1、Designation: A403/A403M 16A403/A403M 18Standard 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 U.S. Department of Defense.1. Scope*1.1 This specification cov
3、ers wrought 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 e
4、ach of 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
5、 fitting 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 appli
6、cable“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 e
7、xact 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/
8、A351M, A743/A743M, and A744/A744M.1.7 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Org
9、anization Technical Barriers to Trade (TBT) Committee.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
10、/A744M Specification for 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 Ave
11、rage Grain SizeE165E165/E165M Practice 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 Threaded1 This specification is under the jurisdiction ofASTM Committee A0
12、1 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 Piping and Special Purpose Applications.Current edition approved May 1, 2016March 1, 2018. Published May 2016M
13、arch 2018. Originally approved in 1956. Last previous edition approved in 20152016 asA403/A403M 15.A403/A403M 16. DOI: 10.1520/A0403_A0403M-16.10.1520/A0403_A0403M-18.2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-403 in Section II of that Code.3 For referencedA
14、STM standards, visit 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.4 Available from American Society of Mechanical Engineers (ASME), ASME Interna
15、tional Headquarters, Two 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 adequa
16、tely depict all 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 In
17、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 MSS Standards: 5MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsMSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding FittingsMSS SP-79 Socket-Welding R
18、educer 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, Threaded and Buttwelding Ends2.4 ASME Boiler and Pressure Vessel Code: 4Section VIII Division ISection IX2.5 AWS
19、 Standards: 6A 5.4 Specification for Corrosion-Resisting Chromium and Chromium-Nickel Steel Covered Welding ElectrodesA 5.9 Specification for Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Bare ElectrodesA 5.11 Specification for Nickel and Nickel-Alloy Welding Electrodes for
20、 Shielded Metal Arc WeldingA5.14 Specification for Nickel and Nickel-Alloy Bare Welding Rods and Electrodes2.6 ASNT: 7SNT-TC-1A (1984) Recommended Practice for Nondestructive Testing Personnel Qualification and Certification3. Common Requirements and Ordering Information3.1 Material furnished to thi
21、s specification shall conform to the requirements of Specification A960/A960M including anysupplementary requirements that are indicated in the purchase order. Failure to comply with the common requirements ofSpecification A960/A960M constitutes nonconformance with this specification. In case of con
22、flict between this specification andSpecification A960/A960M, this specification shall prevail.3.2 Specification A960/A960M identifies the ordering information that should be complied with when purchasing material tothis specification.4. Material4.1 The material for fittings shall consist of forging
23、s, 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 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 furn
24、ace, 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 as 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.
25、5 orcoarser.5. Manufacture5.1 FormingForging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling,bending, fusion welding, machining, or by a combination of two or more of these operations. The forming procedure shall be soapplied that it will not pr
26、oduce 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 shall 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 Available
27、from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.6 Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http:/www.aws.org.7 Available from American Society for Nondestructive Te
28、sting (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 182TABLE 2 Chemical Req
29、uirementsNOTE 1Where an ellipsis (.) appears in this table, there is no requirement and the element need neither be analyzed for or reported.GradeA Composition, %Grade WP Grade CR UNS Des-ignationCCarbonB MnMan-ganeseBPPhos-phorousBSSul-phurBSiSiliconB NiNickel CrChromium MoMolybdenum TiTitanium NNi
30、trogenC 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 . . . 0.200.40DWPXM-19 CRXM-19 S20910 0.06 4.06.0 0.045 0.030 1.00 11.513.5 20.523.5 1.503.00 . . . 0.200.40EWP20CB CR20CB N08020 0.07 2.00 0.045 0.035 1.00 32.038.0 19.021.0 2.003.00 . . . Cu 3.0-4.0Cb 8XC
31、min,1.00 maxWP20CB CR20CB N08020 0.07 2.00 0.045 0.035 1.00 32.038.0 19.021.0 2.003.00 . . . Cu 3.04.0NbD 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
32、minWP700 CR700 N08700 0.04 2.00 0.040 0.030 1.00 24.026.0 19.023.0 4.35.0 Cu 0.50NbD 8XC minWPNIC CRNIC N08800 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 minWPNIC10 CRNIC10 N08810 0.05 0.10 1.50 0.045 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . .
