ASTM A943/A943M-00

Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes

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 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-Oct-2000
• 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

• Replaced By: ASTM A943/A943M-01 - Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
• Effective Date: 10-Mar-2001
• Referred By: ASTM A999/A999M-23 - Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
• Effective Date: 10-Oct-2000

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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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.
Designation: A 943/A 943M – 00 An American National Standard
Standard Specification for
Spray-Formed Seamless Austenitic Stainless Steel Pipes
This standard is issued under the fixed designation A 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.
1. Scope E 112 Test Methods for Determining the Average Grain
Size
1.1 This specification covers spray-formed seamless auste-
E 381 Method of Macroetch Testing Steel Bars, Billets,
nitic stainless steel pipe intended for high-temperature and
Blooms, and Forgings
general corrosive service.
E 527 Practice for Numbering Metals and Alloys (UNS)
1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
2.2 ANSI/ASME Standards:
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
B1.20.1 Pipe Threads, General Purpose
modifications of Grades TP304, TP309Cb, TP309S, TP310Cb,
B36.10 Welded and Seamless Wrought Steel Pipe
TP310S, TP316, TP321, TP347, and TP348, and are intended
B36.19 Stainless Steel Pipe
for high-temperature service.
2.3 Other Standard:
1.3 Optional supplementary requirements are provided for
SAE J1086 Practice for Numbering Metals and Alloys
pipe where a greater degree of testing is desired. These
(UNS)
supplementary requirements call for additional tests to be made
and, when desired, one or more of these may be specified in the
3. Ordering Information
order.
3.1 Orders for material to this specification should include
1.4 Appendix X1 lists the dimensions of seamless stainless
the following, as required, to describe the desired material
steel pipe as shown in ANSI B36.19. Pipe having other
adequately:
dimensions may be furnished provided such pipe complies
3.1.1 Quantity (feet, centimetres, or number of lengths),
with all other requirements of this specification.
3.1.2 Name of material (austenitic steel pipe),
1.5 The values stated in either inch-pound units or SI units
3.1.3 Grade (Table 1),
are to be regarded separately as standard. Within the text, the
3.1.4 Size (NPS or outside diameter and schedule number or
SI units are shown in brackets. The values stated in each
average wall thickness or other),
system are not exact equivalents; therefore, each system must
3.1.5 Length (specific or random) (Section 10),
be used independently of the other. Combining values from the
3.1.6 End finish (Section on Ends of Specification A 999/
two systems may result in nonconformance with the specifi-
A 999M),
cation. The inch-pound units shall apply unless the “M”
3.1.7 Optional requirements (Section 7),
designation of this specification is specified in the order.
3.1.8 Test report required (Certification Section of Specifi-
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
cation A 999/A 999M),
been substituted in this standard for such traditional terms as “nominal
3.1.9 Specification number, and
diameter,” “size,” and “nominal size.”
3.1.10 Special requirements or any supplementary require-
ments selected, or both.
2. Referenced Documents
2.1 ASTM Standards:
4. General Requirements
A 262 Practices for Detecting Susceptibility to Intergranu-
4.1 Material furnished under this specification shall con-
lar Attack in Austenitic Stainless Steels
form to the applicable requirements of the current edition of
A 450/A 450M Specification for General Requirements for
Specification A 999/A 999M unless otherwise provided herein.
Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
A 999/A 999M Specification for General Requirements for
5. Materials and Manufacture
Alloy and Stainless Steel Pipe
5.1 Melting—The steel shall be made by the electric-
furnace process or by other similar processes. The primary
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.10 on Stainless and Alloy Steel Tubular Products. Annual Book of ASTM Standards, Vol 03.01.
Current edition approved Oct. 10, 2000. Published January 2001. Originally Available from American National Standards Institute, 11 West 42nd St., 13th
e1
published as A 943/A 943M – 95. Last previous edition A 943/A 943M – 95 . Floor, New York, NY 10036.
2 6
Annual Book of ASTM Standards, Vol 01.03. Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Annual Book of ASTM Standards, Vol 01.01. Warrendale, PA 15096.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
A 943/A 943M
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 Tantalum
B B
max nese, rus, max max denum max
B
max max
TP304 S30400 0.08 2.00 0.040 0.030 0.75 8.00–11.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304H S30409 0.04–0.10 2.00 0.040 0.030 0.75 8.00–11.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304L S30403 0.030 2.00 0.040 0.030 0.75 8.00–13.0 18.0–20.0 . . . . . . . . . . . . . . . . . . . . . . . .
