Used in USDOE-NE standards

Designation: A213/A213M – 09a

Standard Specification for

Seamless Ferritic and Austenitic Alloy-Steel Boiler,
Superheater, and Heat-Exchanger Tubes1
This standard is issued under the fixed designation A213/A213M; 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.
This standard has been approved for use by agencies of the Department of Defense.

1. Scope* Attack in Austenitic Stainless Steels

1.1 This specification2 covers seamless ferritic and austen- A941 Terminology Relating to Steel, Stainless Steel, Re-
itic steel boiler, superheater, and heat-exchanger tubes, desig- lated Alloys, and Ferroalloys
nated Grades T5, TP304, etc. These steels are listed in Tables A1016/A1016M Specification for General Requirements
1 and 2. for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain-
1.2 Grades containing the letter, H, in their designation, less Steel Tubes
have requirements different from those of similar grades not E112 Test Methods for Determining Average Grain Size
containing the letter, H. These different requirements provide 3. Terminology
higher creep-rupture strength than normally achievable in
similar grades without these different requirements. 3.1 Definitions—For definitions of terms used in this speci-
1.3 The tubing sizes and thicknesses usually furnished to fication, refer to Terminology A941.
this specification are 1⁄8 in. [3.2 mm] in inside diameter to 5 in. 4. Ordering Information
[127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to
12.7 mm], inclusive, in minimum wall thickness or, if specified 4.1 It shall be the responsibility of the purchaser to specify
in the order, average wall thickness. Tubing having other all requirements that are necessary for products under this
diameters may be furnished, provided such tubes comply with specification. Such requirements to be considered include, but
all other requirements of this specification. are not limited to, the following:
1.4 The values stated in either SI units or inch-pound units 4.1.1 Quantity (feet, metres, or number of lengths),
are to be regarded separately as standard. Within the text, the 4.1.2 Name of material (seamless tubes),
SI units are shown in brackets. The values stated in each 4.1.3 Grade (Tables 1 and 2),
system may not be exact equivalents; therefore, each system 4.1.4 Condition (hot finished or cold finished),
shall be used independently of the other. Combining values 4.1.5 Controlled structural characteristics (see 6.3),
from the two systems may result in non-conformance with the 4.1.6 Size (outside diameter and minimum wall thickness,
standard. The inch-pound units shall apply unless the “M” unless average wall thickness is specified),
designation of this specification is specified in the order. 4.1.7 Length (specific or random),
4.1.8 Hydrostatic Test or Nondestructive Electric Test (see
2. Referenced Documents 10.1),
2.1 ASTM Standards:3 4.1.9 Specification designation and year of issue,
A262 Practices for Detecting Susceptibility to Intergranular 4.1.10 Increased sulfur (for machinability, see Note B, Table
1, and 15.3), and
4.1.11 Special requirements and any supplementary require-
1
ments selected.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5. General Requirements
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved April 1, 2009. Published April 2009. Originally 5.1 Product furnished to this specification shall conform to
approved in 1939. Last previous edition approved in 2009 as A213/A213M – 09. the requirements of Specification A1016/A1016M, including
DOI: 10.1520/A0213_A0213M-09A.
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- any supplementary requirements that are indicated in the
cation SA-213 in Section II of that Code. purchase order. Failure to comply with the general require-
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or ments of Specification A1016/A1016M constitutes nonconfor-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mance with this specification. In case of conflict between the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.

*A Summary of Changes section appears at the end of this standard.

Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.

1
 TABLE 1 Chemical Composition Limits, %A, for Low Alloy Steel
UNS
Grade Composition, %
Designation
Carbon Manga- Phospho- Sul- Silicon Nickel Chromium Molybdenum Vana- Boron Niobium Nitrogen Aluminum Tungsten Other
nese rus fur dium Elements
T2 K11547 0.10–0.20 0.30–0.61 0.025 0.025B 0.10–0.30 ... 0.50–0.81 0.44–0.65 ... ... ... ... ... ... ...
T5 K41545 0.15 0.30–0.60 0.025 0.025 0.50 ... 4.00–6.00 0.45–0.65 ... ... ... ... ... ... ...
T5b K51545 0.15 0.30–0.60 0.025 0.025 1.00–2.00 ... 4.00–6.00 0.45–0.65 ... ... ... ... ... ... ...
T5c K41245 0.12 0.30–0.60 0.025 0.025 0.50 ... 4.00–6.00 0.45–0.65 ... ... ... ... ... ... Ti
4xC–0.70
T9 K90941 0.15 0.30–0.60 0.025 0.025 0.25–1.00 ... 8.00–10.00 0.90–1.10 ... ... ... ... ... ... ...
T11 K11597 0.05–0.15 0.30–0.60 0.025 0.025 0.50–1.00 ... 1.00–1.50 0.44–0.65 ... ... ... ... ... ... ...
T12 K11562 0.05–0.15 0.30–0.61 0.025 0.025B 0.50 ... 0.80–1.25 0.44–0.65 ... ... ... ... ... ... ...
T17 K12047 0.15–0.25 0.30–0.61 0.025 0.025 0.15–0.35 ... 0.80–1.25 ... 0.15 ... ... ... ... ... ...
T21 K31545 0.05–0.15 0.30–0.60 0.025 0.025 0.50–1.00 ... 2.65–3.35 0.80–1.06 ... ... ... ... ... ... ...
T22 K21590 0.05–0.15 0.30–0.60 0.025 0.025 0.50 ... 1.90–2.60 0.87–1.13 ... ... ... ... ... ... ...
T23 K40712 0.04–0.10 0.10–0.60 0.030 0.010 0.50 ... 1.90–2.60 0.05–0.30 0.20–0.30 0.0005– 0.02–0.08 0.03 0.030 1.45–1.75 ...
0.006
T24 K30736 0.05–0.10 0.30–0.70 0.020 0.010 0.15–0.45 ... 2.20–2.60 0.90–1.10 0.20–0.30 0.0015– ... 0.012 0.02 ... Ti
0.007 0.06–0.10
T36 K21001 0.10–0.17 0.80–1.20 0.030 0.025 0.25–0.50 1.00–1.30 0.30 0.25–0.50 0.02 ... 0.015–0.045 0.02 0.050 ... Cu
0.50–0.80
T91 K90901 0.07–0.14 0.30–0.60 0.020 0.010 0.20–0.50 0.40 8.0–9.5 0.85–1.05 0.18–0.25 ... 0.06–0.10 0.030– 0.02 ... Ti 0.01
0.070 Zr 0.01
T92 K92460 0.07–0.13 0.30–0.60 0.020 0.010 0.50 0.40 8.5–9.5 0.30–0.60 0.15–0.25 0.001– 0.04–0.09 0.030– 0.02 1.5–2.00 Ti 0.01
0.006 0.070 Zr 0.01

