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ASTM B924-02(2022)

(Specification)

Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral Fins

Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral Fins

ABSTRACT
This specification covers seamless and welded nickel alloy tubing with either or both external and internal surfaces have been modified by cold forming. The cold forming process produces an enhanced surface for improved heat transfer in the tubing that makes these ideal for use in surface condensers, evaporators, heat exchangers and other similar heat transfer apparatus. The material properties and manufacturing conditions of the seamless and welded materials should conform accordingly.
SCOPE
1.1 This specification2 describes seamless and welded nickel alloy tubing on which the external or internal surface, or both, has been modified by a cold forming process to produce an integral enhanced surface, for improved heat transfer. The tubes are used in surface condensers, evaporators, heat exchangers and similar heat transfer apparatus in unfinned end diameters up to and including 1 in. (25.4 mm).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 The following precautionary statement pertains to the test method portion only: Section 10 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory requirements prior to use.  
1.4 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.

General Information

Status
Published
Publication Date
30-Sep-2022
ICS
77.120.40 - Nickel, chromium and their alloys
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.07 - Refined Nickel and Cobalt and Their Alloys
Current Stage
Ref Project

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ASTM B924-02(2022) - Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral FinsASTM B924-02(2022) - Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral Fins
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ASTM B924-02(2022) - Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral Fins
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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.
Designation:B924 −02 (Reapproved 2022)
Standard Specification for
Seamless and Welded Nickel Alloy Condenser and Heat
1
Exchanger Tubes With Integral Fins
This standard is issued under the fixed designation B924; 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 2. Referenced Documents
3
2
2.1 ASTM Standards:
1.1 This specification describes seamless and welded
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
nickel alloy tubing on which the external or internal surface, or
Alloys, and Ferroalloys
both, has been modified by a cold forming process to produce
B163 Specification for Seamless Nickel and Nickel Alloy
an integral enhanced surface, for improved heat transfer. The
Condenser and Heat-Exchanger Tubes
tubes are used in surface condensers, evaporators, heat ex-
B167 Specification for Standard Specification for Nickel-
changers and similar heat transfer apparatus in unfinned end
Chromium-Aluminum Alloys (UNS N06699) Nickel-
diameters up to and including 1 in. (25.4 mm).
Chromium-Iron Alloys (UNS N06600, N06601, N06603,
N06690,N06693,N06025,N06045,andN06696)Nickel-
1.2 The values stated in inch-pound units are to be regarded
Chromium-Cobalt-Molybdenum Alloy (UNS N06617)
as standard. The values given in parentheses are mathematical
Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674)
conversions to SI units that are provided for information only
and Nickel-Chromium-Molybdenum-Copper Alloy (UNS
and are not considered standard.
N06235) Seamless Pipe and Tube
1.3 The following precautionary statement pertains to the
B407 Specification for Nickel-Iron-Chromium Alloy Seam-
test method portion only: Section 10 of this specification. This
less Pipe and Tube
standard does not purport to address all of the safety concerns,
B423 Specification for Nickel-Iron-Chromium-
if any, associated with its use. It is the responsibility of the user
Molybdenum-Copper Alloy Seamless Pipe and Tube
of this standard to become familiar with all hazards including
B444 Specification for Nickel-Chromium-Molybdenum-
those identified in the appropriate Safety Data Sheet (SDS) for ColumbiumAlloys (UNS N06625 and UNS N06852) and
Nickel-Chromium-Molybdenum-Silicon Alloy (UNS
this product/material as provided by the manufacturer, to
N06219) Pipe and Tube
establish appropriate safety, health, and environmental
B468 Specification for Welded UNS N08020 Alloy Tubes
practices, and determine the applicability of regulatory re-
B515 SpecificationforWeldedNickel-Iron-ChromiumAlloy
quirements prior to use.
Tubes
1.4 This international standard was developed in accor-
B516 Specification for Welded Nickel-Chromium-
dance with internationally recognized principles on standard-
Aluminum Alloy (UNS N06699) and Nickel-Chromium-
ization established in the Decision on Principles for the
Iron Alloy (UNS N06600, UNS N06601, UNS N06603,
Development of International Standards, Guides and Recom-
UNS N06025, UNS N06045, UNS N06690, and UNS
mendations issued by the World Trade Organization Technical
N06693) Tubes
Barriers to Trade (TBT) Committee.
B622 Specification for Seamless Nickel and Nickel-Cobalt
Alloy Pipe and Tube
B626 Specification for Welded Nickel and Nickel-Cobalt
Alloy Tube
B674 Specification for Nickel-Iron-Chromium-
Molybdenum and Iron-Nickel-Chromium-Molybdenum-
1
Copper Welded Tube
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 1, 2022. Published November 2022. Originally
3
approved in 2002. Last previous edition approved in 2017 as B924 – 02 (2017). For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/B0924-02R22. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SB-924 in Section II of that Code. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B924−02 (2022)
B676 Specification for UNS N08367 Welded Tube
B677 Specification for Nickel-Iron-Chromium-
Molybdenum and Iron-Nickel-Chromium-Molybdenum-
Copper Seamless Pipe and Tube
B690 Specification for Iron-Nick
...

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1.1 These test methods cover two tests as follows:  
1.1.1 Method A, Ferric Sulfate-Sulfuric Acid Test (Sections 3 – 10, inclusive)—This test method describes the procedure for conducting the boiling ferric sulfate—50 % sulfuric acid test which measures the susceptibility of certain nickel-rich, chromium-bearing alloys to intergranular corrosion (see Terminology G193), which may be encountered in certain service environments. The uniform corrosion rate obtained by this test method, which is a function of minor variations in alloy composition, may easily mask the intergranular corrosion components of the overall corrosion rate on alloys N10276, N06022, N06059, and N06455.  
1.1.2 Method B, Mixed Acid-Oxidizing Salt Test (Sections 11 – 18, inclusive)—This test method describes the procedure for conducting a boiling 23 % sulfuric + 1.2 % hydrochloric + 1 % ferric chloride + 1 % cupric chloride test which measures the susceptibility of certain nickel-rich, chromium-bearing alloys to display a step function increase in corrosion rate when there are high levels of grain boundary precipitation.  
1.2 The purpose of these two test methods is to detect susceptibility to intergranular corrosion as influenced by variations in processing or composition, or both. Materials shown to be susceptible may or may not be intergranularly corroded in other environments. This must be established independently by specific tests or by service experience.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3.1 Exception—Some desired corrosion rate units in 8.1.1 are given in inch-pound units.  
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