ASTM A213/A213M-23

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A213/A213M − 22a A213/A213M − 23 Used in USDOE-NE standards
Standard Specification for
Seamless Ferritic and Austenitic Alloy-Steel Boiler,
Superheater, and Heat-Exchanger Tubes
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 U.S. Department of Defense.
1. Scope*
1.1 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated
Grades T5, TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing
the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without
these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this specification are ⁄8 in. [3.2 mm] in inside diameter to 5 in. [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 in the order,
average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements
of this specification.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. 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. The
inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel
Tubes
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.
Current edition approved Nov. 1, 2022May 1, 2023. Published December 2022June 2023. Originally approved in 1939. Last previous edition approved in 2022 as
A213/A213M – 22.A213/A213M – 22a. DOI: 10.1520/A0213_A0213M-22A.10.1520/A0213_A0213M-23.
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-213 in Section II of that Code.
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 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
A213/A213M − 23
A
TABLE 1 Chemical Composition Limits, % , for Low Alloy Steel
UNS
Grade Composition, %
Designation
E
Carbon Manga- Phospho- Sul- Silicon Nickel Chromium Molybdenum Vana- Boron Niobium Nitrogen Aluminum Tungsten Other
nese rus fur dium Elements
B
T2 K11547 0.10–0.20 0.30–0.61 0.025 0.025 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 . . . . . . .
B
T12 K11562 0.05–0.15 0.30–0.61 0.025 0.025 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 0.40 1.90–2.60 0.05–0.30 0.20–0.30 0.0010– 0.02–0.08 0.015 0.030 1.45–1.75 Ti 0.005–
0.006 0.060
Ti/N $
C
3.5
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 Type 1 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
T91 Type 2 K90901
D D D D D D D D D D
Heat 0.08–0.12 0.30–0.50 0.020 0.005 0.20–0.40 0.20 8.0–9.5 0.85–1.05 0.18–0.25 0.001 0.06–0.10 0.035– 0.020 0.05 Ti 0.01
D
D
Zr 0.01
0.070
D
Cu 0.10
Product 0.07–0.13 0.80–1.05 0.16–0.27 0.05–0.11
Sb
D
0.003
Sn
D
0.010
As
D
0.010
N/Al 4.0
min
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
F
T93 K91350 0.05–0.10 0.20–0.70 0.020 0.008 0.05–0.50 0.20 8.50–9.50 . 0.15–0.30 0.007– 0.005– 0.030 2.5–3.5 Co
0.015 0.015 2.5–3.5
Nd
0.010–
0.060
O 0.0050
T115 K91060
Heat 0.08–0.13 0.20–0.50 0.020 0.005 0.15–0.45 0.25 10.0–11.0 0.40–0.60 0.18–0.25 0.001 0.02–0.06 0.030– 0.02 . Ti 0.01
0.070 Zr 0.01
Cu 0.10
As 0.010
Sn 0.010
Sb 0.003
W 0.05
N/Al 4.0
min
G
CNB
10.5 max
A213/A213M − 23
TABLE 1 Continued
UNS
Grade Composition, %
Designation
E
Carbon Manga- Phospho- Sul- Silicon Nickel Chromium Molybdenum Vana- Boron Niobium Nitrogen Aluminum Tungsten Other
nese rus fur dium Elements
Product 0.07–0.14 0.20–0.50 0.020 0.005 0.15–0.45 0.25 10.0–11.0 0.37–0.63 0.16–0.27 0.001 0.02–0.07 0.030– 0.02 . Ti 0.01
0.070
Zr 0.01
Cu 0.10
As 0.010
Sn 0.010
Sb 0.003
W 0.05
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
Zr 0.01
T128 K91421 0.12 – 0.30 – 0.02 0.01 0.20 – 0.10 – 0.40 10.50 – 0.20 – 0.60 0.15 – 0.008 – 0.02 – 0.06 0.002 – 0.02 1.50 – Co 1.50
0.17 0.80 0.60 12.00 0.30 0.015 0.020 2.20 – 2.20
Cu 0.15
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
T921 K91201 0.08–0.12 0.5–0.7 0.03 0.02 1.6–2.2 0.8–1.4 8.0–9.5 0.8–1.1 { { { 0.02–0.05 0.04 { Cu
0.8-1.4
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 16.3.
C
Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness
testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
D
Applies to both heat and product analyses.
E
The terms Niobium (Nb) and Columbium (Cb) are alternate names for the same element.
F
Grade T93 shall have a Nb + Ta content of 0.05–0.12 %.
