ASTM B626-10e2

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Designation:B626 −10
StandardSpecification 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.
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ε NOTE—The Si max for N06059 in Table 1 was corrected editorially in January 2012.
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ε NOTE—The Si max for R20033 in Table 1 was corrected editorially in March 2014.
1. Scope* 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification covers welded tubes made from the
B751 Specification for General Requirements for Nickel and
nickel and nickel-cobalt alloys (UNS N10001, UNS N10242,
Nickel Alloy Welded Tube
UNS N10665, UNS N12160, UNS N10629, UNS N10624,
E527 Practice for Numbering Metals and Alloys in the
UNS N10675, UNS N10276, UNS N06455, UNS N06007,
Unified Numbering System (UNS)
UNS N06975, UNS N08320, UNS N06985, UNS N06002,
UNS N06022, UNS N06030, UNS N06035, UNS N06058,
3. General Requirements
UNS N06059, UNS N06200, UNS N10362, UNS N06210,
3.1 Material furnished in accordance with this specification
UNS N08031, UNS R30556, UNS N06230, UNS N06686, and
2 shall conform to the applicable requirements of the current
UNS R20033) listed in Table 1 intended for heat exchanger
edition of Specification B751 unless otherwise provided
and condenser tubes and tubes for general corrosive service for
herein.
heat-resisting applications.
1 1 4. Classification
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 Five classes of tube are covered as follows:
mm) inclusive, in wall thickness. 4.1.1 Class IA—Welded, sized, solution annealed, and non-
destructively tested in accordance with 4.2.1.
1.3 The values stated in inch-pound units are to be regarded
4.1.2 Class IB—Welded, sized, and solution annealed.
as standard. The values given in parentheses are mathematical
4.1.3 Class IIA—Welded, cold worked, solution annealed,
conversions to SI units that are provided for information only
and nondestructively tested in accordance with 4.2.1.
and are not considered standard.
4.1.4 Class IIB—Welded, cold worked, and solution an-
1.4 This standard does not purport to address all of the
nealed.
safety concerns, if any, associated with its use. It is the
4.1.5 Class III—Welded, cold worked, solution annealed,
responsibility of the user of this standard to become familiar
and nondestructively tested in accordance with 4.2.2.
with all hazards including those identified in the appropriate
4.2 Nondestructive Tests:
Material Safety Data Sheet (MSDS) for this product/material
4.2.1 Class IA and Class IIA Tubes—Each finished tube
as provided by the manufacturer, to establish appropriate
shall be subjected to the hydrostatic test, the pneumatic test, or
safety and health practices, and determine the applicability of
the eddy current test at the manufacturer’s option.
regulatory limitations prior to use.
4.2.2 Class III Tubes—Each finished tube shall be subjected
to the pneumatic test and the eddy current test. Tubes larger
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than 1 ⁄2 in. (38.1 mm) in outside diameter may be subjected to
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This specification is under the jurisdiction of ASTM Committee B02 on
the hydrostatic test in lieu of the pneumatic test at the
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
manufacturer’s option.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved Oct. 1, 2010. Published October 2010. Originally
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approved in 1977. Last previous edition approved in 2006 as B626 – 06. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/B0626-10E02. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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New designations established in accordance with Practic E527 and SAE J1086, Standards volume information, refer to the standard’s Document Summary page on
Practice for Numbering Metals and Alloys (UNS). the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B626−10
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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 Cb Ta Ni+ Mg
max max max (Nb) (Nb) Mo
+Ta
Ni-Mo Alloys
N10001 remainder 1.0 26.0- 4.0-6.0 . 0.05 1.0 2.5 1.0 0.2- 0.04 0.03 . . .
max 30.0 max max max 0.4
N10665 remainder 1.0 26.0- 2.0 max . 0.02 0.10 1.0 1.0 . 0.04 0.03 . . .
max 30.0 max max max
N10675 65.0 min 1.0- 27.0- 1.0-3.0 3.0 0.01
...