ASTM A790/A790M-02

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

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 where 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: 09-Sep-2002
• 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-01 - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
• Effective Date: 10-Sep-2002
• Replaced By: ASTM A790/A790M-02a - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
• Effective Date: 10-Nov-2002
• Referred By: ASTM A999/A999M-23 - Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
• Effective Date: 10-Sep-2002
• Referred By: ASTM A554-21 - Standard Specification for Welded Stainless Steel Mechanical Tubing
• Effective Date: 10-Sep-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 790/A 790M – 02
Standard Specification for
Seamless and Welded Ferritic/Austenitic Stainless Steel
1
Pipe
This standard is issued under the fixed designation A 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope * A 999/A 999M Specification for General Requirements for
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2
Alloy and Stainless Steel Pipe
1.1 This specification covers seamless and straight-seam
E 213 Practice for Ultrasonic Examination of Metal Pipe
welded ferritic/austenitic steel pipe intended for general corro-
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and Tubing
sive service, with particular emphasis on resistance to stress
E 309 Practice for Eddy-Current Examination of Steel Tu-
corrosion cracking. These steels are susceptible to embrittle-
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bular Products Using Magnetic Saturation
ment if used for prolonged periods at elevated temperatures.
E 381 Method of Macroetch Testing Steel Bars, Billets,
1.2 Optional supplementary requirements are provided for
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Blooms, and Forgings
pipe when a greater degree of testing is desired. These
E 426 Practice for Electromagnetic (Eddy-Current) Exami-
supplementary requirements call for additional tests to be made
nation of Seamless and Welded Tubular Products, Austen-
and, when desired, one or more of these may be specified in the
5
itic Stainless Steel and Similar Alloys
order.
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E 527 Practice for Numbering Metals and Alloys (UNS)
1.3 Appendix X1 of this specification lists the dimensions
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2.2 ANSI Standards:
of welded and seamless stainless steel pipe as shown in ANSI
B1.20.1 Pipe Threads, General Purpose
B36.19. Pipe having other dimensions may be furnished
B36.10 Welded and Seamless Wrought Steel Pipe
provided such pipe complies with all other requirements of this
B36.19 Stainless Steel Pipe
specification.
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2.3 SAE Standard:
1.4 The values stated in either inch-pound units or SI units
SAE J 1086
are to be regarded separately as standard. Within the text, the
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2.4 Other Standard:
SI units are shown in brackets. The values stated in each
SNT-TC-1A Personal Qualification and Certification in
system are not exact equivalents; therefore, each system must
Nondestructive Testing
be used independently of the other. Combining values from the
two systems may result in nonconformance with the specifi-
3. Terminology
cation. The inch-pound units shall apply unless the M desig-
3.1 Definitions—For definitions of terms used in this speci-
nation of this specification is specified in the order.
fication refer to Terminology A 941.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
been substituted in this standard for such traditional terms as nominal
4. Ordering Information
diameter, size, and nominal size.
4.1 Orders for material under this specification should
include the following, as required, to describe the desired
2. Referenced Documents
material adequately:
2.1 ASTM Standards:
4.1.1 Quantity (feet, metres, or number of lengths),
A 370 Test Methods and Definitions for Mechanical Testing
4.1.2 Name of material (ferritic/austenitic steel pipe),
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of Steel Products
4.1.3 Process (seamless or welded),
A 941 Terminology Relating to Steel, Stainless Steel, Re-
4.1.4 Grade (see Table 1),
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lated Alloys and Feroalloys
4.1.5 Size (NPS designator or outside diameter and sched-
ule number of average wall thickness),
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
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Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 03.03.
6
A01.10 on Stainless and Alloy Steel Tubular Products. Annual Book of ASTM Standards, Vol 03.01.
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Current edition approved Sept. 10, 2002. Published October 2002. Originally Available from American National Standards Institute, 11 West 42nd St., 13th
published as A 790 – 81. Last previous edition A 790/A 790M – 01. Floor, New York, NY 10036.
2 8
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from Society of Automotive Engineers, 400 Commonwealth Drive,
cation SA–790 in Section II of that Code. Warrendale, PA 15096.
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Annual Book of ASTM Standards, Vol 01.03. Available from Society for Nondestructive Testing, 711 Arlingate Plaza, P.O.
4
Annual Book of ASTM Standards, Vol 01.01. Box 28518, Columbus, OH 43228-0518.
*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.
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NOTICE: This standard has either been superseded and replaced by a new ver
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