TP304N S30451 0.08 2.00 0.040 0.030 0.75 8.00–11.0 18.0–20.0 . . . . . . . . . . . . 0.10–0.16 . . . . . . . . .
TP304LN S30453 0.030 2.00 0.040 0.030 0.75 8.00–11.0 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 3 C . . . . .
min
1.10
max
TP309H S30909 0.04–0.10 2.00 0.040 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 3 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 3 C . . . . .
min
1.10
max
TP310H S31009 0.04–0.10 2.00 0.040 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 3 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 0.08–0.12 1.5–2.00 0.030 0.015 0.3–0.7 14.0–16.0 14.0–16.0 1.0–14.0 0.3–0.6 . . . . . . . . . . . . . . . . . .
TP316 S31600 0.08 2.00 0.040 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316H S31609 0.04–0.10 2.00 0.040 0.030 0.75 11.0–14.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316L S31603 0.030 2.00 0.040 0.030 0.75 10.0–15.0 16.0–18.0 2.00–3.00 . . . . . . . . . . . . . . . . . . . . .
TP316N S31651 0.08 2.00 0.040 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 0.040 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 0.040 0.030 0.75 11.0–14.0 18.0–20.0 3.00–4.00 . . . . . . . . . . . . . . . . . . . . .
TP317L S31703 0.030 2.00 0.040 0.030 0.75 11.0–15.0 18.0–20.0 3.00–4.00 . . . . . . . . . . . . . . . . . . . . .
E
TP321 S32100 0.08 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . . . .
F
TP321H S32109 0.04–0.10 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . . . .
G
TP347 S34700 0.08 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . . . . . .
H
TP347H S34709 0.04–0.10 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . . . . . .
G
TP348 S34800 0.08 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . 0.10 . . . . . . . . . . . .
H
TP348H S34809 0.04–0.10 2.00 0.040 0.030 0.75 9.00–13.0 17.0–20.0 . . . . . . 0.10 . . . . . . . . . . . .
TPXM-10 S21900 0.08 8.00–10.00 0.040 0.030 1.00 5.50–7.50 19.0–21.5 . . . . . . . . . . . . 0.15–0.40 . . . . . . . . .
TPXM-11 S21903 0.04 8.00–10.00 0.040 0.030 1.00 5.50–7.50 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 0.060 4.00–6.00 0.040 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 0.080 11.5–14.5 0.060 0.030 1.00 2.25–3.75 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 6.00–6.50 . . . . . . . . . 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 0.25 2.00 0.020 0.015 0.4 20.5–23.5 24.0–26.0 1.6–2.6 . . . . . . . . . 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 0.03 2.00 0.040 0.030 0.75 13.5–17.5 18.0–20.0 4.0–5.0 . . . . . . . . . 0.10 max . . . 0.75 max . . .
. . . S31726 0.03 2.00 0.040 0.030 0.75 13.5–17.5 17.0–20.0 4.0–5.0 . . . . . . . . . 0.10–0.20 . . . 0.75 max . . .
. . . S32615 0.07 2.00 0.045 0.030 4.8–6.0 19.0–22.0 16.5–19.5 0.3–1.5 . . . . . . . . . . . . . . . 1.5–2.5 . . .
. . . S34565 0.03 5.0–7.0 0.030 0.010 1.00 16.0–18.0 23.0–25.0 4.0–5.0 . . . 0.1 max . . . 0.4–0.6 . . . . . . . . .
A
New designation established in accordance with Practice E 527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS).
B
Maximum, unless otherwise indicated.
C
The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.
D
The boron content shall be in the range 0.004–0.008.
E
The titanium content shall be not less than five times the carbon content and not more than 0.70 %.
F
The titanium content shall be not less than four times the carbon content and not more than 0.60 %.
G
The columbium (niobium) plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 %.
