ASTM A928/A928M-08a
(Specification)Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
ABSTRACT
This specification covers standard requirements for ferritic/austenitic (duplex) stainless steel pipe that is electric fusion welded with addition of filler metal suitable for corrosive service. Heat treatment shall be performed after welding and in accordance with specified temperature and quench conditions. Several grades of ferritic/austenitic steel shall conform to the requirements of the applicable specification and grade designation. Heat and product analyses shall be conducted and shall conform to the requirements for the particular grade. The plate used in making the pipe shall conform to the required tensile properties. The steel pipe shall undergo several mechanical tests including transverse tension test, transverse guided-bend test, nondestructive test, hydrostatic test, and nondestructive electric test.
SCOPE
1.1 This specification covers electric-fusion-welded steel pipe suitable for corrosive service.
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this specification for traditional terms such as nominal diameter, size, and nominal size.
1.2 This specification covers grades of ferritic/austenitic steel as indicated in Table 1. The selection of the proper alloy and requirements for heat treatment shall be at the discretion of the purchaser, dependent on the service conditions to be encountered.
1.3 Five classes of pipe are covered as follows:
1.3.1 Class 1—Pipe shall be double welded by processes using filler metal in all passes and shall be radiographed completely.
1.3.2 Class 2—Pipe shall be double welded by processes using filler metal in all passes. No radiograph is required.
1.3.3 Class 3—Pipe shall be single welded by processes using filler metal in all passes and shall be radiographed completely.
1.3.4 Class 4—Same as Class 3, except that the weld pass exposed to the inside pipe surface is permitted to be made without the addition of filler metal (see 6.2.2.1 and 6.2.2.2).
1.3.5 Class 5—Pipe shall be double welded by processes using filler metal in all passes and shall be spot radiographed.
1.4 Supplementary requirements covering provisions ranging from additional testing to formalized procedures for manufacturing practice are provided. Supplementary Requirements S1 through S4 are included as options to be specified in the purchase order when desired.
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. The inch-pound units shall apply unless the M designation of the specification is specified in the order.
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Designation: A 928/A 928M – 08a
Standard Specification for
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric
1
Fusion Welded with Addition of Filler Metal
This standard is issued under the fixed designationA 928/A 928M; 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.
1. Scope* cation. The inch-pound units shall apply unless the M desig-
nation of the specification is specified in the order.
1.1 This specification covers electric-fusion-welded steel
pipe suitable for corrosive service.
2. Referenced Documents
NOTE 1—The dimensionless designator NPS (nominal pipe size) has 2
2.1 ASTM Standards:
been substituted in this specification for traditional terms such as nominal
A 240/A 240M Specification for Chromium and
diameter, size, and nominal size.
Chromium-Nickel Stainless Steel Plate, Sheet, and Strip
1.2 This specification covers grades of ferritic/austenitic
for Pressure Vessels and for General Applications
steel as indicated in Table 1. The selection of the proper alloy
A 480/A 480M Specification for General Requirements for
andrequirementsfor heat treatment shall be at the discretionof
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
the purchaser, dependent on the service conditions to be
Sheet, and Strip
encountered.
A 941 Terminology Relating to Steel, Stainless Steel, Re-
1.3 Five classes of pipe are covered as follows:
lated Alloys, and Ferroalloys
1.3.1 Class 1—Pipe shall be double welded by processes
A 999/A 999M Specification for General Requirements for
using filler metal in all passes and shall be radiographed
Alloy and Stainless Steel Pipe
completely.
E 426 Practice for Electromagnetic (Eddy-Current) Exami-
1.3.2 Class 2—Pipe shall be double welded by processes
nation of Seamless and Welded Tubular Products, Austen-
using filler metal in all passes. No radiograph is required.
itic Stainless Steel and Similar Alloys
3
1.3.3 Class 3—Pipe shall be single welded by processes
2.2 ASME Boiler and Pressure Vessel Code:
using filler metal in all passes and shall be radiographed
Section III, Nuclear Vessels
completely.
Section VIII, Unfired Pressure Vessels
1.3.4 Class 4—Same as Class 3, except that the weld pass
Section IX, Welding Qualifications
4
exposed to the inside pipe surface is permitted to be made
2.3 AWS Specifications:
without the addition of filler metal (see 6.2.2.1 and 6.2.2.2).
