ASTM A928/A928M-09a
(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 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. The inch-pound units shall apply unless the M designation of the specification is specified in the order.
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Designation: A928/A928M – 09a
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 designationA928/A928M; 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.
1. Scope* standard. The inch-pound units shall apply unless the M
designation 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
A240/A240M Specification for Chromium and Chromium-
diameter, size, and nominal size.
Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
1.2 This specification covers grades of ferritic/austenitic
Vessels and for General Applications
steel as indicated in Table 1. The selection of the proper alloy
A480/A480M Specification for General Requirements for
andrequirementsforheattreatmentshallbeatthediscretionof
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
the purchaser, dependent on the service conditions to be
Sheet, and Strip
encountered.
A941 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
A999/A999M Specification for General Requirements for
using filler metal in all passes and shall be radiographed
Alloy and Stainless Steel Pipe
completely.
E426 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, Auste-
using filler metal in all passes. No radiograph is required.
nitic 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 SI units or inch-pound 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
A 5.30 Consumable Weld Inserts for Gas Tungsten Arc
system may not be exact equivalents; therefore, each system
Welding
shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, the ASTM website.
3
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Available from American Society of Mechanical Engineers (ASME), ASME
A01.10 on Stainless and Alloy Steel Tubular Products. International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Current edition approved Nov. 1, 2009. Published December 2009. Originally www.asme.org.
4
approved in 1994. Last previous edition approved in 2009 as A928/A928M – 09. Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
DOI: 10.1520/A0928_A0928M-09a. 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 Conshohoc
...
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–09 Designation: A928/A928M – 09a
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 designationA928/A928M; 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.
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 The values stated in either inch-poundSI units or SIinch-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 aremay not be exact equivalents; therefore, each system
mustshall be used independently of the other. Combining values from the two systems may result in non-conformance with the
specification.standard. 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:
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels
and for General Applications
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
E426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless andWeldedTubular Products,Austenitic Stainless
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
4
2.3 AWS Specifications:
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 Aug.Nov. 1, 2009. Published SeptemberDecember 2009. Originally approved in 1994. Last previous edition approved in 20082009 as
A928/A928M–08a.A928/A928M – 09. DOI: 10.1520/A0928_A0928M-09a.
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.
4
Available from American Welding Society (AWS), 550 NW LeJeune Rd., 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
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