33、Al 0.150.60Cu 0.75Fe 39.5 minWPNIC10 CRNIC10 N08810 0.050.10 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 0.06 0.10 1.50 0.040 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . . Al 0.150.60Cu 0.75Fe 39.5 minWPNIC11 CRNIC11 N08811 0.0
34、60.10 1.50 0.040 0.015 1.00 30.035.0 19.023.0 . . . 0.150.60 . . . Al 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 0.8-1.5WP1925 CR1925 N08
35、925 0.020 1.00 0.045 0.030 0.50 24.026.0 19.021.0 6.07.0 0.100.20 Cu 0.81.5WP1925N CR1925N N08926 0.020 2.00 0.030 0.010 0.50 24.026.0 19.021.0 6.07.0 . . . 0.150.25 Cu 0.5-1.5WP1925N CR1925N N08926 0.020 2.00 0.030 0.010 0.50 24.026.0 19.021.0 6.07.0 . . . 0.150.25 Cu 0.51.5WP304 CR304 S30400 0.08
36、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 . . . . . . . . . . . .WP304L CR304L S30403 0.030F 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.
37、0 18.020.0 . . . . . . . . . . . .WP304N CR304N S30451 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 . . . . . . . . . .
38、 . .WP310S CR310S S31008 0.08 2.00 0.045 0.030 1.00 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 . . . 0.180.25Cu 0.501.00WPS31266 CRS31266 S31266 0.030 2.004.00 0.035 0.020 1.00 21.0024.00 23.0025.00 5.26.2 . . . 0.350.60 Cu
39、1.002.50W 1.502.50WP316 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 16.018.0 2.003.00 . . . . . . . . .WP316L CR316L S31603 0.030F 2.00 0.045 0.030 1.00 10.014.0G 16.018.0 2.003.00 . . . . . . . . .WP
40、316H CR316H S31609 0.040.10 2.00 0.045 0.030 1.00 10.014.0 16.018.0 2.00-3.00 . . . . . . . . .WP316H CR316H S31609 0.040.10 2.00 0.045 0.030 1.00 10.014.0 16.018.0 2.003.00 . . . . . . . . .A403/A403M183TABLE 2 ContinuedGradeA Composition, %Grade WP Grade CR UNS Des-ignationCCarbonB MnMan-ganeseBPP
41、hos-phorousBSSul-phurBSiSiliconB NiNickel CrChromium MoMolybdenum TiTitanium NNitrogenC OthersWP316N 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. . .WP316N CR316N S31651 0.08 2.00 0.045 0.030 1.00 10.013.0 16.018.0 2.003.00 . . . 0.100.16. . .WP316LN CR316LN S
42、31653 0.030 2.00 0.045 0.030 1.00 10.013.0 16.018.0 2.003.00 . . . 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
43、 0.030 1.00 13.517.5 18.020.0 4.05.0 . . . 0.20 . . .WPS31726 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 2.84.0WPS31730 CRS31730 S31730 0.030 2.00 0.040 0.010 1
44、.00 15.016.5 17.019.0 3.04.0 . . . 0.045 Cu 4.05.0WPS32053 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 S32100 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . G . . . . . .WP321 CR321 S32100 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . H
45、. . . . . .WP321H CR321H S32109 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . H . . . . . .WP321H CR321H S32109 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . I . . . . . .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
46、 0.61.0NbD 0.61.0WPS34565 CRS34565 S34565 0.030 5.07.0 0.030 0.010 1.00 16.018.0 23.025.0 4.05.0 . . . 0.400.60Cb 0.10WPS34565 CRS34565 S34565 0.030 5.07.0 0.030 0.010 1.00 16.018.0 23.025.0 4.05.0 . . . 0.400.60NbD 0.10WP347 CR347 S34700 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . .
47、 IWP347 CR347 S34700 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . JWP347H CR347H S34709 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . JWP347H CR347H S34709 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . KWP347LN CR347LN S34751 0.0050.0202.00 0.
48、045 0.030 1.00 9.013.0 17.019.0 . . . . . . . . . Cb 0.200.50,K N0.060.10CWP347LN CR347LN S34751 0.0050.0202.00 0.045 0.030 1.00 9.013.0 17.019.0 . . . . . . . . . NbD 0.200.50,L 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)1.10WP348 CR348 S34
49、800 0.08 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . NbD +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)1.10WP348H CR348H S34809 0.040.10 2.00 0.045 0.030 1.00 9.012.0 17.019.0 . . . . . . . . . NbD +Ta=8(C)1.10Ta 0.10Co 0.20WPS38815 CRS38815 S38815 0.030 2.0
