ASTM B674-05(2011)
(Specification)Standard Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Tube
Standard Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Tube
ABSTRACT
This specification covers the standard for UNS N08923, UNS N0835, and UNS N08926 welded tube for general corrosion applications. The tubes shall be manufactured from flat-rolled alloy by an automatic welding process with no addition of filler metal. The tubes shall also undergo cold-working subsequent to welding and prior to final heat treatment. Mechanical properties such as tensile strength, yield strength, and elongation shall be examined accordingly. Each specimen shall also be subjected to a flattening test, flange test, and nondestructive testing such as hydrostatic, pneumatic, eddy current, ultrasonic, leak, and electric test.
SCOPE
1.1 This specification covers UNS N08925,* UNS N08354, and UNS N08926 welded tube for general corrosion applications.
1.2 This specification covers outside diameter and nominal wall tube.
1.2.1 The tube sizes covered by this specification are 1/8 to 5 in. (3.2 to 127 mm) in outside diameter and 0.015 to 0.320 in. (0.38 to 8.13 mm), inclusive, in wall thickness.
1.3 ASTM International has adopted definitions whereby some grades, such as UNS N08904, previously in this specification were recognized as stainless steels, because those grades have iron as the largest element by mass percent. Such grades are under the oversight of ASTM Committee A01 and its subcommittees. The products of N08904 previously covered in this specification are now covered by Specification A249/A249M.
1.4 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.
1.5 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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation:B674 −05(Reapproved2011)
Standard Specification for
UNS N08925, UNS N08354, and UNS N08926 Welded Tube
This standard is issued under the fixed designation B674; 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
1.1 This specification covers UNS N08925,* UNS N08354, 2.1 ASTM Standards:
and UNS N08926 welded tube for general corrosion applica- A249/A249M Specification for Welded Austenitic Steel
tions. Boiler, Superheater, Heat-Exchanger, and Condenser
Tubes
1.2 This specification covers outside diameter and nominal
B751 Specification for General Requirements for Nickel and
wall tube.
Nickel Alloy Welded Tube
1.2.1 The tube sizes covered by this specification are ⁄8 to 5
E527 Practice for Numbering Metals and Alloys in the
in. (3.2 to 127 mm) in outside diameter and 0.015 to 0.320 in.
Unified Numbering System (UNS)
(0.38 to 8.13 mm), inclusive, in wall thickness.
3. Ordering Information
1.3 ASTM International has adopted definitions whereby
some grades, such as UNS N08904, previously in this speci-
3.1 Orders for material to this specification should include
fication were recognized as stainless steels, because those
the following information:
grades have iron as the largest element by mass percent. Such
3.1.1 Quantity (feet or number of lengths),
grades are under the oversight of ASTM Committee A01 and
3.1.2 UNS number,
itssubcommittees.TheproductsofN08904previouslycovered
3.1.3 Size (outsize diameter, minimum or average wall
in this specification are now covered by Specification A249/
thickness),
A249M.
3.1.4 Length (random or specific),
3.1.5 Class, and
1.4 The values stated in inch-pound units are to be regarded
3.1.6 ASTM designation.
as standard. The values given in parentheses are mathematical
3.1.7 Product Analysis—State if required.
conversions to SI units that are provided for information only
3.1.8 Certification—State if a certification or a report of test
and are not considered standard.
results is required.
1.5 This standard does not purport to address all of the
3.1.9 Purchaser Inspection—State which tests or inspec-
safety concerns, if any, associated with its use. It is the
tions are to be witnessed, if any (see Tables 1 and 2).
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
4. Materials and Manufacture
Material Safety Data Sheet (MSDS) for this product/material
4.1 Tube shall be made from flat-rolled alloy by an auto-
as provided by the manufacturer, to establish appropriate
matic welding process with no addition or filler metal. Subse-
safety and health practices, and determine the applicability of
quent to welding and prior to final annealing, the material shall
regulatory limitations prior to use.
be cold-worked in either the weld metal only or both weld and
base metal.
This specification is under the jurisdiction of ASTM Committee B02 on
NOTE 1—The recommended heat treatment shall consist of heating to a
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
temperature of 1975 to 2150°F (1080 to 1180°C) for UNS N08354 or
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved May 1, 2011. Published May 2011. Originally
approved in 1980. Last previous edition approved in 2005 as B674 – 05. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/B0674-05R11. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
* NewdesignationestablishedinaccordancewithPracticeE527andSAEJ1086, Standards volume information, refer to the standard’s Document Summary page on
Practice for Numbering Metals and Alloys (UNS). the ASTM website.
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