ASTM B626-01

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 626 – 01
Standard Specification for
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Welded Nickel and Nickel-Cobalt Alloy Tube
This standard is issued under the fixed designation B 626; 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 4.1.4 Class IIB—Welded, cold worked, and solution an-
nealed.
1.1 This specification covers welded tubes made from the
4.1.5 Class III—Welded, cold worked, solution annealed,
nickel and nickel-cobalt alloys (UNS N10001, UNS N10242,
and nondestructively tested in accordance with 4.2.2.
UNS N10665, UNS N12160, UNS N10629, UNS N10624,
4.2 Nondestructive Tests:
UNS N10675, UNS N10276, UNS N06455, UNS N06007,
4.2.1 Class IA and Class IIA Tubes—Each finished tube
UNS N06975, UNS N08320, UNS N06985, UNS N06002,
shall be subjected to the hydrostatic test, the pneumatic test, or
UNS N06022, UNS N06030, UNS N06058, UNS N06059,
the eddy current test at the manufacturer’s option.
UNS N06200, UNS N06210, UNS N08031, UNS R30556,
4.2.2 Class III Tubes—Each finished tube shall be subjected
UNS N06230, UNS N06686, and UNS R20033)* listed in
to the pneumatic test and the eddy current test. Tubes larger
Table 1 intended for heat exchanger and condenser tubes and
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than 1 ⁄2 in. (38.1 mm) in outside diameter may be subjected to
tubes for general corrosive service for heat-resisting applica-
the hydrostatic test in lieu of the pneumatic test at the
tions.
manufacturer’s option.
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1.2 This specification covers tube ⁄8 to 3 ⁄2in. (3.2 to 88.9
mm) in outside diameter and 0.015 to 0.148 in. (0.41 to 3.7
5. Ordering Information
mm) inclusive, in wall thickness.
5.1 It is the responsibility of the purchaser to specify all
1.3 The values stated in inch-pound units are to be regarded
requirements that are necessary for the safe and satisfactory
as the standard. The values given in parentheses are for
performance of material ordered under this specification.
information only.
Examples of such requirements include, but are not limited to
2. Referenced Documents the following:
5.1.1 Alloy (Table 1),
2.1 ASTM Standards:
5.1.2 Class (see 4),
B 751 Specification for General Requirements for Nickel
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5.1.3 Quantity (feet or number of lengths),
and Nickel Alloy Welded Tube
5.1.4 Size (outside diameter and average wall thickness),
3. General Requirements—
5.1.5 Length (cut or random),
5.1.6 Certification—State if certification or a report of test
3.1 Material furnished in accordance with this specification
results is required,
shall conform to the applicable requirements of the current
5.1.7 Purchaser Inspection—State which tests or inspec-
edition of Specification B 751 unless otherwise provided
tions are to be witnessed,
herein.
5.1.8 Ends—Plain ends cut and deburred will be furnished,
4. Classification
unless otherwise specified, and
5.1.9 Samples for Product (Check) Analysis—State whether
4.1 Five classes of tube are covered as follows:
samples shall be furnished.
4.1.1 Class IA—Welded, sized, solution annealed, and non-
destructively tested in accordance with 4.2.1.
6. Materials and Manufacture
4.1.2 Class IB—Welded, sized, and solution annealed.
6.1 The tubes shall be made from flat-rolled alloy by an
4.1.3 Class IIA—Welded, cold worked, solution annealed,
automatic welding process with no addition of filler metal.
and nondestructively tested in accordance with 4.2.1.
6.2 Subsequent to welding and prior to final heat treatment,
Class II and Class III tubes shall be cold worked either in both
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This specification is under the jurisdiction of ASTM Committee B02 on
weld and base metal or in weld metal only. The method and
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
amount of cold working may be specified by the purchaser.
B02.07 on Refined Nickel and Cobalt and Their Alloys.
Current edition approved May 10, 2001. Published July 2001. Originally
When cold drawn, the purchaser may specify the minimum
published as B 626 – 77. Last previous edition B 626 – 00.
amount of reduction in cross-sectional area or wall thickness,
* New designations established in accordance with ASTM E 527 and SAE
or both.
J1086, Practice for Numbering Metals and Alloys (UNS).
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Annual Book of ASTM Standards, Vol 02.04. 6.3 All tubes shall be furnished in the solution annealed and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B 626
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TAB
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