ASTM A790/A790M-08a

Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

ABSTRACT
The specification covers seamless and straight-seam welded ferritic/austenitic steel pipe for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic tests and nondestructive electric tests shall be made to conform to the specified requirements.
SCOPE
1.1 This specification covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.  
1.2 Optional supplementary requirements are provided for pipe when a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.  
1.3 Appendix X1 of this specification lists the dimensions of welded and seamless stainless steel pipe as shown in ANSI B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.  
1.4 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 this specification is specified in the order.
Note 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

General Information

• Status: Historical
• Publication Date: 30-Sep-2008
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.10 - Stainless and Alloy Steel Tubular Products

Relations

• Replaces: ASTM A790/A790M-08 - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
• Effective Date: 01-Oct-2008
• Replaced By: ASTM A790/A790M-09 - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
• Effective Date: 01-Aug-2009
• Referred By: ASTM A999/A999M-23 - Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
• Effective Date: 01-Oct-2008
• Referred By: ASTM A554-21 - Standard Specification for Welded Stainless Steel Mechanical Tubing
• Effective Date: 01-Oct-2008

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: A 790/A 790M – 08a
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designationA 790/A 790M; 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* A 370 Test Methods and Definitions for MechanicalTesting
2 of Steel Products
1.1 This specification covers seamless and straight-seam
A 923 TestMethodsforDetectingDetrimentalIntermetallic
welded ferritic/austenitic steel pipe intended for general corro-
Phase in Duplex Austenitic/Ferritic Stainless Steels
sive service, with particular emphasis on resistance to stress
A 941 Terminology Relating to Steel, Stainless Steel, Re-
corrosion cracking. These steels are susceptible to embrittle-
lated Alloys, and Ferroalloys
ment if used for prolonged periods at elevated temperatures.
A 999/A 999M Specification for General Requirements for
1.2 Optional supplementary requirements are provided for
Alloy and Stainless Steel Pipe
pipe when a greater degree of testing is desired. These
E 213 Practice for Ultrasonic Examination of Metal Pipe
supplementaryrequirementscallforadditionalteststobemade
and Tubing
and,whendesired,oneormoreofthesemaybespecifiedinthe
E 309 Practice for Eddy-Current Examination of Steel Tu-
order.
bular Products Using Magnetic Saturation
1.3 Appendix X1 of this specification lists the dimensions
E 381 Method of Macroetch Testing Steel Bars, Billets,
of welded and seamless stainless steel pipe as shown in ANSI
Blooms, and Forgings
B36.19. Pipe having other dimensions may be furnished
E 426 Practice for Electromagnetic (Eddy-Current) Exami-
provided such pipe complies with all other requirements of this
nation of Seamless and Welded Tubular Products, Austen-
specification.
itic Stainless Steel and Similar Alloys
1.4 The values stated in either inch-pound units or SI units
E 527 Practice for Numbering Metals and Alloys in the
are to be regarded separately as standard. Within the text, the
Unified Numbering System (UNS)
SI units are shown in brackets. The values stated in each
4
2.2 ANSI Standards:
system are not exact equivalents; therefore, each system must
B1.20.1 Pipe Threads, General Purpose
be used independently of the other. Combining values from the
B36.10 Welded and Seamless Wrought Steel Pipe
two systems may result in nonconformance with the specifi-
B36.19 Stainless Steel Pipe
cation. The inch-pound units shall apply unless the M desig-
5
2.3 SAE Standard:
nation of this specification is specified in the order.
SAE J 1086
NOTE 1—The dimensionless designator NPS (nominal pipe size) has 6
2.4 Other Standard:
been substituted in this standard for such traditional terms as nominal
SNT-TC-1A Personal Qualification and Certification in
diameter, size, and nominal size.
Nondestructive Testing
2.5 AWS Standard
2. Referenced Documents
3 A5.9 Corrosion-Resisting Chromium and Chromium-
2.1 ASTM Standards:
Nickel Steel Welding Rods and Electrodes
3. Terminology
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
3.1 Definitions—For definitions of terms used in this speci-
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products.
fication refer to Terminology A 941.
Current edition approved Oct. 1, 2008. Published November 2008. Originally
approved in 1981. Last previous edition approved in 2008 as A 790/A 790M – 08.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
cation SA–790 in Section II of that Code. 4th Floor, New York, NY 10036, http://www.ansi.org.
3 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Society of Automotive Engineers (SAE), 400 Commonwealth
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Dr., Warrendale, PA 15096-0001, http://www.sae.org.
6
Standards volume information, refer to the standard’s Document Summary page on
AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
the ASTM website. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.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 790/A 790M – 08a
4. Ordering Information 5. General Requirements
4.1 Orders for material under this specification should
5.1 Material furnished under this specification
...

