ASTM A943/A943M-01(2014)

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.”

General Information

• Status: Historical
• Publication Date: 28-Feb-2014
• 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 A943/A943M-01(2009) - Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
• Effective Date: 01-Mar-2014
• Replaced By: ASTM A943/A943M-01(2019) - Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
• Effective Date: 01-Mar-2019
• Referred By: ASTM A999/A999M-23 - Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
• Effective Date: 01-Mar-2014

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:A943/A943M −01 (Reapproved 2014)
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 A262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
1.1 This specification covers spray-formed seamless auste-
A450/A450M Specification for General Requirements for
nitic stainless steel pipe intended for high-temperature and
Carbon and Low Alloy Steel Tubes
general corrosive service.
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
Alloys, and Ferroalloys
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
A999/A999M Specification for General Requirements for
modifications of Grades TP304, TP309Cb, TP309S, TP310Cb,
Alloy and Stainless Steel Pipe
TP310S, TP316, TP321, TP347, and TP348, and are intended
E112 Test Methods for Determining Average Grain Size
for high-temperature service.
E381 Method of Macroetch Testing Steel Bars, Billets,
1.3 Optional supplementary requirements are provided for Blooms, and Forgings
E527 Practice for Numbering Metals and Alloys in the
pipe where a greater degree of testing is desired. These
supplementaryrequirementscallforadditionalteststobemade Unified Numbering System (UNS)
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and,whendesired,oneormoreofthesemaybespecifiedinthe
2.2 ANSI/ASME Standards:
order.
B1.20.1 Pipe Threads, General Purpose
B36.10 Welded and Seamless Wrought Steel Pipe
1.4 Appendix X1 lists the dimensions of seamless stainless
steel pipe as shown in ANSI B36.19. Pipe having other B36.19 Stainless Steel Pipe
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dimensions may be furnished provided such pipe complies
2.3 Other Standard:
with all other requirements of this specification.
SAE J1086 Practice for Numbering Metals and Alloys
(UNS)
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 3. Terminology
system shall be used independently of the other. Combining
3.1 For definitions of terms used in this specification, refer
values from the two systems may result in non-conformance
to Terminology A941.
with the standard.
3.2 Definitions of Terms Specific to This Standard:
1.5.1 Within the text, the SI units are shown in brackets.
3.2.1 spray–formed—denotes the fabrication of different
1.5.2 The inch-pound units shall apply unless the “M”
shapes of a metallic material by deposition of a spray,
designation of this specification is specified in the order.
consisting of droplets, solid particles, and particles that are
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
been substituted in this standard for such traditional terms as “nominal
partially solid, onto a moving substrate.
diameter,” “size,” and “nominal size.”
3.2.1.1 Discussion—The spray is produced by gas atomiza-
tion of the liquid metal or alloy. On impingement with the
2. Referenced Documents
substrate, the species of the spray consolidate and solidify
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2.1 ASTM Standards:
completely to produce a product that is essentially free of
porosity. The metallurgical characteristics of the spray-formed
productarecontrolledprimarilybythethermalconditionofthe
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
spray, and that of the surface of the metallic deposit formed on
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
the substrate.
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved March 1, 2014. Published March 2014. Originally
approved in 1995. Last previous edition approved in 2009 as A943/A943M – 01
(2009). DOI: 10.1520/A0943_A0943M-01R14.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
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Standards volume information, refer to the standard’s Document Summary page on Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
the ASTM website. PA 15096-0001, http://www.sae.org.
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A943/A943M−01 (2014)
4. Ordering Information 4.1.1 Quantity (feet, centimetres, or number of lengths),
4.1.2 Name of material (austenitic steel
...