A213/A213M – 09a
T122 K91271 0.07–0.14 0.70 0.020 0.010 0.50 0.50 10.0–11.5 0.25–0.60 0.15–0.30 0.0005– 0.04–0.10 0.040– 0.02 1.50–2.50 Cu
0.005 0.100 0.30–1.70
Ti 0.01
2

Zr 0.01
T911 K91061 0.09–0.13 0.30–0.60 0.020 0.010 0.10–0.50 0.40 8.5–9.5 0.90–1.10 0.18–0.25 0.0003– 0.06–0.10 0.040– 0.02 0.90–1.10 Ti 0.01
0.006 0.090 Zr 0.01
A
Maximum, unless range or minimum is indicated. Where ellipses (...) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
B
It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 15.3.
 A213/A213M – 09a
requirements of this specification and Specification A1016/ 6.2.2 Austenitic Stainless Steels—All austenitic tubes shall
A1016M, this specification shall prevail. be furnished in the heat-treated condition, and shall be heat
treated in accordance with the requirements of Table 3. Alter-
6. Materials and Manufacture natively, immediately after hot forming, while the temperature
6.1 Manufacture and Condition—Tubes shall be made by of the tubes is not less than the minimum solution treatment
the seamless process and shall be either hot finished or cold temperature specified in Table 3, tubes may be individually
finished, as specified. Grade TP347HFG shall be cold finished. quenched in water or rapidly cooled by other means (direct
6.2 Heat Treatment: quenched).
6.2.1 Ferritic Alloy and Ferritic Stainless Steels—The fer-
6.3 If any controlled structural characteristics are required,
ritic alloy and ferritic stainless steels shall be reheated for heat
treatment in accordance with the requirements of Table 3. Heat these shall be so specified in the order as to be a guide as to the
treatment shall be carried out separately and in addition to most suitable heat treatment.
heating for hot forming.

3
 TABLE 2 Chemical Composition Limits, %A, for Austenitic and Ferritic Stainless Steel

UNS Composition
Grade Designation
Manga- Phospho- Other
Carbon Sulfur Silicon Chromium Nickel Molybdenum NitrogenB Niobium Titanium
nese rus Elements

TP201 S20100 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 ... 0.25 ... ... ...
TP202 S20200 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–6.0 ... .025 ... ... ...
XM-19 S20910 0.06 4.0–6.0 0.045 0.030 1.00 20.5–23.5 11.5–13.5 1.50–3.00 0.20–0.40 0.10–0.30 ... V 0.10–0.30
C
S21500 0.06–0.15 5.5–7.0 0.045 0.030 0.20–1.00 14.0–16.0 9.0–11.0 0.80–1.20 ... 0.75–1.25 ... B 0.003–
0.009,
V 0.15–0.40
C
S25700 0.02 2.00 0.025 0.010 6.5–8.0 8.0–11.5 22.0–25.0 0.50 ... ... ... ...
TP304 S30400 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... ... ... ... ...
TP304L S30403 0.035D 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 ... ... ... ... ...
TP304H S30409 0.04–0.10 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... ... ... ... ...
C
S30432 0.07–0.13 1.00 0.040 0.010 0.30 17.0–19.0 7.5–10.5 ... 0.05–0.12 0.30–0.60 ... Al 0.003–
0.030,
B 0.001–
0.010,
Cu 2.5–3.5
C
S30434 0.07–0.14 2.00 0.040 0.010 1.00 17.5–19.5 9.0–12.0 ... ... 0.10–0.40E 0.10–0.25E B 0.001–
0.004
Cu 2.50–

A213/A213M – 09a
3.50
TP304N S30451 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... 0.10–0.16 ... ... ...
TP304LN S30453 0.035D 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... 0.10–0.16 ... ... ...
C
S30615 0.016–0.24 2.00 0.030 0.030 3.2–4.0 17.0–19.5 13.5–16.0 ... ... ... ... Al 0.8–1.5
4

