ASTM B626-06

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Designation: B626 – 06
Standard Specification for
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Welded Nickel and Nickel-Cobalt Alloy Tube
This standard is issued under the fixed designation B626; 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* 3. General Requirements
1.1 This specification covers welded tubes made from the 3.1 Material furnished in accordance with this specification
nickel and nickel-cobalt alloys (UNS N10001, UNS N10242, shall conform to the applicable requirements of the current
UNS N10665, UNS N12160, UNS N10629, UNS N10624, edition of Specification B751 unless otherwise provided
UNS N10675, UNS N10276, UNS N06455, UNS N06007, herein.
UNS N06975, UNS N08320, UNS N06985, UNS N06002,
4. Classification
UNS N06022, UNS N06030, UNS N06035, UNS N06058,
UNS N06059, UNS N06200, UNS N06210, UNS N08031, 4.1 Five classes of tube are covered as follows:
4.1.1 Class IA—Welded, sized, solution annealed, and non-
UNS R30556, UNS N06230, UNS N06686, and UNS
R20033)* listed in Table 1 intended for heat exchanger and destructively tested in accordance with 4.2.1.
4.1.2 Class IB—Welded, sized, and solution annealed.
condenser tubes and tubes for general corrosive service for
heat-resisting applications. 4.1.3 Class IIA—Welded, cold worked, solution annealed,
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and nondestructively tested in accordance with 4.2.1.
1.2 This specification covers tube ⁄8 to 3 ⁄2 in. (3.2 to 88.9
mm) in outside diameter and 0.015 to 0.148 in. (0.41 to 3.7 4.1.4 Class IIB—Welded, cold worked, and solution an-
nealed.
mm) inclusive, in wall thickness.
1.3 The values stated in inch-pound units are to be regarded 4.1.5 Class III—Welded, cold worked, solution annealed,
and nondestructively tested in accordance with 4.2.2.
as the standard. The values given in parentheses are for
information only. 4.2 Nondestructive Tests:
4.2.1 Class IA and Class IIA Tubes—Each finished tube
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the shall be subjected to the hydrostatic test, the pneumatic test, or
the eddy current test at the manufacturer’s option.
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate 4.2.2 Class III Tubes—Each finished tube shall be subjected
to the pneumatic test and the eddy current test. Tubes larger
Material Safety Data Sheet (MSDS) for this product/material
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than 1 ⁄2 in. (38.1 mm) in outside diameter may be subjected to
as provided by the manufacturer, to establish appropriate
safety and health practices, and determine the applicability of the hydrostatic test in lieu of the pneumatic test at the
manufacturer’s option.
regulatory limitations prior to use.
2. Referenced Documents 5. Ordering Information
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5.1 It is the responsibility of the purchaser to specify all
2.1 ASTM Standards:
B751 Specification for General Requirements for Nickel requirements that are necessary for material ordered under this
specification. Examples of such requirements include, but are
and Nickel Alloy Welded Tube
E527 Practice for Numbering Metals and Alloys in the not limited to the following:
5.1.1 Alloy (Table 1),
Unified Numbering System (UNS)
5.1.2 Class (see 4),
5.1.3 Quantity (feet or number of lengths),
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This specification is under the jurisdiction of ASTM Committee B02 on
5.1.4 Size (outside diameter and average wall thickness),
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
5.1.5 Length (cut or random),
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved June 1, 2006. Published June 2006. Originally
5.1.6 Certification—State if certification or a report of test
approved in 1977. Last previous edition approved in 2004 as B626 - 04. DOI:
results is required,
10.1520/B0626-06.
5.1.7 Purchaser Inspection—State which tests or inspec-
* New designations established in accordance with Practic E527 and SAE J1086,
tions are to be witnessed,
Practice for Numbering Metals and Alloys (UNS).
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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.
*A Summary of Changes section appears at the end of this standard.
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B626 – 06
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TABLE 1 Chemical Requirements
Composition Limits, %
Ni Cr Mo Fe W C Si Co Mn V P S Ti Cu Cb Al Zr La N B
...