ASTM A790/A790M-12
(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.
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Designation:A790/A790M −12
StandardSpecification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designationA790/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* A370 Test Methods and Definitions for Mechanical Testing
2 of Steel Products
1.1 This specification covers seamless and straight-seam
A923 Test Methods for Detecting Detrimental Intermetallic
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
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
corrosion cracking. These steels are susceptible to embrittle-
Alloys, and Ferroalloys
ment if used for prolonged periods at elevated temperatures.
A999/A999M 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
E213 Practice for Ultrasonic Testing of Metal Pipe and
supplementaryrequirementscallforadditionalteststobemade
Tubing
and,whendesired,oneormoreofthesemaybespecifiedinthe
E309 Practice for Eddy-Current Examination of Steel Tubu-
order.
lar Products Using Magnetic Saturation
1.3 AppendixX1ofthisspecificationliststhedimensionsof E381 Method of Macroetch Testing Steel Bars, Billets,
Blooms, and Forgings
welded and seamless stainless steel pipe as shown in ANSI
B36.19. Pipe having other dimensions may be furnished E426 PracticeforElectromagnetic(Eddy-Current)Examina-
tion of Seamless and Welded Tubular Products, Titanium,
provided such pipe complies with all other requirements of this
specification. Austenitic Stainless Steel and Similar Alloys
E527 Practice for Numbering Metals and Alloys in the
1.4 The values stated in either SI units or inch-pound units
Unified Numbering System (UNS)
are to be regarded separately as standard. Within the text, the
4
2.2 ANSI Standards:
SI units are shown in brackets. The values stated in each
B1.20.1 Pipe Threads, General Purpose
system may not be exact equivalents; therefore, each system
B36.10 Welded and Seamless Wrought Steel Pipe
shall be used independently of the other. Combining values
B36.19 Stainless Steel Pipe
from the two systems may result in non-conformance with the
5
standard. The inch-pound units shall apply unless the M 2.3 SAE Standard:
designation of this specification is specified in the order. SAE J 1086
6
2.4 Other Standard:
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
SNT-TC-1A Personal Qualification and Certification in
been substituted in this standard for such traditional terms as nominal
diameter, size, and nominal size.
Nondestructive Testing
2.5 AWS Standard
2. Referenced Documents
A5.9 Corrosion-Resisting Chromium and Chromium-Nickel
3
2.1 ASTM Standards:
Steel Welding Rods and Electrodes
3. Terminology
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee 3.1 Definitions—For definitions of terms used in this speci-
A01.10 on Stainless and Alloy Steel Tubular Products.
fication refer to Terminology A941.
Current edition approved Sept. 1, 2012. Published December 2012. Originally
approved in 1981. Last previous edition approved in 2011 as A790/A790M–11.
DOI: 10.1520/A0790_A0790M-12.
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 service@astm.org. 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.
*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−12
4. Ordering Information 4.1.8 Optional requirements (product analysis, Section 9;
hydrostatic test or nondestructive electric test, Section 14),
4.1 Orders for mat
...
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 − 11 A790/A790M − 12
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.
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 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
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 Oct. 15, 2011Sept. 1, 2012. Published November 2011December 2012. Originally approved in 1981. Last previous edition approved in 20102011
as A790/A790M–10.–11. DOI: 10.1520/A0790_A0790M-11.10.1520/A0790_A0790M-12.
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.
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.
*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 − 12
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 Definit
...
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