C
S30815 0.05–0.10 0.80 0.040 0.030 1.40–2.00 20.0–22.0 10.0–12.0 ... 0.14–0.20 ... ... Ce 0.03–0.08
TP309S S30908 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 ... ... ... ... ...
TP309H S30909 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 ... ... ... ... ...
TP309LMoN S30925 0.025 2.00 0.040 0.030 0.70 23.0–26.0 13.0–16.0 0.5–1.2 0.25–0.40 ... ... ...
TP309Cb S30940 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 ... ... 10xC–1.10 ... ...
TP309HCb S30941 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 ... ... 10xC-1.10 ... ...
... S30942 0.03–0.10 2.00 0.040 0.030 1.00 21.0–23.0 14.5–16.5 0.10–0.20 0.50–0.80 B=0.001–0.005
C
S31002 0.02 2.00 0.020 0.015 0.15 24.0–26.0 19.0–22.0 0.10 0.10 ... ... ...
TP310S S31008 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... ... ... ...
TP310H S31009 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... ... ... ...
TP310MoCbN S31025 0.10 1.50 0.030 0.030 1.00 19.5–23.0 23.0–26.0 1.0–2.0 0.10–0.25 0.10–0.40 0.20 B 0.002–
0.010
S31035 0.04–0.10 0.60 0.030 0.015 0.40 21.5–23.5 23.5–26.5 ... 0.15–0.30 0.30–0.60 ... W 2.0–4.0
Co 1.0–2.0
Cu 2.0–3.5
B 0.002–
0.008
TP310Cb S31040 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... 10xC-1.10 ... ...
TP310HCb S31041 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... 10xC-1.10 ... ...
TP310HCbN S31042 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... 0.15–0.35 0.20–0.60 ... ...
TP310MoLN S31050 0.025 2.00 0.020 0.030 0.40 24.0–26.0 21.0–23.0 2.00–3.00 0.10–0.16 ... ... ...
C
S31060 0.05–0.10 1.00 0.040 0.030 0.50 22.0–24.0 10.0–12.5 ... 0.18–0.25 ... ... Ce + La
0.025–0.070
B 0.001–0.010
C
S31254 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 6.0–6.5 0.18–.022 ... ... Cu 0.50–1.00
C
S31272 0.08–0.12 1.50–2.00 0.030 0.015 0.30–0.70 14.0–16.0 14.0–16.0 1.00–1.40 ... ... 0.30–0.60 B 0.004–
0.008
C
S31277 0.020 3.00 0.030 0.010 0.50 20.5–23.0 26.0–28.0 6.5–8.0 0.30–0.40 ... ... Cu 0.50–1.50
TP316 S31600 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 ... ... ... ...
 TABLE 2 Continued
UNS Composition
Grade Designation
Manga- Phospho- Other
Carbon Sulfur Silicon Chromium Nickel Molybdenum NitrogenB Niobium Titanium
nese rus Elements

TP316L S31603 0.035D 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 ... ... ... ...
TP316H S31609 0.04–0.10 2.00 0.045 0.030 1.00 16.0–18.0 11.0–14.0 2.00–3.00 ... ... ... ...
TP316Ti S31635 0.08 2.00 0.045 0.030 0.75 16.0–18.0 10.0–14.0 2.00–3.00 0.10 ... 5X ...
(C + N)–
0.70
TP316N S31651 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.10–0.16 ... ... ...
TP316LN S31653 0.035D 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.10–0.16 ... ... ...
TP317 S31700 0.08 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 ... ... ... ...
TP317L S31703 0.035 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 ... ... ... ...
TP317LM S31725 0.03 2.00 0.045 0.030 1.00 18.0–20.0 13.5–17.5 4.0–5.0 0.20 ... ... Cu 0.75
TP317LMN S31726 0.03 2.00 0.045 0.030 1.00 17.0–20.0 13.5–17.5 4.0–5.0 0.10–0.20 ... ... Cu 0.75
C
S32050 0.030 1.50 0.035 0.020 1.00 22.0–24.0 20.0–23.0 6.0–6.8 0.21–0.32 ... ... Cu 0.40
TP321 S32100 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... ... 5(C + N)– ...
0.70
TP321H S32109 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... ... 4(C + N)– ...
0.70
C
S32615 0.07 2.00 0.045 0.030 4.8–6.0 16.5–19.5 19.0–22.0 0.30–1.50 ... ... ... Cu 1.50–
2.50

A213/A213M – 09a
C
S33228 0.04–0.08 1.00 0.020 0.015 0.30 26.0–28.0 31.0–33.0 ... ... 0.60–1.00 ... Ce 0.05–
0.10,
Al 0.025
C
S34565 0.030 5.0–7.0 0.030 0.010 1.00 23.0–25.0 16.0–18.0 4.0–5.0 0.40–0.60 0.10 ... ...
5

