingForging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling,ben
25、ding, fusion welding, machining, or by a combination of two or more of these operations. The forming procedure shall be soapplied that it will not produce injurious defects in the fittings.5.2 All fittings shall be heat treated in accordance with Section 6.5.3 Grade WP fittings ordered as Class S sh
26、all be of seamless construction and shall meet all requirements of ASME B16.9,ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, or MSS SP-97.5.4 Grade WP fittings ordered as Class W shall meet the requirements of ASME B16.9 and:5.4.1 Shall have all pipe welds made by mill or the fitting manufacturer wit
27、h the addition of filler metal radiographicallyexamined throughout the entire length in accordance with the Code requirements stated in 5.5, and,6 Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http:/www.aws.org.7 Available from American Society for Nondestructiv
28、e Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.TABLE 1 Fitting Classes for WP GradesClass Construction Nondestructive ExaminationS Seamless NoneW Welded Radiography or UltrasonicWX Welded RadiographyWU Welded UltrasonicA403/A403M 132TABLE 2 Chemical
29、 RequirementsNOTE 1Where an ellipsis (.) appears in this table, there is no requirement.GradeA Composition, %Grade WP Grade CR UNS Des-ignationCB MnB PB SB SiB Ni Cr Mo Ti N2C OthersWPXM-19 CRXM-19 S20910 0.06 4.06.0 0.045 0.030 1.00 11.513.5 20.523.5 1.503.00 . . . 0.200.40DWP20CB CR20CB N08020 0.0
30、7 2.00 0.045 0.035 1.00 32.038.0 19.021.0 2.003.00 . . . Cu 3.0-4.0Cb 8XC min,1.00 maxWP6XN CR6XN N08367 0.030 2.00 0.040 0.030 1.00 23.525.5 20.022.0 6.07.0 . . . 0.180.25 Cu 0.75WP700 CR700 N08700 0.04 2.00 0.040 0.030 1.00 24.026.0 19.023.0 4.35.0 Cu0.50Cb 8XC minWPNIC CRNIC N08800 0.10 1.50 0.04
31、5 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . . Al 0.150.60Cu 0.75Fe 39.5 minWPNIC10 CRNIC10 N08810 0.05 0.10 1.50 0.045 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . . Al 0.150.60Cu 0.75Fe 39.5 minWPNIC11 CRNIC11 N08811 0.60 0.10 1.50 0.040 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . . Al
32、 0.150.60Cu 0.75Fe 39.5 minWP904L CR904L N08904 0.020 2.00 0.045 0.035 1.00 23.028.0 19.023.0 4.05.0 . . . 0.10 Cu 1.02.0WP1925 CR1925 N08925 0.020 1.00 0.045 0.030 0.50 24.026.0 19.021.0 6.07.0 0.100.20 Cu 0.8-1.5WP1925N CR1925N N08926 0.020 2.00 0.030 0.010 0.50 24.026.0 19.021.0 6.07.0 . . . 0.15
33、0.25 Cu 0.5-1.5WP304 CR304 S30400 0.08 2.00 0.045 0.030 1.00 8.011.0 18.020.0 . . . . . . . . . . . .WP304L CR304L S30403 0.030E 2.00 0.045 0.030 1.00 8.012.0 18.020.0 . . . . . . . . . . . .WP304H CR304H S30409 0.040.10 2.00 0.045 0.030 1.00 8.011.0 18.020.0 . . . . . . . . . . . .WP304N CR304N S30
34、451 0.08 2.00 0.045 0.030 1.00 8.011.0 18.020.0 . . . . . . 0.100.16. . .WP304LN CR304LN S30453 0.030 2.00 0.045 0.030 1.00 8.011.0 18.020.0 . . . . . . 0.100.16. . .WP309 CR309 S30900 0.20 2.00 0.045 0.030 1.00 12.015.0 22.024.0 . . . . . . . . . . . .WP310S CR310S S31008 0.08 2.00 0.045 0.030 1.00
35、 19.022.0 24.026.0 . . . . . . . . . . . .WPS31254 CRS31254 S31254 0.020 1.00 0.030 0.010 0.80 17.518.5 19.520.5 6.06.5 . . . 0.180.22Cu 0.501.00WP316 CR316 S31600 0.08 2.00 0.045 0.030 1.00 10.014.0 16.018.0 2.003.00 . . . . . . . . .WP316L CR316L S31603 0.030E 2.00 0.045 0.030 1.00 10.014.0F 16.01
36、8.0 2.003.00 . . . . . . . . .WP316H CR316H S31609 0.040.10 2.00 0.045 0.030 1.00 10.014.0 16.018.0 2.00-3.00 . . . . . . . . .WP316N CR316N S31651 0.08 2.00 0.045 0.030 1.00 10.013.0 16.018.0 2.003.00 . . . 0.10-0.16. . .WP316LN CR316LN S31653 0.030 2.00 0.045 0.030 1.00 10.013.0 16.018.0 2.003.00
