ASTM B674-04

Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube

SCOPE
1.1 This specification covers UNS N08904, UNS N08925,* 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 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are for information only.
1.4 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 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2004
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.07 - Refined Nickel and Cobalt and Their Alloys

Relations

• Replaces: ASTM B674-96(2002)e1 - Standard Specification for UNS N08904, UNS N08925, and UNS N08926 Welded Tube
• Effective Date: 01-Oct-2004
• Replaced By: ASTM B674-05 - Standard Specification for UNS N08925, UNS N08354, and UNS N08926 Welded Tube
• Effective Date: 01-Jun-2005
• Referred By: ASTM B924-02(2022) - Standard Specification for Seamless and Welded Nickel Alloy Condenser and Heat Exchanger Tubes With Integral Fins
• Effective Date: 01-Oct-2004
• Referred By: ASTM B366/B366M-23 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• Effective Date: 01-Oct-2004
• Referred By: ASTM B751-21 - Standard Specification for General Requirements for Nickel and Nickel Alloy Welded Tube
• Effective Date: 01-Oct-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 674 – 04
Standard Specification for
UNS N08904, UNS N08925, UNS N08354, and UNS N08926
1
Welded Tube
This standard is issued under the fixed designation B 674; 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.
1. Scope 3.1.3 Size (outsize diameter, minimum or average wall
thickness),
1.1 This specification covers UNS N08904, UNS N08925,*
3.1.4 Length (random or specific),
UNS N08354, and UNS N08926 welded tube for general
3.1.5 Class, and
corrosion applications.
3.1.6 ASTM designation.
1.2 This specification covers outside diameter and nominal
3.1.7 Product Analysis—State if required.
wall tube.
1 3.1.8 Certification—State if a certification or a report of test
1.2.1 The tube sizes covered by this specification are ⁄8 to 5
results is required.
in. (3.2 to 127 mm) in outside diameter and 0.015 to 0.320 in.
3.1.9 Purchaser Inspection—State which tests or inspec-
(0.38 to 8.13 mm), inclusive, in wall thickness.
tions are to be witnessed, if any (see Tables 1 and 2).
1.3 The values stated in inch-pound units are to be regarded
as the standard. The values stated in parentheses are for
4. Materials and Manufacture
information only.
4.1 Tube shall be made from flat-rolled alloy by an auto-
1.4 This standard does not purport to address all of the
matic welding process with no addition or filler metal. Subse-
safety concerns, if any, associated with its use. It is the
quent to welding and prior to final annealing, the material shall
responsibility of the user of this standard to become familiar
be cold-worked in either the weld metal only or both weld and
with all hazards including those identified in the appropriate
base metal.
Material Safety Data Sheet for this product/material as pro-
vided by the manufacturer, to establish appropriate safety and
NOTE 1—The recommended heat treatment shall consist of heating to a
health practices, and determine the applicability of regulatory temperature of 1985 to 2100°F (1085 to 1150°C) for UNS N08904, 1975
to 2150°F (1080 to 1180°C) for UNS N08354, or 2010 to 2100°F (1100
limitations prior to use.
to 1150°C) for UNS N08925 and UNS N08926, followed by quenching in
water or rapid cooling by other means.
2. Referenced Documents
2
4.2 Tube shall be furnished with oxide removed. When
2.1 ASTM Standards:
B 751 Specification for General Requirements for Nickel bright annealing is used, descaling is not necessary.
and Nickel Alloy Welded Tube
5. Chemical Composition
3. Ordering Information
5.1 The material shall conform to the composition limits
specified in Table 1. One test is required for each lot as defined
3.1 Orders for material to this specification should include
the following information: in Specification B 751.
5.2 If a product analysis is performed, it shall meet the
3.1.1 Quantity (feet or number of lengths),
3.1.2 UNS number, chemistry limits prescribed in Table 1, subject to the analysis
tolerances of Specification B 751.
6. Mechanical and Other Properties
1
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee 6.1 Mechanical Properties—The material shall conform to
B02.07 on Refined Nickel and Cobalt and Their Alloys.
the mechanical property requirements specified inTable 2. One
Current edition approved Oct. 1, 2004 . Published November 2004. Originally
test is required for each lot as defined in Specification B 751.
e1
approved in 1980. Last previous edition approved in 2002 as B 674 – 96 (2002) .
6.2 Flattening Test—Aflattening test shall be made on each
* New designation established in accordance with Practice E 527 and SAE
J1086, Practice for Numbering Metals and Alloys (UNS).
end of one tube per lot. Superficial ruptures resulting from
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
surface imperfections shall not be cause for rejection.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.3 Flange Test—Aflange test shall be made on each end of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. one tube per lot.
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1

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B674–04
TABLE 1 Chemical Requirements
Composition, %
Element
UNS N08904 UNS N08925 UNS N08354 UNS N08926
Carbon, max 0.020 0.020 0.030 0.020
Manganese, max 2.00 1.00 1.00 2.00
Phosphorus, max 0.045 0.045 0.030 0.03
Sulfur, max 0.035 0.030 0.010 0.01
Silicon, max 1.00 0.50 1.00 0.5
Nickel 23.0 to 28.
...