TP347 S34700 0.08 2.00 0.045 0.030 1.00 17.0–20.0 9.0–13.0 ... ... 10xC–1.10 ... ...
TP347W S34705 0.05 2.00 0.040 0.030 1.00 17.0–20.0 8.00–11.0 ... 0.10–0.25 0.25–0.50 ... V 0.20–0.50
W 1.50–2.60
TP347H S34709 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... 8xC–1.10 ... ...
TP347HFG S34710 0.06–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... 8xC–1.10 ... ...
TP347LN S34751 0.005–0.020 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... 0.06–0.10 0.20–0.50F ... ...
G
TP348 S34800 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... ... Co 0.20, Ta
0.10
H
TP348H S34809 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... ... Co 0.20, Ta
0.10
... S35045 0.06–0.10 1.50 0.045 0.015 1.00 25.0–29.0 32.0–37.0 ... ... ... 0.15–0.60 Al 0.15–0.60
Cu 0.75
XM-15 S38100 0.08 2.00 0.030 0.030 1.50–2.50 17.0–19.0 17.5–18.5 ... ... ... ... ...
... S38815 0.030 2.00 0.040 0.020 5.5–6.5 13.0–15.0 15.0–17.0 0.75–1.50 ... ... ... Cu 0.75–1.50
Al 0.30
... N08925 0.020 1.00 0.045 0.030 0.50 19.0–21.0 24.0–26.0 6.0–7.0 0.10–0.20 ... ... Cu 0.80–1.50
... N08926 0.020 2.00 0.030 0.010 0.50 19.0–21.0 24.0–26.0 6.0–7.0 0.15–0.25 ... ... Cu 0.50–1.50
I J
TP444 S44400 0.03 1.00 0.040 0.030 1.00 17.5–19.5 1.75–2.50 0.035 ... ...
A
Maximum, unless a range or minimum is indicated. Where ellipses (...) appear in this table, there is no minimum and analysis for the element need not be determined or reported.
B
The method of analysis for Nitrogen shall be a matter of agreement between the purchaser and the producer.
C
For these alloys, there is no common grade designation. The UNS number uniquely identifies these alloys.
D
For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040% is necessary in Grades TP304L, TP304LN, TP316L, and TP316LN.
E
Grade S30434 shall have (Ti + 1⁄2 Nb) of not less than 2 times and not more than 4 times the carbon content.
F
Grade TP347LN shall have an Nb content of not less than 15 times the carbon content.
G
Grade TP348 shall have an Nb + Ta content of not less than 10 times the carbon content and not more than 1.10%.
H
Grade TP348H shall have an Nb + Ta content of not less than 8 times the carbon content and not more than 1.10%.
I
Grade TP444 shall have Ni + Cu = 1.00 max.
J
Grade TP444 shall have Ti + Nb = 0.20 + 4(C + N)–0.80.
 A213/A213M – 09a
7. Chemical Composition 9.5 Mechanical property requirements do not apply to
7.1 Composition Requirements: tubing smaller than 1⁄8 in. [3.2 mm] in inside diameter or
7.1.1 The alloy steels shall conform to the chemical require- thinner than 0.015 in. [0.4 mm] in thickness.
ments given in Table 1. 10. Hydrostatic or Nondestructive Electric Test
7.1.2 The stainless steels shall conform to the chemical
requirements given in Table 2. 10.1 Each tube shall be subjected to the nondestructive
7.2 Product Analysis: electric test or the hydrostatic test. The type of test to be used
7.2.1 An analysis of either one billet or one tube shall be shall be at the option of the manufacturer, unless otherwise
made from each heat. The chemical composition thus deter- specified in the purchase order.
mined shall conform to the requirements specified. 11. Forming Operations
7.2.2 If the original test for product analysis fails, retests of
11.1 Tubes, when inserted in a boiler or tube sheet, shall
two additional billets or tubes shall be made. Both retests, for
stand expanding and beading without showing cracks or flaws.
the elements in question, shall meet the requirements of the
Superheater tubes when properly manipulated shall stand all
specification; otherwise all remaining material in the heat shall
forging, welding, and bending operations necessary for appli-
be rejected or, at the option of the producer, each billet or tube
cation without developing defects. See Note 1.
may be individually tested for acceptance. Billets or tubes that
do not meet the requirements of the specification shall be NOTE 1—Certain of the ferritic steels covered by this specification will
rejected. harden if cooled rapidly from above their critical temperature. Some will
air harden, that is, become hardened to an undesirable degree when cooled
8. Grain Size in air from high temperatures, particularly chromium-containing steels
with chromium of 4 % and higher. Therefore, operations that involve
8.1 Grain size shall be as given in Table 3, as determined in heating such steels above their critical temperatures, such as welding,
accordance with Test Methods E112. flanging, and hot bending, should be followed by suitable heat treatment.
8.2 Grain size determinations, to demonstrate compliance
with 8.1, shall be made on one end of one finished tube from 12. Permissible Variations from the Specified Wall
each lot. See 14.1. Thickness
12.1 Permissible variations from the specified minimum
9. Mechanical Properties wall thickness shall be in accordance with Specification
9.1 Tensile Requirements: A1016/A1016M.
9.1.1 The material shall conform to the requirements as to 12.2 Permissible variations from the specified average wall
tensile properties given in Table 4. thickness shall be 6 10 % of the specified average wall
9.1.2 Table 5 gives the computed minimum elongation thickness for cold formed tubes and, unless otherwise specified
values for each 1⁄32-in. [0.8-mm] decrease in wall thickness. by the purchaser, shall be in accordance with Table 6 for hot
Where the wall thickness lies between two values shown in formed tubes.
Table 5, the minimum elongation value shall be determined by
13. Surface Condition
the following equations. For Grades T23, T24, T91, T92, T122,
T911, and S44400: E = 32t + 10.00 [E = 1.25t + 10.00]. For 13.1 Ferritic alloy cold-finished steel tubes shall be free of
Grade T36: E = 32t + 5.0 [E = 1.25t + 5.0]. For all other ferritic scale and suitable for inspection. A slight amount of oxidation
alloy grades: E = 48t + 15.00 [ E = 1.87t + 15.00]. is not considered scale.
13.2 Ferritic alloy hot-finished steel tubes shall be free of
where: loose scale and suitable for inspection.
E = elongation in 2 in. [50 mm], %, and 13.3 Stainless steel tubes shall be pickled free of scale.
t = actual thickness of specimen, in. [mm]. When bright annealing is used, pickling is not necessary.
9.1.3 One tension test shall be made on a specimen from one 13.4 Any special finish requirement shall be subject to
tube for lots of not more than 50 tubes. Tension tests shall be agreement between the supplier and the purchaser.
made on specimens from two tubes for lots of more than 50
tubes. See 14.2. 14. Sampling
9.2 Hardness Requirements: 14.1 For flattening, flaring, and grain size requirements, the
9.2.1 The material shall conform to the hardness require- term lot applies to all tubes, prior to cutting, of the same size
ments given in Table 4. See 14.2. (see 4.1.6) that are produced from the same heat of steel. When
9.2.2 Brinell, Vickers, or Rockwell hardness tests shall be final heat treatment is in a batch-type furnace, a lot shall
made on specimens from two tubes from each lot. See 14.2. include only those tubes of the same size and from the same
9.3 Flattening Test—One flattening test shall be made on heat that are heat treated in the same furnace charge. When the
specimens from each end of one finished tube, not the one used final heat treatment is in a continuous furnace or when the
for the flaring test, from each lot. See 14.1. heat-treated condition is obtained directly by quenching after
9.4 Flaring Test—One flaring test shall be made on speci- hot forming, the number of tubes of the same size and from the
mens from each end of one finished tube, not the one used for same heat in a lot shall be determined from the size of the tubes
the flattening test, from each lot. See 14.1. as prescribed in Table 7.