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:A790/A790M–08 Designation: A 790/A 790M – 08a
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designationA 790/A 790M; 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*
2
1.1 This specification covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive
service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used
for prolonged periods at elevated temperatures.
1.2 Optionalsupplementaryrequirementsareprovidedforpipewhenagreaterdegreeoftestingisdesired.Thesesupplementary
requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.
1.3 Appendix X1 of this specification lists the dimensions of welded and seamless stainless steel pipe as shown in ANSI
B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this
specification.
1.4 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 this specification is specified in the order.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter,
size, and nominal size.
2. Referenced Documents
3
2.1 ASTM Standards:
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
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 213 Practice for Ultrasonic Examination of Metal Pipe and Tubing
E 309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation
E 381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E 426 PracticeforElectromagnetic(Eddy-Current)ExaminationofSeamlessandWeldedTubularProducts,AusteniticStainless
Steel and Similar Alloys
E 527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
4
2.2 ANSI Standards:
B1.20.1 Pipe Threads, General Purpose
B36.10 Welded and Seamless Wrought Steel Pipe
B36.19 Stainless Steel Pipe
5
2.3 SAE Standard:
SAE J 1086
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 MarchOct. 1, 2008. Published AprilNovember 2008. Originally approved in 1981. Last previous edition approved in 20072008 as
A 790/A 790M – 07a8.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA–790 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
5
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.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 790/A 790M – 08a
6
2.4 Other Standard:
SNT-TC-1A Personal Qualification and Certification in Nondestructive Testing
2.5 AWS Standard
A5.9 Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Electrodes
3. Terminology
3.1 Definitions—For definitions of terms used in this specification refer to Terminology A 941.
4. Ordering Information
...

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:A 790/A 790M–08 Designation: A 790/A 790M – 08a
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designationA 790/A 790M; 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*
2
1.1 This specification covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive
service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used
for prolonged periods at elevated temperatures.
1.2 Optionalsupplementaryrequirementsareprovidedforpipewhenagreaterdegreeoftestingisdesired.Thesesupplementary
requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.
1.3 Appendix X1 of this specification lists the dimensions of welded and seamless stainless steel pipe as shown in ANSI
B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this
specification.
1.4 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 this specification is specified in the order.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter,
size, and nominal size.
2. Referenced Documents
3
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Pipe
E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing
E309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless andWeldedTubular Products,Austenitic Stainless
Steel and Similar Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
4
2.2 ANSI Standards:
B1.20.1 Pipe Threads, General Purpose
B36.10 Welded and Seamless Wrought Steel Pipe
B36.19 Stainless Steel Pipe
5
2.3 SAE Standard:
SAE J 1086
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 MarchOct. 1, 2008. Published AprilNovember 2008. Originally approved in 1981. Last previous edition approved in 20072008 as
A 790/A 790M – 07a8.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA–790 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
5
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.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 790/A 790M – 08a
6
2.4 Other Standard:
SNT-TC-1A Personal Qualification and Certification in Nondestructive Testing
2.5 AWS Standard
A5.9 Corrosion-Resisting Chromium and Chromium-Nickel Steel Welding Rods and Electrodes
3. Terminology
3.1 Definitions—For definitions of terms used in this specification refer to Terminology A 941.A941
4. Ordering Information
...