ASTM A1098/A1098M-16
(Specification)Standard Specification for Welded Austenitic Alloy Steel Boiler, Superheater, Condenser, and Heat Exchanger Tubes with Textured Surface(s)
Standard Specification for Welded Austenitic Alloy Steel Boiler, Superheater, Condenser, and Heat Exchanger Tubes with Textured Surface(s)
ABSTRACT
This specification applies to average or minimum-wall thickness welded tubes made from various grades of austenitic alloy steel materials in which the external tube surface, internal tube surface, or both internal and external tube surfaces have a textured configuration for improved heat transfer or fluid flow or both. Texture surface(s) are produced by cold forming a specified configuration on the surface(s) of base strip material, prior to welding. The produced welded textured tubes may be used in boilers, superheaters, condensers, evaporators, heat exchangers, and other similar heat transfer apparatus in diameters up to and including 1.5 in. [38 mm] for various wall thicknesses up to and including 0.079 in. [2 mm].
This specification includes requirements for manufacturing process, chemical composition, heat treatment, product analysis, tensile strength, hardness, reverse-bend test, workmanship, finish, and appearance. It also covers mechanical tests, nondestructive tests, forming operations, sampling, and product marking.
SCOPE
1.1 This specification covers average or minimum-wall thickness welded tubes made from various grades of austenitic alloy steel materials in which the (1) external tube surface, (2) internal tube surface, or (3) both internal and external tube surfaces have a textured configuration for improved heat transfer or fluid flow or both. Texture surface(s) are produced by cold forming a specified configuration on the surface(s) of base strip material, prior to welding. The produced welded textured tubes may be used in boilers, superheaters, condensers, evaporators, heat exchangers, and other similar heat transfer apparatus in diameters up to and including 1.5 in. [38 mm] for various wall thicknesses up to and including 0.079 in. [2 mm].
1.2 The tubing sizes and thicknesses usually furnished to this specification are 3/8 in. [10 mm] inside diameter (ID) to 1.5 in. [38 mm] outside diameter and 0.020 to 0.079 in. [0.5 to 2 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished provided such tubes comply with all other requirements of this specification.
1.3 Optional supplementary requirements are provided and, when one or more of these are desired, each shall be so stated in the order.
1.4 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 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 The following safety hazards statement pertains only to the test method and the Supplementary Requirements of this specification. A specific warning statement is given in the Supplementary Requirements. 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.
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Designation:A1098/A1098M −16
Standard Specification for
Welded Austenitic Alloy Steel Boiler, Superheater,
Condenser, and Heat Exchanger Tubes with Textured
1
Surface(s)
This standard is issued under the fixed designation A1098/A1098M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Supplementary Requirements. This standard does not purport
to address all of the safety concerns, if any, associated with its
1.1 This specification covers average or minimum-wall
use. It is the responsibility of the user of this standard to
thickness welded tubes made from various grades of austenitic
establish appropriate safety and health practices and deter-
alloy steel materials in which the (1) external tube surface, (2)
mine the applicability of regulatory limitations prior to use.
internal tube surface, or (3) both internal and external tube
surfaces have a textured configuration for improved heat
2. Referenced Documents
transfer or fluid flow or both. Texture surface(s) are produced
by cold forming a specified configuration on the surface(s) of 2
2.1 ASTM Standards:
base strip material, prior to welding. The produced welded
A249/A249M Specification for Welded Austenitic Steel
textured tubes may be used in boilers, superheaters,
Boiler, Superheater, Heat-Exchanger, and Condenser
condensers, evaporators, heat exchangers, and other similar
Tubes
heat transfer apparatus in diameters up to and including 1.5 in.
A262 Practices for Detecting Susceptibility to Intergranular
[38mm]forvariouswallthicknessesuptoandincluding0.079
Attack in Austenitic Stainless Steels
in. [2 mm].
A370 Test Methods and Definitions for Mechanical Testing
1.2 The tubing sizes and thicknesses usually furnished to
of Steel Products
3
this specification are ⁄8 in. [10 mm] inside diameter (ID) to 1.5
A480/A480M Specification for General Requirements for
in. [38 mm] outside diameter and 0.020 to 0.079 in. [0.5 to 2
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
mm], inclusive, in wall thickness. Tubing having other dimen-
Sheet, and Strip
sions may be furnished provided such tubes comply with all
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
other requirements of this specification.
Alloys, and Ferroalloys
1.3 Optional supplementary requirements are provided and, A1016/A1016M Specification for General Requirements for
when one or more of these are desired, each shall be so stated Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
in the order.
Steel Tubes
E527 Practice for Numbering Metals and Alloys in the
1.4 The values stated in either inch-pound units or SI units
Unified Numbering System (UNS)
are to be regarded separately as standard. Within the text, the
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SI units are shown in brackets. The values stated in each
2.2 ASME Standard:
system may not be exact equivalents; therefore, each system
Boiler and Pressure Vessel Code Section VIII Para UW-51
shall be used independently of the other. Combining values
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2.3 SAE Standards:
from the two systems may result in non-conformance with the
SAE J1086 Practice for Numbering Metals and Alloys
standard. The inch-pound units shall apply unless the “M”
(UNS)
designation of this specification is specified in the order.
1.5 The following safety hazards statement pertains only to
the test method and the Supplementary Requirements of this
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specification. A specific warning statement is given in the
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.
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This specification is under the jurisdiction ofASTM Committee A01 on Steel, Available from American Society of Mechanical Engineers (ASME), ASME
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
A01.10 on Stainless and Alloy Steel Tubular Products. www.asme.org.
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Current edition approved Nov. 15, 2016. Published January 2017. DOI: 10.1520/ Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
A1098_A1098M-16. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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A1098/A1098M−16
3. Terminology 3.3.9 P —angle of the primary character unit (if any)
a
3.3.10 P —angle of the secondary character unit (if any)
3.1 For definitions of general terms used in this
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specification, refer to Ter
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