6
 A213/A213M – 09a

TABLE 3 Heat Treatment and Grain Size RequirementsA

Austenitizing/ Subcritical Annealing

UNS Solutioning or Tempering ASTM
Grade Heat Treat Type Cooling Media
Number Temperature, Temperature, Grain Size No.B
min or range °F [°C] min or range °F [°C]
Ferritic Alloy Steels
T2 K11547 full or isothermal anneal … … … …
normalize and temper … … … …
subcritical anneal … … 1200 to 1350 …
[650 to 730]
T5 K41545 full or isothermal anneal … … … …
normalize and temper … … 1250 [675] …
T5b K51545 full or isothermal anneal … … … …
normalize and temper … … 1250 [675] …
T5c K41245 subcritical anneal … air or furnace 1350 [730]C …
T9 S50400 full or isothermal anneal … … … …
normalize and temper … … 1250 [675] …
T11 K11597 full or isothermal anneal … … … …
normalize and temper … … 1200 [650] …
T12 K11562 full or isothermal anneal … … … …
normalize and temper … … … …
subcritical anneal … … 1200 to 1350 …
[650 to 730]
T17 K12047 full or isothermal anneal … … … …
normalize and temper … … 1200 [650] …
T21 K31545 full or isothermal anneal … … … …
normalize and temper … … 1250 [675] …
T22 K21590 full or isothermal anneal … … … …
normalize and temper … … 1250 [675] …
T23 K40712 normalize and temper 1900–1975 … 1350–1470 [730–800] …
[1040–1080]
T24 K30736 normalize and tempher 1800–1975 … 1350–1470 [730–800] …
[980–1080]
D
T36 K21001 normalize and temper 1650 [900] 1100 [595] …
T91 K90901 normalize and temper 1900–1975 … 1350–1470 [730–800] …
[1040–1080]
T92 K92460 normalize and temper 1900–1975 … 1350–1470 [730–800] …
[1040–1080]
T122 K91261 normalize and temper 1900–1975 … 1350–1470 [730–800] …
[1040–1080]
E
T911 K91061 normalize and temper 1900–1975 1365–1435 …
[1040–1080] [740–780]
Austenitic Stainless Steels
TP201 S20100 solution treatment 1900 [1040]F water or other rapid cool … …
TP202 S20200 solution treatment 1900 [1040]F water or other rapid cool … …
XM-19 S20910 solution treatment 1900 [1040]F water or other rapid cool … …
… S21500 solution treatment 1900 [1040]F,G water or other rapid cool … …
… S25700 solution treatment 1900 [1040]F water or other rapid cool … …
… S30150 solution treatment 1900 [1040]F water or other rapid cool … …
TP304 S30400 solution treatment 1900 [1040]F water or other rapid cool … …
TP304L S30403 solution treatment 1900 [1040]F water or other rapid cool … …
TP304H S30409 solution treatment 1900 [1040] water or other rapid cool … 7
… S30432 solution treatment 2000 [1100]F water or other rapid cool … …
… S30434 solution treatment 2120 [1160] water or other rapid cool … …
TP304N S30451 solution treatment 1900 [1040]F water or other rapid cool … …
TP304LN S30453 solution treatment 1900 [1040]F water or other rapid cool … …
… S30615 solution treatment 1900 [1040]F water or other rapid cool … …
… S30815 solution treatment 1920 [1050] water or other rapid cool … …
TP309S S30908 solution treatment 1900 [1040]F water or other rapid cool … …
TP309H S30909 solution treatment 1900 [1040] water or other rapid cool … 7
TP309LMoN S30925 solution treatment 1920 [1050] water or other rapid cool … 7
TP309Cb S30940 solution treatment 1900 [1040]F water or other rapid cool … …
TP309HCb S30941 solution treatment 1900 [1040]H water or other rapid cool … 7
… S30942 solution treatment 2120 [1160] water or other rapid cool 6
… S31002 solution treatment 1900 [1040]F water or other rapid cool … …
TP310S S31008 solution treatment 1900 [1040]F water or other rapid cool … …
TP310H S31009 solution treatment 1900 [1040] water or other rapid cool … 7
TP310MoCbN S31025 solution treatment 2100 [1150] water or other rapid cool … 7
… S31035 solution treatment 2160–2280 water or other rapid cool … 7
[1180–1250]
TP310Cb S31040 solution treatment 1900 [1040]F water or other rapid cool … …
TP310HCb S31041 solution treatment 1900 [1040]H water or other rapid cool … 7

