ASTM A943/A943M-01

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Designation: A 943/A 943M – 01
Standard Specification for
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Spray-Formed Seamless Austenitic Stainless Steel Pipes
This standard is issued under the fixed designationA 943/A 943M; 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.
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1. Scope lated Alloys, and Ferroalloys
A 999/A 999M Specification for General Requirements for
1.1 This specification covers spray-formed seamless auste-
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Alloy and Stainless Steel Pipe
nitic stainless steel pipe intended for high-temperature and
E 112 Test Methods for Determining the Average Grain
general corrosive service.
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Size
1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
E 381 Method of Macroetch Testing Steel Bars, Billets,
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
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Blooms, and Forgings
modifications of Grades TP304, TP309Cb, TP309S, TP310Cb,
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E 527 Practice for Numbering Metals and Alloys (UNS)
TP310S, TP316, TP321, TP347, and TP348, and are intended
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2.2 ANSI/ASME Standards:
for high-temperature service.
B1.20.1 Pipe Threads, General Purpose
1.3 Optional supplementary requirements are provided for
B36.10 Welded and Seamless Wrought Steel Pipe
pipe where a greater degree of testing is desired. These
B36.19 Stainless Steel Pipe
supplementaryrequirementscallforadditionalteststobemade
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2.3 Other Standard:
and,whendesired,oneormoreofthesemaybespecifiedinthe
SAE J1086 Practice for Numbering Metals and Alloys
order.
(UNS)
1.4 Appendix X1 lists the dimensions of seamless stainless
steel pipe as shown in ANSI B36.19. Pipe having other
3. Terminology
dimensions may be furnished provided such pipe complies
3.1 For definitions of terms used in this specification, refer
with all other requirements of this specification.
to Terminology A 941.
1.5 The values stated in either inch-pound units or SI units
3.2 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. Within the text, the
3.2.1 spray–formed—denotes the fabrication of different
SI units are shown in brackets. The values stated in each
shapes of a metallic material by deposition of a spray,
system are not exact equivalents; therefore, each system must
consisting of droplets, solid particles, and particles that are
be used independently of the other. Combining values from the
partially solid, onto a moving substrate.
two systems may result in nonconformance with the specifi-
3.2.1.1 Discussion—The spray is produced by gas atomiza-
cation. The inch-pound units shall apply unless the “M”
tion of the liquid metal or alloy. On impingement with the
designation of this specification is specified in the order.
substrate, the species of the spray consolidate and solidify
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
completely to produce a product that is essentially free of
been substituted in this standard for such traditional terms as “nominal
porosity. The metallurgical characteristics of the spray-formed
diameter,” “size,” and “nominal size.”
productarecontrolledprimarilybythethermalconditionofthe
spray, and that of the surface of the metallic deposit formed on
2. Referenced Documents
the substrate.
2.1 ASTM Standards:
A 262 Practices for Detecting Susceptibility to Intergranu-
4. Ordering Information
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lar Attack in Austenitic Stainless Steels
4.1 Orders for material to this specification should include
A 450/A 450M Specification for General Requirements for
the following, as required, to describe the desired material
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Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
adequately:
A 941 Terminology Relating to Steel, Stainless Steel, Re-
4.1.1 Quantity (feet, centimetres, or number of lengths),
4.1.2 Name of material (austenitic steel pipe),
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
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A01.10 on Stainless and Alloy Steel Tubular Products. Annual Book of ASTM Standards, Vol 03.01.
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Current edition approved March 10, 2001. Published June 2001. Originally Available from American National Standards Institute, 11 West 42nd St., 13th
published as A 943/A 943M – 95. Last previous edition A 943/A 943M – 00. Floor, New York, NY 10036.
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Annual Book of ASTM Standards, Vol 01.03. Available from Society of Automotive Engineers, 400 Commonwealth Drive,
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Annual Book of ASTM Standards, Vol 01.01. Warrendale, PA 15096.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 943/A 943M – 01
4.1.3 Grade (Table 1), 4.1.7 Optional requirements (S
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