ASTM A403/A403M-07a
(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). 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 inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications A 351/A 351M, A 743/A 743M, and A 744/A 744M.
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Designation: A403/A403M – 07a
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. Referenced Documents
3
1.1 This specification covers wrought stainless steel fittings 2.1 ASTM Standards:
2
for pressure piping applications. A351/A351M Specification for Castings, Austenitic, for
1.2 Several grades of austenitic stainless steel alloys are Pressure-Containing Parts
included in this specification Grades are designated with a A370 Test Methods and Definitions for Mechanical Testing
prefix, WP or CR, based on the applicable ASME or MSS of Steel Products
dimensional and rating standards, respectively. A480/A480M Specification for General Requirements for
1.3 For each of the WP stainless grades, several classes of Flat-Rolled Stainless and Heat-Resisting Steel Plate,
fittings are covered, to indicate whether seamless or welded Sheet, and Strip
construction was utilized. Class designations are also utilized A743/A743M Specification for Castings, Iron-Chromium,
to indicate the nondestructive test method and extent of Iron-Chromium-Nickel, Corrosion Resistant, for General
nondestructive examination (NDE). Table 1 is a general Application
summary of the fitting classes applicable to all WP grades of A744/A744M Specification for Castings, Iron-Chromium-
stainless steel covered by this specification. There are no Nickel, Corrosion Resistant, for Severe Service
classes for the CR grades. Specific requirements are covered A751 Test Methods, Practices, andTerminology for Chemi-
elsewhere. cal Analysis of Steel Products
1.4 This specification is expressed in both inch-pound units A960/A960M Specification for Common Requirements for
and in SI units. However, unless the order specifies the Wrought Steel Piping Fittings
applicable “M” specification designation (SI units), the mate- E112 Test Methods for Determining Average Grain Size
rial shall be furnished to inch-pound units. E165 PracticeforLiquidPenetrantExaminationforGeneral
1.5 The values stated in either inch-pound units or SI units Industry
4
are to be regarded separately as standard. Within the text, the 2.2 ASME Standards:
SI units are shown in brackets. The values stated in each ASME B16.9 Factory-Made Wrought Steel Butt-Welding
system are not exact equivalents; therefore, each system must Fittings
be used independently of the other. Combining values from the ASME B16.11 Forged Steel Fittings, Socket-Welding and
two systems may result in nonconformance with the specifi- Threaded
5
cation. 2.3 MSS Standards:
1.6 This specification does not apply to cast steel fittings. MSS SP-25 Standard Marking System for Valves, Fittings,
Austenitic stainless steel castings are covered in Specifications Flanges, and Unions
A351/A351M, A743/A743M, and A744/A744M. MSS SP-43 Standard Practice for Light Weight Stainless
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Stainless Steel and RelatedAlloys 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 Nov. 1, 2007. Published December 2007. Originally International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
approved in 1956. Last previous edition approved in 2007 as A403/A403M-07. www.asme.org.
5
DOI: 10.1520/A0403_A0403M-07A. 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.
*ASummary 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 – 07a
Steel Butt-Welding Fittings 5. Manufacture
MSS SP-79 Socket-Welding Reducer Inserts
5.1 Forming—Forging or shaping operations may be per-
MSS SP-83 Steel Pipe Unions, So
...
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. 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–07 Designation: A 403/A 403M – 07a
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA 403/A 403M; 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 (e) 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 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications
A 351/A 351M, A 743/A 743M, and A 744/A 744M.
2. Referenced Documents
3
2.1 ASTM Standards:
A 351/A 351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 480/A 480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and
Strip
A 743/A 743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Applica-
tion
A 744/A 744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A 960/A 960M Specification for Common Requirements for Wrought Steel Piping Fittings
E 112 Test Methods for Determining Average Grain Size
E 165 Test Method for Liquid Penetrant Examination
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
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 AprilNov. 1, 2007. Published MayDecember 2007. Originally approved in 1956. Last previous edition approved in 20062007 as
A 403/A 403M-067.
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 Cons
...
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. 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–07 Designation: A 403/A 403M – 07a
Standard Specification for
1
Wrought Austenitic Stainless Steel Piping Fittings
This standard is issued under the fixed designationA 403/A 403M; 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 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.6 This specification does not apply to cast steel fittings. Austenitic stainless steel castings are covered in Specifications
A 351/A 351M, A 743/A 743M, and A 744/A 744M.
2. Referenced Documents
3
2.1 ASTM Standards:
A 351/A 351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 480/A 480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and
Strip
A 743/A 743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Applica-
tion
A 744/A 744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A 960/A 960M Specification for Common Requirements for Wrought Steel Piping Fittings
E112 Test Methods for Determining Average Grain Size
E 165 Test Method for Liquid Penetrant Examination
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
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 AprilNov. 1, 2007. Published MayDecember 2007. Originally approved in 1956. Last previous edition approved in 20062007 as
A 403/A 403M-067.
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 Consh
...
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