A 5.4 Corrosion-Resisting Chromium and Chromium-
1.3.5 Class 5—Pipe shall be double welded by processes
Nickel Steel Covered Welding Electrodes
using filler metal in all passes and shall be spot radiographed.
A 5.9 Corrosion-Resisting Chromium and Chromium-
1.4 Supplementary requirements covering provisions rang-
Nickel Steel Welding Rods and Bare Electrodes
ing from additional testing to formalized procedures for
A 5.11 Nickel and Nickel-Alloy Covered Welding Elec-
manufacturing practice are provided. Supplementary Require-
trodes
ments S1 through S4 are included as options to be specified in
A 5.14 Nickel and Nickel-Alloy Bare Welding Rods and
the purchase order when desired.
Electrodes
1.5 The values stated in either inch-pound units or SI units
A 5.22 Flux Cored Corrosion-Resisting Chromium and
are to be regarded separately as standard. Within the text, the
Chromium-Nickel Steel Electrodes
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
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
two systems may result in nonconformance with the specifi-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1 3
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Available from American Society of Mechanical Engineers (ASME), ASME
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
A01.10 on Stainless and Alloy Steel Tubular Products. www.asme.org.
4
Current edition approved March 1, 2008. Published April 2008. Originally Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
approved in 1994. Last previous edition approved in 2008 as A 928/A 928M – 08. Miami, FL 33126, http://www.aws.org.
*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
...
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:A928/A928M–08 Designation: A 928/A 928M – 08a
Standard Specification for
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric
1
Fusion Welded with Addition of Filler Metal
This standard is issued under the fixed designationA 928/A 928M; 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.
1. Scope*
1.1 This specification covers electric-fusion-welded steel pipe suitable for corrosive service.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this specification for traditional terms such as nominal
diameter, size, and nominal size.
1.2 This specification covers grades of ferritic/austenitic steel as indicated in Table 1. The selection of the proper alloy and
requirements for heat treatment shall be at the discretion of the purchaser, dependent on the service conditions to be encountered.
1.3 Five classes of pipe are covered as follows:
1.3.1 Class 1—Pipe shall be double welded by processes using filler metal in all passes and shall be radiographed completely.
1.3.2 Class 2—Pipe shall be double welded by processes using filler metal in all passes. No radiograph is required.
1.3.3 Class 3—Pipe shall be single welded by processes using filler metal in all passes and shall be radiographed completely.
1.3.4 Class 4—Same as Class 3, except that the weld pass exposed to the inside pipe surface is permitted to be made without
the addition of filler metal (see 6.2.2.1 and 6.2.2.2).
1.3.5 Class 5—Pipe shall be double welded by processes using filler metal in all passes and shall be spot radiographed.
1.4 Supplementary requirements covering provisions ranging from additional testing to formalized procedures for manufac-
turing practice are provided. Supplementary Requirements S1 through S4 are included as options to be specified in the purchase
order when desired.
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. The
inch-pound units shall apply unless the M designation of the specification is specified in the order.
2. Referenced Documents
2
2.1 ASTM Standards:
A 240/A 240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels
and for General Applications
A 480/A 480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and
Strip
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A 999/A 999M Specification for General Requirements for Alloy and Stainless Steel Pipe
E 426 PracticeforElectromagnetic(Eddy-Current)ExaminationofSeamlessandWeldedTubularProducts,AusteniticStainless
Steel and Similar Alloys
3
2.2 ASME Boiler and Pressure Vessel Code:
Section III, Nuclear Vessels
Section VIII, Unfired Pressure Vessels
Section IX, Welding Qualifications
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.10
on Stainless and Alloy Steel Tubular Products.
Current edition approved Jan.March 1, 2008. Published JanuaryApril 2008. Originally approved in 1994. Last previous edition approved in 20052008 as
A 928/A 928M – 058.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s 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.
*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 ----------------------
A 928/A 928M – 08a
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2.3 AWS Specifications:
A 5.4 Corrosion-Resisting Chromium and Chromium-Nickel Steel Covered Welding Electrodes
A 5.9 Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Bare Electrodes
A 5
...
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