ASTM A790/A790M-24
(Specification)Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
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 specification2 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 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 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Buy Standard
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A790/A790M − 24
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designation A790/A790M; 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. Referenced Documents
2
3
1.1 This specification covers seamless and straight-seam
2.1 ASTM Standards:
welded ferritic/austenitic steel pipe intended for general corro-
A370 Test Methods and Definitions for Mechanical Testing
sive service, with particular emphasis on resistance to stress
of Steel Products
corrosion cracking. These steels are susceptible to embrittle-
A923 Test Methods for Detecting Detrimental Intermetallic
ment if used for prolonged periods at elevated temperatures.
Phase in Duplex Austenitic/Ferritic Stainless Steels
1.2 Optional supplementary requirements are provided for A941 Terminology Relating to Steel, Stainless Steel, Related
pipe when a greater degree of testing is desired. These Alloys, and Ferroalloys
supplementary requirements call for additional tests to be made A999/A999M Specification for General Requirements for
and, when desired, one or more of these may be specified in the
Alloy and Stainless Steel Pipe
order.
E213 Practice for Ultrasonic Testing of Metal Pipe and
Tubing
1.3 Appendix X1 of this specification lists the dimensions of
E309 Practice for Eddy Current Examination of Steel Tubu-
welded and seamless stainless steel pipe as shown in ANSI
lar Products Using Magnetic Saturation
B36.19. Pipe having other dimensions may be furnished
E381 Method of Macroetch Testing Steel Bars, Billets,
provided such pipe complies with all other requirements of this
Blooms, and Forgings
specification.
E426 Practice for Electromagnetic (Eddy Current) Examina-
1.4 The values stated in either SI units or inch-pound units
tion of Seamless and Welded Tubular Products, Titanium,
are to be regarded separately as standard. Within the text, the
Austenitic Stainless Steel and Similar Alloys
SI units are shown in brackets. The values stated in each
E527 Practice for Numbering Metals and Alloys in the
system may not be exact equivalents; therefore, each system
Unified Numbering System (UNS)
shall be used independently of the other. Combining values
4
from the two systems may result in non-conformance with the
2.2 ANSI Standards:
standard. The inch-pound units shall apply unless the M
B1.20.1 Pipe Threads, General Purpose
designation of this specification is specified in the order.
B36.10 Welded and Seamless Wrought Steel Pipe
B36.19 Stainless Steel Pipe
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
been substituted in this standard for such traditional terms as nominal 5
2.3 SAE Standard:
diameter, size, and nominal size.
SAE J 1086
1.5 This international standard was developed in accor-
6
2.4 Other Standard:
dance with internationally recognized principles on standard-
SNT-TC-1A Personal Qualification and Certification in
ization established in the Decision on Principles for the
Nondestructive Testing
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3
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
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee the ASTM website.
4
A01.10 on Stainless and Alloy Steel Tubular Products. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Current edition approved March 1, 2024. Published March 2024. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
5
approved in 1981. Last previous edition approved in 2023 as A790/A790M – 23. Available from Society of Automotive Engineers (SAE), 400 Commonwealth
DOI: 10.1520/A0790_A0790M-24. Dr., Warrendale, PA 15096-0001, http://www.sae.org.
2 6
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American Society for Nondestructive Testing (ASNT), P.O. Box
cation SA–790 in Section II of that Code. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM Internationa
...
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: A790/A790M − 23 A790/A790M − 24
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designation A790/A790M; 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 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 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 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10
on Stainless and Alloy Steel Tubular Products.
Current edition approved May 1, 2023March 1, 2024. Published May 2023March 2024. Originally approved in 1981. Last previous edition approved in 20222023 as
A790/A790M – 22.A790/A790M – 23. DOI: 10.1520/A0790_A0790M-23.10.1520/A0790_A0790M-24.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA–790 in Section II of that Code.
3
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 the ASTM website.
*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 ----------------------
A790/A790M − 24
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 and Welded Tubular Products, Titanium, 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
6
2.4 Other Standard:
SNT-TC-1A Personal Qualification and Certification in Nondestructive Testing
7
2.5 AWS Standard:
A5.9 Corrosion-Resisting Chromium and C
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.