G
Chromium-Nickel Balance is defined as CNB = (Cr + 6Si + 4Mo +1.5W + 11V + 5Nb + 9Ti + 12Al) – (40C + 30N + 4Ni + 2Mn + 1Cu).

A213/A213M − 23
A
TABLE 2 Chemical Composition Limits, % , for Austenitic and Ferritic Stainless Steel
UNS Composition
Designation
Grade
Manga- Phospho- Other
B N
Carbon Sulfur Silicon Chromium Nickel Molybdenum Nitrogen 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 . 0.25 . . .
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 . . . . .
D
TP304L S30403 0.035 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 E E
S30434 0.07–0.14 2.00 0.040 0.010 1.00 17.5–19.5 9.0–12.0 . . 0.10–0.40 0.10–0.25 B 0.001–
0.004
Cu 2.50–
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 . . .
D
TP304LN S30453 0.035 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
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 0.015 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 0.025 0.015 0.40 21.5–23.5 23.5–26.5 . 0.20–0.30 0.40–0.60 . W 3.0–4.0
Co 1.0–2.0
Cu 2.5–3.5
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 . .
C O O
S31043 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 . 0.15–0.35 0.20–0.50 . Ta 0.20 min
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 0.18–0.25 . . Cu 0.50–1.00

A213/A213M − 23
TABLE 2 Continued
UNS Composition
Designation
Grade
Manga- Phospho- Other
B N
Carbon Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Niobium Titanium
nese rus Elements
... S31266 0.030 2.00–4.00 0.035 0.020 1.00 23.0–25.0 21.0–24.0 5.2–6.2 0.35–0.60 ... ... Cu 1.00–2.00
W 1.50–2.50
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 . . . .
D
TP316L S31603 0.035 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 . . .
D
TP316LN S31653 0.035 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
S31730 0.030 2.00 0.040 0.010 1.00 17.0–19.0 15.0–16.5 3.0–4.0 0.045 . . Cu 4.0–5.0
C P P
S31740 0.005–0.020 2.00 0.045 0.030 1.00 17.0–19.0 11.0–15.0 3.0–4.5 0.06–0.15 0.20–0.50 { {
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
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 . .
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 . .
F
TP347LN S34751 0.005–0.020 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 . 0.06–0.10 0.20–0.50 . .
C F
S34752 0.005–0.020 2.00 0.035 0.010 0.60 17.0–19.0 10.0–13.0 0.20–1.20 0.06–0.12 0.20–0.50 . Cu 2.50–3.50
B 0.001–0.005
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
M
Alloy 20 N08020 0.070 2.00 0.045 0.035 1.00 19.0-21.0 32.0-38.0 2.00-3.00 . . Cu 3.00-4.00
N08028 0.030 2.50 0.030 0.030 1.0 26.0-28.0 30.0-34.0 3.0-4.0 Cu 0.6-1.4
N08029 0.020 2.0 0.025 0.015 0.6 26.0-28.0 30.0-34.0 4.0-5.0 Cu 0.6-1.4

A213/A213M − 23
TABLE 2 Continued
UNS Composition
Designation
Grade
Manga- Phospho- Other
B N
Carbon Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Niobium Titanium
nese rus Elements
C
N08367 0.030 2.00 0.040 0.030 1.00 20.0-22.0 23.5-25.5 6.00-7.00 0.18-0.25 . . Cu 0.75
800 N08800 0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 . . Cu 0.75
Al 0.15–0.60
Ti 0.15–0.60
I
Fe 39.5 min
800H N08810 0.05–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 . . Cu 0.75
Al 0.15–0.60
Ti 0.15–0.60
I
Fe 39.5 min
... N08811 0.06–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 ... ... Cu 0.75
J
Al 0.15–0.60
J
Ti 0.15–0.60
I
Fe 39.5 min
N08904 0.020 2.00 0.040 0.030 1.00 19.0–23.0 23.0–28.0 4.0–5.0 0.10 Cu 1.00–2.00
... 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
K L
TP444 S44400 0.03 1.00 0.040 0.030 1.00 17.5–19.5 1.75–2.50 0.035 . .
C
S35030 0.05–0.10 1.50 0.030 0.015 0.50–2.0 18.5–22.5 22.5–27.5 { 0.05–0.15 0.25–0.75 { Cu: 2.5–3.5
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 + ⁄2 Nb) of not less than 2 times and not more than 4 times the carbon content.
F
Grade TP347LN and S34752 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
Iron shall be determined arithmetically by difference of 100 minus the sum of the other specified elements.