37、. . . 0.100.16. . .WP317 CR317 S31700 0.08 2.00 0.045 0.030 1.00 11.015.0 18.020.0 3.04.0 . . . . . . . . .WP317L CR317L S31703 0.030 2.00 0.045 0.030 1.00 11.015.0 18.020.0 3.04.0 . . . . . . . . .WPS31725 CRS31725 S31725 0.030 2.00 0.045 0.030 1.00 13.517.5 18.020.0 4.05.0 . . . 0.20 . . .WPS31726
38、 CRS31726 S31726 0.030 2.00 0.045 0.030 1.00 13.517.5 17.020.0 4.05.0 . . . 0.100.20. . .WPS31727 CRS31727 S31727 0.030 1.00 0.030 0.030 1.00 14.516.5 17.519.0 3.84.5 . . . 0.150.21Cu 2.84.0WPS32053 CRS32053 S32053 0.030 1.00 0.030 0.010 1.00 24.026.0 22.024.0 5.06.0 . . . 0.170.22. . .WP321 CR321 S
39、32100 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . G . . . . . .WP321H CR321H S32109 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . H . . . . . .WPS33228 CRS33228 S33228 0.040.08 1.00 0.020 0.015 0.30 31.033.0 26.028.0 . . . . . . . . . Ce 0.050.10Al 0.025Cb 0.61.0WPS34565 CRS34565 S3456
40、5 0.030 5.07.0 0.030 0.010 1.00 16.018.0 23.025.0 4.05.0 . . . 0.400.60Cb 0.10WP347 CR347 S34700 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . IWP347H CR347H S34709 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . JWP347LN CR347LN S34751 0.0050.0202.00 0.045 0.030 1.
41、00 9.013.0 17.019.0 . . . . . . . . . Cb 0.200.50,K N0.060.10CWP348 CR348 S34800 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . Cb+Ta=10(C)1.10Ta 0.10Co 0.20WP348H CR348H S34809 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . Cb+Ta=8(C)1.10Ta 0.10Co 0.20WPS38815 CRS3
42、8815 S38815 0.030 2.00 0.040 0.020 5.5-6.5 13.0-17.0 13.0-15.0 0.75-1.50 . . . . . . Cu 0.75-1.50Al 0.30A See Section 14 for marking requirements.B Maximum, unless otherwise indicated.C The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.D Columb
43、ium 0.100.30 %; Vanadium, 0.100.30 %.A403/A403M 1335.4.2 Radiographic inspection is not required on single longitudinal seam welds made by the starting pipe manufacturer if madewithout the addition of filler metal; and5.4.3 Radiographic inspection is not required on longitudinal seam fusion welds ma
44、de by the fitting manufacturer when all ofthe following conditions have been met:5.4.3.1 No addition of filler metal,5.4.3.2 Only one welding pass per weld seam, and,5.4.3.3 Fusion welding from one side only.5.4.4 In place of radiographic examination, welds made by the fitting manufacturer may be ul
45、trasonically examined inaccordance with the Code requirements stated in 5.6.5.5 Grade WPfittings ordered as Class WX shall meet the requirements ofASME B16.9 and shall have all welds, whether madeby the fitting manufacturer or the starting material manufacturer, radiographically examined throughout
46、their entire length inaccordance with Paragraph UW-51 of Section VIII, Division I, of the ASME Boiler and Pressure Vessel Code.E For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040 % is necessary in grades TP304L and TP316L. Smalloutside diame
47、ter tubes are defined as those less than 0.500 in. 12.7 mm in outside diameter and light wall tubes as those less than 0.049 in. 1.24 mm in average wallthickness.F On pierced tubing, the nickel may be 11.016.0 %.G 5X(C+N 5X(C+N)2)0.70. min0.70 max.H 4X(C+N 4X(C+N)2)0.70. min0.70 max.I The columbium
48、content shall be not less than ten times the carbon content and not more than 1.10 %.J The columbium content shall be not less than eight times the carbon content and not more than 1.10 %.KThe columbium content shall be not less than 15 times the carbon content.TABLE 3 Common NamesGrade WPA Grade CR
49、A UNS Designation TypeBWPXM-19 CRXM-19 S20910 XM-19CWP20CB CR20CB N08020 . . .WP6XN CR6XN N08367 . . .WP700 CR700 N08700 . . .WPNIC CRNIC N08800 800CWPNIC10 CRNIC10 N08810 800HCWPNIC11 CRNIC11 N08811 . . .WP904L CR904L N08904 904LCWP1925 CR1925 N08925 . . .WP1925N CR1925N N08926 . . .WP304 CR304 S30400 304WP304L CR304L S30403 304LWP304H CR304H S30409 304HWP304N CR304N S30451 304NWP304LN CR304LN S30453 304LNWP309 CR309 S30
