ASTM A943/A943M-01(2019)
(Specification)Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
ABSTRACT
This specification covers spray-formed seamless austenitic stainless steel pipe intended for high-temperature and general corrosive service. The steel shall conform to the specified chemical composition and tensile requirements. The mechanical test requirement includes, transverse or longitudinal tension test, flattening test, hydrostatic test and grain size determination are presented. One tension tests shall be made on a specimen for lots of more than 100 pipes. For material heat treated in a batch-typed furnace, flattening tests shall be made on 5% of the pipe from each heat treated lot. Each length of finished pipe shall be subjected to hydrostatic tests.
SCOPE
1.1 This specification covers spray-formed seamless austenitic stainless steel pipe intended for high-temperature and general corrosive service.
1.2 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309Cb, TP309S, TP310Cb, TP310S, TP316, TP321, TP347, and TP348, and are intended for high-temperature service.
1.3 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.
1.4 Appendix X1 lists the dimensions of 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.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
1.5.1 Within the text, the SI units are shown in brackets.
1.5.2 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.”
1.6 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
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:A943/A943M −01 (Reapproved 2019)
Standard Specification for
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Spray-Formed Seamless Austenitic Stainless Steel Pipes
This standard is issued under the fixed designationA943/A943M; 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
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1.1 This specification covers spray-formed seamless auste- 2.1 ASTM Standards:
nitic stainless steel pipe intended for high-temperature and A262 Practices for Detecting Susceptibility to Intergranular
general corrosive service. Attack in Austenitic Stainless Steels
A450/A450M Specification for General Requirements for
1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
Carbon and Low Alloy Steel Tubes
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
modifications of Grades TP304, TP309Cb, TP309S, TP310Cb,
Alloys, and Ferroalloys
TP310S, TP316, TP321, TP347, and TP348, and are intended
A999/A999M Specification for General Requirements for
for high-temperature service.
Alloy and Stainless Steel Pipe
1.3 Optional supplementary requirements are provided for
E112 Test Methods for Determining Average Grain Size
pipe where a greater degree of testing is desired. These
E381 Method of Macroetch Testing Steel Bars, Billets,
supplementaryrequirementscallforadditionalteststobemade
Blooms, and Forgings
and,whendesired,oneormoreofthesemaybespecifiedinthe
E527 Practice for Numbering Metals and Alloys in the
order.
Unified Numbering System (UNS)
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1.4 Appendix X1 lists the dimensions of seamless stainless
2.2 ANSI/ASME Standards:
steel pipe as shown in ANSI B36.19. Pipe having other
B1.20.1 Pipe Threads, General Purpose
dimensions may be furnished provided such pipe complies B36.10 Welded and Seamless Wrought Steel Pipe
with all other requirements of this specification.
B36.19 Stainless Steel Pipe
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2.3 Other Standard:
1.5 The values stated in either SI units or inch-pound units
SAE J1086 Practice for Numbering Metals and Alloys
are to be regarded separately as standard. The values stated in
(UNS)
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
3. Terminology
values from the two systems may result in non-conformance
with the standard. 3.1 For definitions of terms used in this specification, refer
1.5.1 Within the text, the SI units are shown in brackets.
to Terminology A941.
1.5.2 The inch-pound units shall apply unless the “M”
3.2 Definitions of Terms Specific to This Standard:
designation of this specification is specified in the order.
3.2.1 spray–formed—denotes the fabrication of different
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
shapes of a metallic material by deposition of a spray,
been substituted in this standard for such traditional terms as “nominal
consisting of droplets, solid particles, and particles that are
diameter,” “size,” and “nominal size.”
partially solid, onto a moving substrate.
1.6 This international standard was developed in accor-
3.2.1.1 Discussion—The spray is produced by gas atomiza-
dance with internationally recognized principles on standard-
tion of the liquid metal or alloy. On impingement with the
ization established in the Decision on Principles for the
substrate, the species of the spray consolidate and solidify
Development of International Standards, Guides and Recom-
completely to produce a product that is essentially free of
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
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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
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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.
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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, 2019. Published March 2019. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
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approved in 1995. Last previous edition approved in 2014 as A943/A943M – 01 Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
(2014). DOI: 10.1520/A0943_A0943M-01R19. PA 15096-0001, http://www.sae.org.
Copyright © ASTM International, 10
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