J
Al + Ti shall be 0.85 % min; 1.20 % max.
K
Grade TP444 shall have Ni + Cu = 1.00 max.
L
Grade TP444 shall have Ti + Nb content not less than 0.20 + 4(C+N) and not more than 0.80 %.
M
N08020 shall have an Nb + Ta content of not less than 8 times the carbon content and not more than 1.00%.
N
The terms Niobium (Nb) and Columbium (Cb) are alternative names for the same element.
O
UNS S31043 shall have a Nb + 1/2Ta content of 0.30 to 0.60 %.
P
UNS designation S31740 steel shall have a niobium content of not less than 15 times the carbon content.

A213/A213M − 23
E112 Test Methods for Determining Average Grain Size
2.2 AWS Specifications
A5.5/A5.5M Specification for Low-Alloy Steel Electrodes for Shielded Metal Arc Welding
A5.23/A5.23M Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
A5.28/A5.28M Specification for Low-Alloy Steel Electrodes for Gas Shielded Arc Welding
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored Arc Welding
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, refer to Terminology A941.
4. Ordering Information
4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for products under this specification.
Such requirements to be considered include, but are not limited to, the following:
4.1.1 Quantity (feet, metres, or number of lengths),
4.1.2 Name of material (seamless tubes),
4.1.3 Grade (Tables 1 and 2),
4.1.4 Condition (hot finished or cold finished),
4.1.5 Heat treatment type (Table 3).
4.1.6 Controlled structural characteristics (see 6.3),
4.1.7 Size (outside diameter and minimum wall thickness, unless average wall thickness is specified),
4.1.8 Length (specific or random),
4.1.9 Hydrostatic Test or Nondestructive Electric Test (see 10.1),
4.1.10 Specification designation and year of issue,
4.1.11 Increased sulfur (for machinability, see Note B, Table 1, and 16.3), and
4.1.12 Special requirements and any supplementary requirements selected.
5. General Requirements
5.1 Product furnished to this specification shall conform to the requirements of Specification A1016/A1016M, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A1016/A1016M constitutes nonconformance with this specification. In case of conflict between the requirements of
this specification and Specification A1016/A1016M, this specification shall prevail.
6. Materials and Manufacture
6.1 Manufacture and Condition—Tubes shall be made by the seamless process and shall be either hot finished or cold finished,
as specified. Grade TP347HFG shall be cold finished.
6.2 Heat Treatment:
6.2.1 Ferritic Alloy and Ferritic Stainless Steels—The ferritic alloy and ferritic stainless steels shall be reheated for heat treatment
in accordance with the requirements of Table 3. Heat treatment shall be carried out separately and in addition to heating for hot
forming.
Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http://www.aws.org.
A213/A213M − 23
A
TABLE 3 Heat Treatment and Grain Size Requirements
Austenitizing/
Subcritical Annealing
Solutioning/
UNS or Tempering ASTM
Grade Heat Treat Type Stabilizing Cooling Media
B
Number Temperature, Grain Size No.
Temperature,
min or range °F [°C]
min or range °F [°C]
Ferritic Alloy Steels
T2 K11547 full or isothermal { { { {
anneal; or
normalize and { { { {
temper; or
subcritical anneal { { 1200 to 1350 {
[650 to 730]
T5 K41545 full or isothermal { { { {
anneal; or
normalize and { { 1250 [675] {
temper
T5b K51545 full or isothermal { { { {
anneal; or
normalize and { { 1250 [675] {
temper
C
T5c K41245 subcritical anneal { air or furnace 1350 [730] {
T9 S50400 full or isothermal { { { {
anneal; or
T9 K90941 full or isothermal { { { {
anneal; or
normalize and { { 1250 [675] {
temper
T11 K11597 full or isothermal { { { {
anneal; or
normalize and { { 1200 [650] {
temper
T12 K11562 full or isothermal { { { {
anneal; or
normalize and { { { {
temper; or
subcritical anneal { { 1200 to 1350 {
[650 to 730]
T17 K12047 full or isothermal { { { {
anneal; or
normalize and { { 1200 [650] {
temper
T21 K31545 full or isothermal { { { {
anneal; or
normalize and { { 1250 [675] {
temper
T22 K21590 full or isothermal { { { {
anneal; or
normalize and { { 1250 [675] {
temper
T23 K40712 normalize and 1900–1975 { 1350–1470 [730–800] {
temper [1040–1080]
D
T24 K30736 normalize and 1800–1870 1350–1420 [730–770] {
temper [980–1020]
E
T36 K21001 normalize and 1650 [900] 1100 [595] {
temper
T91 Types 1 and 2 K90901 normalize and 1900–1975 { 1350–1470 [730–800] {
temper [1040–1080]
T92 K92460 normalize and 1900–1975 { 1350–1470 [730–800] {
temper [1040–1080]
T93 K91350 normalize and 1960–2140 { 1380–1455 [750–790] {
temper [1070–1170]
T115 K91060 normalize and 1920–2010 . 1380–1455 .