H
The columbium (niobium) plus tantalum content shall be not less than eight times the carbon content and not more than 1.0 %.
melting may incorporate separate degassing or refining and 5.1.2 When specified on the purchase order, or when a
may be followed by secondary melting, using electroslag specific type of melting has been specified, the material
remelting or vacuum-arc remelting. If secondary melting is manufacturer shall include with the report required by the Heat
employed, the heat shall be defined as all of the ingots remelted Analysis section of this specification or the Certification
from a single primary heat. section of Specification A 999/A 999M the type of melting
5.1.1 If a specified type of melting is required by the used to produce the material.
purchaser, it shall be stated on the purchase order. 5.2 Pipe Manufacture:
A 943/A 943M
5.2.1 The pipe shall be made by the spray forming process from each lot shall be made by the manufacturer. A lot of pipe
using the steel from the electric steel process or other similar shall consist of the following number of lengths of the same
processes as in 5.1.
size and wall thickness from any one heat of stainless steel:
5.2.2 The pipe shall be made by spraying the melt on to a
NPS Designator Lengths of Pipe in Lot
thin-walled collector tube. The as-spray formed pipe shall be
Under 2
machined on both the inner and outer surfaces. The remaining
2 to 5 200 or fraction thereof
metal shall be homogeneous, sound, and meet the requirements
6 and over 100 or fraction thereof
of Section 10.
7.2 The results of these analyses shall be reported to the
5.2.3 Unless specified by the purchaser, pipe may be fur-
purchaser or the purchaser’s representative, and shall conform
nished as-spray formed or as-spray formed and cold finished.
to the requirements specified in Section 6.
5.2.4 All pipe shall be furnished in the descaled condition
7.3 If the analysis of one of the tests specified in 7.1 does
and be free of contaminating iron particles. Pickling, blasting
not conform to the requirements specified in Section 6, an
or surface finishing is not mandatory when pipe is bright
analysis of each pipe from the same heat or lot may be made,
annealed. The purchaser may request that a passivating treat-
and all pipes conforming to the requirements shall be accepted.
ment be applied.
5.3 Heat Treatment:
8. Tensile Requirements
5.3.1 All pipe shall be furnished in the heat-treated condi-
tion. The heat-treatment procedure, except for “H” grades,
8.1 The tensile properties of the material shall conform to
S30815 and S31254, shall consist of heating the pipe to a
the requirements prescribed in Table 2.
minimum temperature of 1900°F [1040°C] and quenching in
water or rapidly cooling by other means.
9. Mechanical Tests and Grain Size Determinations
5.3.2 All H grades shall be furnished in the solution-treated
Required
condition. If cold working is involved in processing, the
9.1 Transverse or Longitudinal Tension Test—One tension
minimum solution treating temperature for Grades TP321H,
test shall be made on a specimen for lots of not more than 100
TP347H, and TP348H shall be 2000°F [1100°C] and for
pipes. Tension tests shall be made on specimens from two tubes
Grades TP304H, and TP316H, 1900°F [1040°C]. If the H
for lots of more than 100 pipes.
Grade is furnished in the spray-formed condition only, the
minimum solution treating temperatures for Grades TP321H,
NOTE 2—The term “lot,” for mechanical tests, applies to all pipe of the
TP347H, and TP348H shall be 1925°F [1050°C], and for
same diameter and wall thickness (or schedule) that are produced from the
Grades TP304H, and TP316H, 1900°F [1040°C]. The mini-
same heat of steel and subjected to the same finishing treatment: (1)ina
mum solution treating temperature for S30815 shall be 1920°F continuous heat treatment furnace, or ( 2) in a batch-type heat treatment
furnace, equipped with recording pyrometers and automatically controlled
[1050°C]. The minimum solution treating temperature for
within a 50°F [30°C] range, the larger of: (a) each 200 ft [60°C] or
TP309H, TP309HCb, TP310H, and TP310HCb shall be
fraction thereof or (b) that pipe heat treated in the same batch furnace
1900°F [1040°C].
charge.
5.3.3 The heat-treatment procedure for S31254 shall consist
of heating the pipe to a minimum temperature of 2100°F 9.2 Flattening Test—For material heat treated in a batch-
typed furnace, flattening tests shall be made on 5 % of the pipe
[1150°C] and quenching in water or rapidly cooling by other
means. from e
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