7
 A213/A213M – 09a

TABLE 3 Continued
Austenitizing/ Subcritical Annealing
UNS Solutioning or Tempering ASTM
Grade Heat Treat Type Cooling Media
Number Temperature, Temperature, Grain Size No.B
min or range °F [°C] min or range °F [°C]
TP310HCbN S31042 solution treatment 1900 [1040]F,H water or other rapid cool … 7
… S31060 solution treatment 1975–2160 water or other rapid cool … 7
[1080–1180]F
… S31254 solution treatment 2100 [1150] water or other rapid cool … …
… S31272 solution treatment 1920 [1050] water or other rapid cool … …
… S31277 solution treatment 2050 [1120]F water or other rapid cool … …
TP316 S31600 solution treatment 1900 [1040]F water or other rapid cool … …
TP316L S31603 solution treatment 1900 [1040]F water or other rapid cool … …
TP316H S31609 solution treatment 1900 [1040] water or other rapid cool … 7
TP316Ti S31635 solution treatment 1900 [1040] water or other rapid cool … …
TP316N S31651 solution treatment 1900 [1040]F water or other rapid cool … …
TP316LN S31653 solution treatment 1900 [1040]F water or other rapid cool … …
TP317 S31700 solution treatment 1900 [1040]F water or other rapid cool … …
TP317L S31703 solution treatment 1900 [1040]F water or other rapid cool … …
… S31725 solution treatment 1900 [1040]F water or other rapid cool … …
… S32050 solution treatment 2100 [1150]F water or other rapid cool … …
TP321 S32100 solution treatment 1900 [1040]F,H water or other rapid cool … …
TP321H S32109 solution treatment cold worked: water or other rapid cool … 7
2000 [1090]
hot rolled:
1925 [1050]H
… S32615 solution treatment 1900 [1040]F water or other rapid cool … 3 or finer
… S32716 solution treatment 1900 [1040]F water or other rapid cool … …
… S33228 solution treatment 2050 [1120] water or other rapid cool … …
… S34565 solution treatment 2050–2140 water or other rapid cool … …
[1120–1170]
TP347 S34700 solution treatment 1900 [1040]F,H water or other rapid cool … …
TP347W S34705 solution treatment 2000 [1100] water or other rapid cool … 7-10
TP347H S34709 solution treatment cold worked: water or other rapid cool … 7
2000 [1100]
hot rolled:
1925 [1050]H
TP347HFG S34710 solution treatment,I 2150 [1175]F water or other rapid cool … 7-10
TP347LN S34751 solution treatment 1900 [1040]F water or other rapid cool … …
TP348 S34800 solution treatment 1900 [1040]F,H water or other rapid cool … …
TP348H S34809 solution treatment cold worked: water or other rapid cool … 7
2000 [1100]
hot rolled:
1925 [1050]H
… S35045 solution treatment 2000 [1100]F still air cool or faster … …
XM-15 S38100 solution treatment 1900 [1040]F water or other rapid cool … …
… S38815 solution treatment 1950 [1065]F water or other rapid cool … …
… N08925 solution treatment 2010–2100 water or other rapid cool … …
[1100–1150]
… N08926 solution treatment 2010–2100 water or other rapid cool … …
[1100–1150]
Ferritic Stainless Steels
TP444 S44400 subcritical anneal … … 1400 [760] …
A
Where ellipses (…) appear in this table there is no requirement.
B
ASTM Grain Size No. listed, or coarser, unless otherwise indicated.
C
Approximately, to achieve properties.
D
Accelerated air cooling or liquid quenching shall be permitted for Class 2.
E
Accelerated cooling from the normalizing temperature shall be permitted for section thicknesses greater than 3 in. [75 mm].
F
Quenched in water or rapidly cooled by other means, at a rate sufficient to prevent re-precipitation of carbides, as demonstrable by the capability of tubes, heat treated
by either separate solution annealing or by direct quenching, passing Practices A262, Practice E. The manufacturer is not required to run the test unless it is specified on
the purchase order (see Supplementary Requirement S4). Note that Practices A262 requires the test to be performed on sensitized specimens in the low-carbon and
stabilized types and on specimens representative of the as-shipped condition for other types. In the case of low-carbon types containing 3 % or more molybdenum, the
applicability of the sensitizing treatment prior to testing shall be a matter for negotiation between the seller and the purchaser.
G
A maximum solution treating temperature of 2100 °F [1150 °C] is recommended for UNS S21500.
H
A solution treating temperature above 1950 °F [1065 °C] may impair resistance to intergranular corrosion after subsequent exposure to sensitizing conditions in the
indicated grades. When specified by the purchaser, a lower temperature stabilization or resolution anneal shall be used subsequent to the higher-temperature solution
anneal prescribed in this table.
I
Solution treatment shall be preceded by a softening heat treatment prior to cold-working. The softening temperature shall be at least 90 °F [50 °C] higher than the
solution heat treatment temperature, which shall be at 2150 °F [1180 °C] minimum.

8
 A213/A213M – 09a
TABLE 4 Tensile and Hardness Requirements

Hardness, Max
Tensile Yield Elongation
UNS Strength, Strength, in 2 in. or
Grade Brinell/Vickers Rockwell
Designation min, ksi min, ksi 50 mm,
[MPa] [MPa] min, %A,B
Low Alloy Steels:
T5b K51545 60 [415] 30 [205] 30 179 HBW/ 89 HRB
190HV
T9 K90941 60 [415] 30 [205] 30 179 HBW/ 89 HRB
190HV
T12 K11562 60 [415] 32 [220] 30 163 HBW/ 85 HRB
170 HV
T23 K40712 74 [510] 58 [400] 20 220 HBW/ 97 HRB
230 HV
T24 K30736 85 [585] 60 [415] 20 250 HBW/ 25 HRC
265 HV
T36 Class 1 K21001 90 [620] 64 [440] 15 250 HBW/ 25 HRC
265 HV
T36 Class 2 K21001 95.5 [660] 66.5 [460] 15 250 HBW/ 25 HRC
265 HV
T91 K90901 85 [585] 60 [415] 20 250 HBW/ 25 HRC
265 HV
T92 K92460 90 [620] 64 [440] 20 250 HBW/ 25 HRC
265 HV
T122 K91271 90 [620] 58 [400] 20 250 HBW/ 25 HRC
265 HV
T911 K91061 90 [620] 64 [440] 20 250 HBW/ 25 HRC
265 HV