temper [1050–1100] [750–790]
T122 K91261 normalize and 1900–1975 { 1350–1470 [730–800] {
temper [1040–1080]
T128 K91421 normalize and 1975–2140 air 1400–1470 {
temper [1080–1170] [760–800]
D
T911 K91061 normalize and 1900–1975 1365–1435 {
temper [1040–1080] [740–780]
T921 K91201 normalize and 1670–1740 air 1350–1420 {
temper [910–950] [730-770]
Austenitic Stainless Steels
F
TP201 S20100 solution treatment 1900 [1040] water or other rapid cool { {
F
TP202 S20200 solution treatment 1900 [1040] water or other rapid cool { {
F
XM-19 S20910 solution treatment 1900 [1040] water or other rapid cool { {
F,G
S21500 solution treatment 1900 [1040] water or other rapid cool { {
A213/A213M − 23
TABLE 3 Continued
Austenitizing/
Subcritical Annealing
Solutioning/
UNS or Tempering ASTM
Grade Heat Treat Type Stabilizing Cooling Media
B
Number Temperature, Grain Size No.
Temperature,
min or range °F [°C]
min or range °F [°C]
F
S25700 solution treatment 1900 [1040] water or other rapid cool { {
F
TP304 S30400 solution treatment 1900 [1040] water or other rapid cool { {
F
TP304L S30403 solution treatment 1900 [1040] water or other rapid cool { {
TP304H S30409 solution treatment 1900 [1040] water or other rapid cool { 7
F
S30432 solution treatment 2000 [1100] water or other rapid cool { {
S30434 solution treatment 2120 [1160] water or other rapid cool { {
F
TP304N S30451 solution treatment 1900 [1040] water or other rapid cool { {
F
TP304LN S30453 solution treatment 1900 [1040] water or other rapid cool { {
F
S30615 solution treatment 1900 [1040] water or other rapid cool { {
S30815 solution treatment 1920 [1050] water or other rapid cool { {
F
TP309S S30908 solution treatment 1900 [1040] 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
F
TP309Cb S30940 solution treatment 1900 [1040] water or other rapid cool { {
H
TP309HCb S30941 solution treatment 1900 [1040] water or other rapid cool { 7
S30942 solution treatment 2120 [1160] water or other rapid cool 6
F
S31002 solution treatment 1900 [1040] water or other rapid cool { {
F
TP310S S31008 solution treatment 1900 [1040] 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 { {
[1180–1250]
F
TP310Cb S31040 solution treatment 1900 [1040] water or other rapid cool { {
H
TP310HCb S31041 solution treatment 1900 [1040] water or other rapid cool { 7
F,H
TP310HCbN S31042 solution treatment 1900 [1040] water or other rapid cool { 7
F,H
{ S31043 solution treatment 1900 [1040] water or other rapid cool { 7
F
TP310MoLN S31050 solution treatment 1900 [1040] water or other rapid cool { {
S31060 solution treatment 1975–2160 water or other rapid cool { 7
F
[1080–1180]
S31254 solution treatment 2100 [1150] water or other rapid cool { {
S31266 solution treatment 2100 [1150] water or other rapid cool { {
S31272 solution treatment 1920 [1050] water or other rapid cool { {
F
S31277 solution treatment 2050 [1120] water or other rapid cool { {
F
TP316 S31600 solution treatment 1900 [1040] water or other rapid cool { {
F
TP316L S31603 solution treatment 1900 [1040] 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 { {
F
TP316N S31651 solution treatment 1900 [1040] water or other rapid cool { {
F
TP316LN S31653 solution treatment 1900 [1040] water or other rapid cool { {
F
TP317 S31700 solution treatment 1900 [1040] water or other rapid cool { {
F
TP317L S31703 solution treatment 1900 [1040] water or other rapid cool { {
F
S31725 solution treatment 1900 [1040] water or other rapid cool { {
F
S31730 solution treatment 1900 [1040] water or other rapid cool { {
F
...