ASTM A249/A249M-04a
(Specification)Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
SCOPE
1.1 This specification covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels listed in Table 1, with various grades intended for such use as boiler, superheater, heat exchanger, or condenser tubes.
1.2 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb, TP316, TP321, TP347, and TP348, and are intended for high-temperature service such as for superheaters and reheaters.
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 12 in. [304.8 mm] in outside diameter and 0.015 to 0.320 in. [0.4 to 8.1 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.
1.4 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.
1.5 Optional supplementary requirements are provided and, when one or more of these are desired, each shall be so stated in the order.
1.6 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.
1.7 The following safety hazards caveat pertains only to the test method described in the Supplementary Requirements of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A specific warning statement is given in Supplementary Requirement S7, Note S7.1.
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Used in USDOE-NE Standards
Designation: A 249/A 249M – 04a
Standard Specification for
Welded Austenitic Steel Boiler, Superheater, Heat-
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Exchanger, and Condenser Tubes
This standard is issued under the fixed designationA 249/A 249M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 1.7 The following safety hazards caveat pertains only to the
2 test method described in the Supplementary Requirements of
1.1 This specification covers nominal-wall-thickness
this specification.Thisstandarddoesnotpurporttoaddressall
weldedtubesandheavilycoldworkedweldedtubesmadefrom
of the safety concerns, if any, associated with its use. It is the
the austenitic steels listed in Table 1, with various grades
responsibility of the user of this standard to establish appro-
intended for such use as boiler, superheater, heat exchanger, or
priate safety and health practices and determine the applica-
condenser tubes.
bility of regulatory limitations prior to use. Aspecific warning
1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
statement is given in Supplementary Requirement S7, Note
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
S7.1.
modifications of Grades TP304, TP309S, TP309Cb, TP310S,
TP310Cb,TP316,TP321,TP347, andTP348, and are intended
2. Referenced Documents
for high-temperature service such as for superheaters and
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2.1 ASTM Standards:
reheaters.
A 262 Practices for Detecting Susceptibility to Intergranu-
1.3 The tubing sizes and thicknesses usually furnished to
1 lar Attack in Austenitic Stainless Steels
thisspecificationare ⁄8in.[3.2mm]ininsidediameterto12in.
A 480/A 480M Specification for General Requirements for
[304.8 mm] in outside diameter and 0.015 to 0.320 in. [0.4 to
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
8.1 mm], inclusive, in wall thickness. Tubing having other
Sheet, and Strip
dimensions may be furnished, provided such tubes comply
A 1016/A 1016M Specification for General Requirements
with all other requirements of this specification.
for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stain-
1.4 Mechanical property requirements do not apply to
less Steel Tubes
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tubing smaller than ⁄8 in. [3.2 mm] in inside diameter or 0.015
E112 Test Methods for Determining Average Grain Size
in. [0.4 mm] in thickness.
E 213 Practice for Ultrasonic Examination of Metal Pipe
1.5 Optional supplementary requirements are provided and,
and Tubing
when one or more of these are desired, each shall be so stated
E 273 Practice for Ultrasonic Examination of the Weld
in the order.
Zone of Welded Pipe and Tubing
1.6 The values stated in either inch-pound units or SI units
E 527 Practice for Numbering Metals and Alloys (UNS)
are to be regarded separately as standard. Within the text, the
2.2 ASME Boiler and Pressure Vessel Code:
SI units are shown in brackets. The values stated in each
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Section VIII
system are not exact equivalents; therefore, each system must
2.3 Other Standard:
be used independently of the other. Combining values from the
SAE J1086 Practice for Numbering Metals and Alloys
two systems may result in nonconformance with the specifi-
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(UNS)
cation. The inch-pound units shall apply unless the “M”
designation of this specification is specified in the order.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.10 on Stainless and Alloy Steel Tubular Products. the ASTM website.
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Current edition approved Sept. 1, 2004. Published September 2004. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1941. Last previous edition approved in 2004 as A 249/A 249M – 04. International Headquarters, Three Park Ave., New York, NY 10016-5990.
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Available from Society of Automotive Engineers (SAE), 400 Commonwealth
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-249 in Section II of that Code. Dr., Warrendale, PA 15096-0001.
*ASummary 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.
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A 249/A 249M – 04a
3. Ordering Information 3.1.4 Size (outside d
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