All other low alloy 60 [415] 30 [205] 30 163 HB/ 85 HRB

grades 170 HV

Austenitic Stainless
Steels:
TP201 S20100 95 [655] 38 [260] 35 219 HBW/ 95 HRB
230 HV
TP202 S20200 90 [620] 45 [310] 35 219 HBW/ 95 HRB
230 HV
XM-19 S20910 100 [690] 55 [380] 35 250 HBW/ 25 HRC
265 HV
... S21500 78 [540] 33 [230] 35 192 HBW/ 90 HRB
200 HV
... S25700 78 [540] 35 [240] 50 217 HBW 95 HRB
TP304 S30400 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP304L S30403 70 [485] 25 [170] 35 192 HBW/ 90 HRB
200 HV
TP304H S30409 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S30432 86 [590] 34 [235] 35 219 HBW/ 95 HRB
230 HV
... S30434 73 [500] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP304N S30451 80 [550] 35 [240] 35 192 HBW/ 90 HRB
200 HV
TP304LN S30453 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S30615 90 [620] 40 [275] 35 192 HBW/ 90 HRB
200 HV
... S30815 87 [600] 45 [310] 40 217 HBW 95 HRB
TP309S S30908 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP309H S30909 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP309LMoN S30925 93 [640] 38 [260] 30 256 HBW/270 HV 100 HRB
TP309Cb S30940 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP309HCb S30941 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S30942 86 [590] 34 [235] 35 219 HBW/ 95 HRB
230 HV
... S31002 73 [500] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310S S31008 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV

9
 A213/A213M – 09a

TABLE 4 Continued
Hardness, Max
Tensile Yield Elongation
UNS Strength, Strength, in 2 in. or
Grade Brinell/Vickers Rockwell
Designation min, ksi min, ksi 50 mm,
[MPa] [MPa] min, %A,B
TP310H S31009 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310MoCbN S31025 93 [640] 39 [270] 30 256 HBW/ 100 HRB
270 HV
S31035 95 [655] 45 [310] 40 220 HBW/ 96 HRB
230 HV
TP310Cb S31040 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310HCb S31041 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP310HCbN S31042 95 [655] 43 [295] 30 256 HBW 100 HRB
TP310MoLN S31050
T # 0.25 in. [6 mm] 84 [580] 39 [270] 25 217 HBW 95 HRB
t > 0.25 in. [6 mm] 78 [540] 37 [255] 25 217 HBW 95 HRB
... S31060 87 [600] 41 [280] 40 217 HBW 95 HRB
... S31254
T # 0.187 in. [5 mm] 98 [675] 45 [310] 35 220 HBW/ 96 HRB
230 HV
T > 0.187 in. [5 mm] 95 [655] 45 [310] 35 220 HBW/ 96 HRB
230 HV
... S31272 65 [450] 29 [200] 35 217 HBW 95 HRB
... S31277 112 [770] 52 [360] 40 241 HBW 100 HRB
TP316 S31600 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316L S31603 70 [485] 25 [170] 35 192 HBW/ 90 HRB
200 HV
TP316H S31609 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316Ti S31635 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP316N S31651 80 [550] 35 [240] 35 192 HBW/ 90 HRB
200 HV
TP317 S31700 75 [515] 30 [205] 34 192 HBW/ 90 HRB
200 HV
TP317L S31703 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S31725 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S32050 98 [675] 48 [330] 40 256 HBW 100 HRB
TP321 S32100 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP321H S32109 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S32615 80 [550] 32 [220] 25 192 HBW/ 90 HRB
200 HV
... S32716 80 [240] 35 [240] 35 192 HBW/ 90 HRB
200 HV
... S33228 73 [500] 27 [185] 30 192 HBW/ 90 HRB
200 HV
... S34565 115 [790] 60 [415] 35 241 HBW 100 HRB
TP347 S34700 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347W S34705 90 [620] 38 [260] 30 219 HBW/ 95 HRB
230 HV
TP347H S34709 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347HFG S34710 80 [550] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP347LN S34751 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP348 S34800 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
TP348H S34809 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S35045 70 [485] 25 [170] 35 192 HBW/ 90 HRB
200 HV
XM-15 S38100 75 [515] 30 [205] 35 192 HBW/ 90 HRB
200 HV
... S38815 78 [540] 37 [255] 30 256 HBW 100 HRB
... N08925 87 [600] 43 [295] 40 217 HBW 95 HRB

10
 A213/A213M – 09a

TABLE 4 Continued
Hardness, Max
Tensile Yield Elongation
UNS Strength, Strength, in 2 in. or
Grade Brinell/Vickers Rockwell
Designation min, ksi min, ksi 50 mm,
[MPa] [MPa] min, %A,B
... N08926 94 [650] 43 [295] 35 256 HBW 100 HRB

Ferritic Stainless Steels

TP444 S44400 60[415] 40[275] 20 217 HBW/ 230 HV 96 HRB
A
When standard round 2 in. or 50 mm gage length or smaller proportionally sized specimens with gage length equal to 4D (4 times the diameter) is used, the minimum
elongation shall be 22 % for all low alloy grades except T23, T24, T91, T92, T122, and T911; and except for TP444.
B
For longitudinal strip tests, a deduction from the basic minimum elongation values of 1.00 % for TP444, T23, T24, T91, T92, T122, and T911, and of 1.50 % for all other
low alloy grades for each 1⁄32-in. [0.8-mm] decrease in wall thickness below 5⁄16 in. [8 mm] shall be made.

14.2 For tensile and hardness test requirements, the term lot TABLE 5 Computed Minimum ValuesA
applies to all tubes prior to cutting, of the same size (see 4.1.6) Wall Thickness
Elongation in 2 in.
that are produced from the same heat of steel. When final heat or 50 mm, min, %

