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
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
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)
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
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.
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
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.
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.
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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A943/A943M−01 (2019)
porosity. The metallurgical characteristics of the spray-formed or surface finishing is not mandatory when pipe is bright
productarecontrolledprimarilybythethermalconditionofthe annealed. The purchaser may request that a passivating treat-
spray, and that of the surface of the metallic deposit formed on ment be applied.
the substrate.
6.3 Heat Treatment:
6.3.1 All pipe shall be furnished in the heat-treated condi-
4. Ordering Information
tion. The heat-treatment procedure, except for “H” grades,
4.1 Orders for material to this specification should include
S30815 and S31254, shall consist of heating the pipe to a
the following, as required, to describe the desired material
minimum temperature of 1900°F [1040°C] and quenching in
adequately:
water or rapidly cooling by other means.
4.1.1 Quantity (feet, centimetres, or number of lengths),
6.3.2 All H grades shall be furnished in the solution-treated
4.1.2 Name of material (austenitic steel pipe),
condition. If cold working is involved in processing, the
4.1.3 Grade (Table 1),
minimum solution treating temperature for Grades TP321H,
4.1.4 Size(NPSoroutsidediameterandschedulenumberor
TP347H, and TP348H shall be 2000°F [1100°C] and for
average wall thickness or other),
Grades TP304H, and TP316H, 1900°F [1040°C]. If the H
4.1.5 Length (specific or random) (Section 11),
Grade is furnished in the spray-formed condition only, the
4.1.6 End finish (Section on Ends of Specification A999/
minimum solution treating temperatures for Grades TP321H,
A999M),
TP347H, and TP348H shall be 1925°F [1050°C], and for
4.1.7 Optional requirements (Section 8),
Grades TP304H, and TP316H, 1900°F [1040°C]. The mini-
4.1.8 Test report required (Certification Section of Specifi-
mum solution treating temperature for S30815 shall be 1920°F
cation A999/A999M),
[1050°C]. The minimum solution treating temperature for
4.1.9 Specification number, and
TP309H, TP309HCb, TP310H, and TP310HCb shall be
4.1.10 Special requirements or any supplementary require-
1900°F [1040°C].
ments selected, or both.
6.3.3 The heat-treatment procedure for S31254 shall consist
of heating the pipe to a minimum temperature of 2100°F
5. General Requirements
[1150°C] and quenching in water or rapidly cooling by other
5.1 Material furnished under this specification shall con- means.
form to the applicable requirements of the current edition of
6.3.4 A solution annealing temperature above 1950°F
Specification A999/A999M unless otherwise provided herein. [1065°C] may impair the resistance to intergranular corrosion
after subsequent exposure to sensitizing conditions in
6. Materials and Manufacture
TP309HCb, TP310HCb, TP321, TP321H, TP347, TP347H,
TP348, andTP348H.When specified by the purchaser, a lower
6.1 Melting—Thesteelshallbemadebytheelectric-furnace
temperature stabilization or re-solution anneal shall be used
process or by other similar processes. The primary melting
subsequent to the initial high temperature solution anneal (see
may incorporate separate degassing or refining and may be
Supplementary Requirement S6).
followed by secondary melting, using electroslag remelting or
vacuum-arc remelting. If secondary melting is employed, the
6.4 Grain Size:
heat shall be defined as all of the ingots remelted from a single
6.4.1 The grain size of TP304H, TP316H, TP321H,
primary heat.
TP347H and TP348H, as determined in accordance with Test
6.1.1 If a specified type of melting is required by the
Methods E112, shall be ASTM No. 7 or coarser.
purchaser, it shall be stated on the purchase order.
6.4.2 The grain size of TP309H, TP309HCb, TP310H and
6.1.2 When specified on the purchase order, or when a
TP310HCb, shall be ASTM No. 6 or coarser.
specific type of melting has been specified, the material
manufacturer shall include with the report required by the Heat
7. Chemical Composition
Analysis section of this specification or the Certification
7.1 The steel shall conform to the requirements as to
section of Specification A999/A999M the type of melting used
chemical composition prescribed in Table 1.
to produce the material.
6.2 Pipe Manufacture:
8. Product Analysis
6.2.1 The pipe shall be made by the spray forming process
8.1 At the request of the purchaser, an analysis of two pipes
using the steel from the electric steel process or other similar
from each lot shall be made by the manufacturer.Alot of pipe
processes as in 6.1.
shall consist of the following number of lengths of the same
6.2.2 The pipe shall be made by spraying the melt on to a
size and wall thickness from any one heat of stainless steel:
thin-walled collector tube. The as-spray formed pipe shall be
NPS Designator Lengths of Pipe in Lot
machined on both the inner and outer surfaces. The remaining
metalshallbehomogeneous,sound,andmeettherequirements
Under 2
of Section 11.
2 to 5 200 or fraction thereof
6 and over 100 or fraction thereof
6.2.3 Unless specified by the purchaser, pipe may be fur-
nished as-spray formed or as-spray formed and cold finished. 8.2 The results of these analyses shall be reported to the
6.2.4 All pipe shall be furnished in the descaled condition purchaser or the purchaser’s representative, and shall conform
and be free of contaminating iron particles. Pickling, blasting to the requirements specified in Section 7.
