ASTM A403/A403M-12
(Specification)Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ABSTRACT
This specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. All fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension test shall be done on the fitting material to determine the tensile properties such as yield strength and tensile strength. Fittings supplied under this specification shall be examined visually for surface discontinuities, surface checks, and mechanical marks.
SCOPE
1.1 This specification covers wrought stainless steel fittings for pressure piping applications.
1.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WP or CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.
1.3 For each of the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or welded construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of nondestructive examination (NDE). Table 1 is a general summary of the fitting classes applicable to all WP grades of stainless steel covered 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 “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 units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently 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 Specifications A351/A351M, A743/A743M, and A744/A744M.
TABLE 1 Fitting Classes for WP Grades Class Construction Nondestructive Examination S Seamless None W Welded Radiography or Ultrasonic WX Welded Radiography WU Welded Ultrasonic
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A403/A403M −12
StandardSpecification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA403/A403M; the number immediately following the designation indicates the year
of original adoption 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
3
2.1 ASTM Standards:
1.1 This specification covers wrought stainless steel fittings
2
A351/A351M Specification for Castings, Austenitic, for
for pressure piping applications.
Pressure-Containing Parts
1.2 Several grades of austenitic stainless steel alloys are
A743/A743M Specification for Castings, Iron-Chromium,
included in this specification Grades are designated with a
Iron-Chromium-Nickel, Corrosion Resistant, for General
prefix, WP or CR, based on the applicable ASME or MSS
Application
dimensional and rating standards, respectively.
A744/A744M Specification for Castings, Iron-Chromium-
Nickel, Corrosion Resistant, for Severe Service
1.3 For each of the WP stainless grades, several classes of
A751 Test Methods, Practices, and Terminology for Chemi-
fittings are covered, to indicate whether seamless or welded
cal Analysis of Steel Products
construction was utilized. Class designations are also utilized
A960/A960M Specification for Common Requirements for
to indicate the nondestructive test method and extent of
Wrought Steel Piping Fittings
nondestructive examination (NDE). Table 1 is a general
E112 Test Methods for Determining Average Grain Size
summary of the fitting classes applicable to all WP grades of
E165 Practice for Liquid Penetrant Examination for General
stainless steel covered by this specification. There are no
Industry
classes for the CR grades. Specific requirements are covered
4
2.2 ASME Standards:
elsewhere.
ASME B16.9 Factory-Made Wrought Steel Butt-Welding
1.4 This specification is expressed in both inch-pound units
Fittings
and in SI units. However, unless the order specifies the
ASME B16.11 Forged Steel Fittings, Socket-Welding and
applicable “M” specification designation (SI units), the mate-
Threaded
5
rial shall be furnished to inch-pound units.
2.3 MSS Standards:
MSS SP-25 Standard Marking System for Valves, Fittings,
1.5 The values stated in either SI units or inch-pound units
Flanges, and Unions
are to be regarded separately as standard. Within the text, the
MSS SP-43 Standard Practice for Light Weight Stainless
SI units are shown in brackets. The values stated in each
Steel Butt-Welding Fittings
system may not be exact equivalents; therefore, each system
MSS SP-79 Socket-Welding Reducer Inserts
shall be used independently of the other. Combining values
MSS SP-83 Steel Pipe Unions, Socket-Welding and
from the two systems may result in non-conformance with the
Threaded
standard.
MSS SP-95 Swage(d) Nipples and Bull Plugs
1.6 This specification does not apply to cast steel fittings.
MSS SP-97 Integrally Reinforced Forged Branch Outlet
Austenitic stainless steel castings are covered in Specifications
Fittings—Socket Welding, Threaded and Buttwelding
A351/A351M, A743/A743M, and A744/A744M. Ends
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.22 on SteelForgingsandWroughtFittingsforPipingApplicationsandBolting the ASTM website.
4
Materials for Piping and Special Purpose Applications. Available from American Society of Mechanical Engineers (ASME), ASME
Current edition approved May 1, 2012. Published June 2012. Originally International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
approved in 1956. Last previous edition approved in 2011 as A403/A403M–11. www.asme.org.
5
DOI: 10.1520/A0403_A0403M-12. AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
cation SA-403 in Section II of that Code. hq.com.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A403/A403M−12
TABLE 1 Fitting Classes for WP Grades
4.4 Grain Size—Annealed Alloys UNS N08810 and UNS
Class Constr
...
This document is not anASTM 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. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A403/A403M–11 Designation: A403/A403M – 12
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA403/A403M; the number immediately following the designation indicates the year
of original adoption 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
2
1.1 This specification covers wrought stainless steel fittings for pressure piping applications.
1.2 Several grades of austenitic stainless steel alloys are included in this specification Grades are designated with a prefix, WP
or CR, based on the applicable ASME or MSS dimensional and rating standards, respectively.
1.3 For each of the WP stainless grades, several classes of fittings are covered, to indicate whether seamless or welded
construction was utilized. Class designations are also utilized to indicate the nondestructive test method and extent of
nondestructiveexamination(NDE).Table1isageneralsummaryofthefittingclassesapplicabletoallWPgradesofstainlesssteel
covered 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
“M” specification designation (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
independently 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 Specifications
A351/A351M, A743/A743M, and A744/A744M.
2. Referenced Documents
3
2.1 ASTM Standards:
A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Applica-
tion
A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A960/A960M Specification for Common Requirements for Wrought Steel Piping Fittings
E112 Test Methods for Determining Average Grain Size
E165 Practice for Liquid Penetrant Examination for General Industry
4
2.2 ASME Standards:
ASME B16.9 Factory-Made Wrought Steel Butt-Welding Fittings
ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded
5
2.3 MSS Standards:
MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings
MSS SP-79 Socket-Welding Reducer Inserts
MSS SP-83 Steel Pipe Unions, Socket-Welding and Threaded
MSS SP-95 Swage(d) Nipples and Bull Plugs
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved Oct.May 1, 2011.2012. Published November 2011.June 2012. Originally approved in 1956. Last previous edition approved in 20102011 as
A403/A403M–10a.A403/A403M–11. DOI: 10.1520/A0403_A0403M-112.
2
For 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 service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s 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 (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.com.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.