treatment is in a batch-type furnace, a lot shall include only S44400,

T23, T24, T91, All Other
those tubes of the same size and the same heat that are heat in. mm
T92, T122, and
T 36
Ferritic Grades
treated in the same furnace charge. When the final heat T911
treatment is in a continuous furnace, or when the heat-treated ⁄ [0.312]
5 16 8 20 15 30
condition is obtained directly by quenching after hot forming, ⁄ [0.281]
9 32 7.2 19 14 29
1⁄4 [0.250] 6.4 18 13 27
a lot shall include all tubes of the same size and heat, heat 7⁄32 [0.219] 5.6 17 12 26
treated in the same furnace at the same temperature, time at 3⁄16 [0.188] 4.8 16 11 24
heat, and furnace speed; or all tubes of the same size and heat, 5⁄32 [0.156] 4 15 10 23
1⁄8 [0.125] 3.2 14 9 21
hot formed and quenched in the same production run, except as 3⁄32 [0.094] 2.4 13 8 20
prescribed in 9.1.3. 1⁄16 [0.062] 1.6 12 7 18
0.062 to 0.035, excl 1.6 to 0.9 12 7 17
15. Product Marking 0.035 to 0.022, excl 0.9 to 0.6 11 6 17
0.022 to 0.015 incl 0.6 to 0.4 11 6 16
15.1 In addition to the marking prescribed in Specification A
Calculated elongation requirements shall be rounded to the nearest whole
A1016/A1016M, the marking shall include: the condition, hot number.
finished or cold finished; and the wall designation, minimum
wall or average wall. TABLE 6 Permitted Variations in Average Wall Thickness for Hot
15.2 For the austenitic stainless steels having a grain size Formed Tubes
requirement (see Table 3) the marking shall also include the Tolerance in %, from specified
heat number and heat-treatment lot identification. NPS [DN] Designator Over Under
15.3 When either T2 or T12 are ordered with higher sulfur 1⁄8 to 21⁄2 [6 to 65] incl, all t/D ratiosA 20 12.5
contents as permitted by Note B of Table 1, the marking shall Above 21⁄2 [65], t/D # 5 %A 22.5 12.5
Above 21⁄2 [65], t/D > 5 %A 15 12.5
include the letter, S, following the grade designation: T2S or
A
T12S. t = specified wall thickness D = specified outside diameter

16. Keywords
16.1 alloy steel tubes; austenitic stainless steel; boiler tubes;
ferritic stainless steel; heat exchanger tubes; high-temperature
applications; seamless steel tubes; steel tubes; superheater
tubes; temperature service applications-high

11
 A213/A213M – 09a
TABLE 7 Number of Tubes in a Lot Heat Treated by the
Continuous Process or by Direct Quench After Hot Forming
Size of Tube Size of Lot
2 in. [50.8 mm] and over in outside not more than 50
diameter and 0.200 in. [5.1 mm] and over tubes
in wall thickness
2 in. [50.8 mm] and over in outside not more than 75
diameter and tubes
under 0.200 in. [5.1 mm] in wall thickness
Less than 2 in. [50.8 mm] but over 1 in. not more than 75
[25.4 mm] in outside diameter tubes
1 in. [25.4 mm] or less in outside not more than 125
diameter tubes

SUPPLEMENTARY REQUIREMENTS

The following supplementary requirements shall apply only when specified by the purchaser in the
inquiry, contract, or order.

S1. Stress-Relieved Annealed Tubes S3. Unstraightened Tubes

S1.1 For use in certain corrosives, particularly chlorides S3.1 When the purchaser specifies tubes unstraightened
where stress corrosion may occur, tubes in Grades TP304L, after final heat treatment (such as coils), the minimum yield
TP316L, TP321, TP347, and TP348 may be specified in the strength of Table 4 shall be reduced by 5 ksi [35 MPa].
stress-relieved annealed condition. S3.2 On the certification, and wherever the grade designa-
S1.2 When stress-relieved tubes are specified, tubes shall be tion for unstraightened tubing appears, it shall be identified
given a heat treatment at 1500 to 1650 °F [815 to 900 °C] after with the suffix letter “U” (for example, 304-U, 321-U, etc.).
roll straightening. Cooling from this temperature range may be
either in air or by slow cooling. No mechanical straightening is S4. Intergranular Corrosion Test
permitted after the stress-relief treatment. S4.1 When specified, material shall pass intergranular cor-
S1.3 Straightness of the tubes shall be a matter of negotia- rosion tests conducted by the manufacturer in accordance with
tion between the purchaser and supplier. Practices A262, Practice E.
S2. Stabilizing Heat Treatment NOTE S4.1—Practice E requires testing on the sensitized condition for
S2.1 Subsequent to the solution anneal required in Section low carbon or stabilized grades, and on the as-shipped condition for other
grades.
6, Grades TP309HCb, TP310HCb, TP310HCbN, TP321,
TP321H, TP347, TP347H, TP348, and TP348H shall be given S4.2 A stabilization heat treatment in accordance with
a stabilization heat treatment at a temperature lower than that Supplementary Requirement S2 may be necessary and is
used for the initial solution annealing heat treatment. The permitted in order to meet this requirement for the grades
temperature of stabilization heat treatment shall be at a containing titanium or columbium, particularly in their H
temperature as agreed upon between the purchaser and vendor. versions.

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this specification since the last issue,
A213/A213M – 09, that may impact the use of this specification. (Approved April 1, 2009)

(1) Introduced wall thickness tolerances for hot formed tubes (2) Added new Table 6 and renumbered subsequent tables.
ordered to average wall thickness in 12.2.

Committee A01 has identified the location of selected changes to this specification since the last issue,
A213/A213M – 08a, that may impact the use of this specification. (Approved March 15, 2009)

(1) Added new grade TP310MoCbN to Tables 2-4. (3) Added new grade TP309LMoN to Tables 2-4.
(2) Added new grade TP347W to Tables 2-4.

12
 A213/A213M – 09a
Committee A01 has identified the location of selected changes to this specification since the last issue,
A213/A213M – 08, that may impact the use of this specification. (Approved October 15, 2008)

(1) Added UNS N08925 and N08926 to Tables 2-4.

Committee A01 has identified the location of selected changes to this specification since the last issue,
A213/A213M – 07a, that may impact the use of this specification. (Approved March 1, 2008)

(1) Added new Grade S31035 to Tables 2-4.

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13