A943/A943M−01 (2019)
TABLE 1 Chemical Requirements
Grade UNS Composition, % Columbium Composition, %
Designa- plus
C
Carbon, Manga-Phospho- Sulfur, Silicon, Nickel Chromium Molyb- Titanium Tantalum, Nitrogen Vanadium Copper Cerium
A
tion B B Tantalum
max nese, rus, max max denum max
B
max max
TP304 S30400 0.08 2.00 0.045 0.030 0.75 8.0–11.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304H S30409 0.04–0.10 2.00 0.045 0.030 0.75 8.0–11.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304L S30403 0.030 2.00 0.045 0.030 0.75 8.0–13.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304N S30451 0.08 2.00 0.045 0.030 0.75 8.0–11.0 18.0–20.0 . . . . . . . . . . . . 0.10–0.16 . . . . . . . . .
TP304LN S30453 0.030 2.00 0.045 0.030 0.75 8.0–11.0 18.0–20.0 . . . . . . . . . . . . 0.10–0.16 . . . . . . . . .
TP309Cb S30940 0.08 2.00 0.045 0.030 0.75 12.0–16.0 22.0–24.0 0.75 max . . . 10 × C . . . . .
min
1.10
max
TP309H S30909 0.04–0.10 2.00 0.045 0.030 0.75 12.0–15.0 22.0–24.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP309HCb S30941 0.04–0.10 2.00 0.045 0.030 0.75 12.0–16.0 22.0–24.0 0.75 max . . . 10 × C . . . . .
min
1.10
max
TP309S S30908 0.08 2.00 0.045 0.030 0.75 12.0–15.0 22.0–24.0 0.75 max . . . . . . . . . . . . . . . . . . . . .
TP310Cb S31040 0.08 2.00 0.045 0.030 0.75 19.0–22.0 24.0–26.0 0.75 max . . . 10 × C . . . . .
min
1.10
max
TP310H S31009 0.04–0.10 2.00 0.045 0.030 0.75 19.0–22.0 24.0–26.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP310HCb S31041 0.04–0.10 2.00 0.045 0.030 0.75 19.0–22.0 24.0–26.0 0.75 max . . . 10 × C . . . . .
min
1.10
max
TP310S S31008 0.08 2.00 0.045 0.030 0.75 19.0–22.0 24.0–26.0 0.75 max . . . . . . . . . . . . . . . . . . . . .
D
. . . S31272 0.08–0.121.50–2.00 0.030 0.015 0.3–0.7 14.0–16.0 14.0–16.0 1.00–1.0 0.3–0.6 . . . . . . . . . . . . . . . . . .
TP316 S31600 0.08 2.00 0.045 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316H S31609 0.04–0.10 2.00 0.045 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316L S31603 0.030 2.00 0.045 0.030 0.75 10.0–15.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316N S31651 0.08 2.00 0.045 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . 0.10–0.16 . . . . . . . . .
TP316LN S31653 0.030 2.00 0.045 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . 0.10–0.16 . . . . . . . . .
TP317 S31700 0.08 2.00 0.045 0.030 0.75 11.0–14.0 18.0–20.0 3.0–4.0 . . . . . . . . . . . . . . . . . . . . .
TP317L S31703 0.030 2.00 0.045 0.030 0.75 11.0–15.0 18.0–20.0 3.0–4.0 . . . . . . . . . . . . . . . . . . . . .
E
TP321 S32100 0.08 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . . . .
F
TP321H S32109 0.04–0.10 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . . . .
G
TP347 S34700 0.08 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . . . . . .
H
TP347H S34709 0.04–0.10 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . . . . . .
G
TP348 S34800 0.08 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . 0.10 . . . .
H
TP348H S34809 0.04–0.10 2.00 0.045 0.030 0.75 9.0–13.0 17.0–19.0 . . . . . . 0.10 . . . .
TPXM-10 S21900 0.08 8.0–10.0 0.045 0.030 1.00 5.5–7.5 19.0–21.5 . . . . . . . . . . . . 0.15–0.40 . . . . . . . . .
TPXM-11 S21903 0.04 8.0–10.0 0.045 0.030 1.00 5.50–7.5 19.0–21.5 . . . . . . . . . . . . 0.15–0.40 . . . . . . . . .
TPXM-15 S38100 0.08 2.00 0.030 0.030 1.50–2.50 17.5–18.5 17.0–19.0 . . . . . . . . . . . . . . . . . . . . . . . .
TPXM-19 S20910 0.06 4.0–6.0 0.045 0.030 1.00 11.5–13.5 20.5–23.5 1.50–3.00 . . . 0.10–0.30 . . . 0.20–0.40 0.10–0.30 . . . . . .
TPXM-29 S24000 0.08 11.5–14.5 0.060 0.030 1.00 2.2–3.7 17.0–19.0 . . . . . . . . . . . . 0.20–0.40 . . . . . . . . .
. . . S31254 0.020 1.00 0.030 0.010 0.80 17.5–18.5 19.5–20.5 6.0–6.5 . . . . . . . . . 0.18–0.22 . . . 0.50–1.00 . . .
. . . S30815 0.05–0.10 0.80 0.040 0.030 1.40–2.00 10.0–12.0 20.0–22.0 . . . . . . . . . . . . 0.14–0.20 . . . . . . 0.03–0.08
. . . S31050 0.030 2.00 0.020 0.015 0.4 20.5–23.5 24.0–26.0 1.0–2.0 . . . . . . . . . 0.09–0.15 . . . . . . . . .
. . . S30600 0.018 2.00 0.02 0.02 3.7–4.3 14.0–15.5 17.0–18.5 0.20 max . . . . . . . . . . . . . . . 0.50 max . . .
. . . S31725 0.030 2.00 0.045 0.030 0.75 13.5–17.5 18.0–20.0 4.0–5.0 . . . . . . . . . 0.10 max . . . 0.75 max . . .
. . . S31726 0.030 2.00 0.045 0.030 0.75 13.5–17.
...
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