ASTM B776-07

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:B776 −07
StandardSpecification for
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Hafnium and Hafnium Alloy Strip, Sheet, and Plate
This standard is issued under the fixed designation B776; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope manufacturer and purchaser, a lot shall be limited to the
product of an 8 h period for final continuous anneal, or to a
1.1 This specification covers two grades of wrought haf-
single furnace load for final batch anneal.
nium and hafnium alloy strip, sheet, and plate as follows:
1.1.1 Grade R1 for nuclear applications, and 3.2 Forms:
1.1.2 Grade R3 for commercial applications. 3.2.1 strip, n—a flat product, may be supplied in coil, less
than 6 in. (150 mm) in width and from0.005 to0.188in. (0.13
1.2 Unlessasingleunitisused,forexamplecorrosionmass
2 to 4.8 mm) in thickness.
gain in mg/dm , the values stated in either inch-pound or SI
units are to be regarded separately as standard. The values 3.2.2 sheet, n—a flat product 6 in. (150 mm) or more in
width and from 0.005 to 0.188 in. (0.13 to 4.8 mm) in
stated in each system are not exact equivalents; therefore each
system must be used independently of the other. SI values thickness.
cannot be mixed with inch-pound values.
3.2.3 plate, n—a flat product more than 0.188 in. (4.8 mm)
1.3 The following precautionary caveat pertains only to the in thickness.
test method portions of this specification. This standard does
not purport to address all of the safety concerns, if any,
4. Classification
associated with its use. It is the responsibility of the user of this
4.1 Thestrip,sheet,orplateistobefurnishedintwogrades
standard to establish appropriate safety and health practices
as follows:
and determine the applicability of regulatory limitations prior
4.1.1 Grade R1 (Nuclear) — Unalloyed.
to use.
4.1.2 Grade R3 (Commercial) — Unalloyed.
2. Referenced Documents
5. Ordering Information
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2.1 ASTM Standards:
5.1 Purchase orders for materials under this specification
E8Test Methods for Tension Testing of Metallic Materials
shall include the following information as applicable:
E21TestMethodsforElevatedTemperatureTensionTestsof
5.1.1 Quantity (weight or number of pieces),
Metallic Materials
5.1.2 Form (3.2) and dimensions,
E29Practice for Using Significant Digits in Test Data to
5.1.3 Grade (4.1),
Determine Conformance with Specifications
5.1.4 Lot definition for continuous anneal, if applicable
(3.1),
3. Terminology
5.1.5 Metallurgical condition, if not in the recrystallized
3.1 Lot Definition:
annealed condition (6.3),
3.1.1 lot,n—alotshallconsistofamaterialofthesamesize,
5.1.6 Chemical analysis of elements not listed (7.1.3),
shape,condition,andfinishproducedfromtheingotorpowder
5.1.7 Product analysis (7.1.1.1 and 7.1.3),
blend by the same reduction schedule and the same heat
5.1.8 Tensile test temperatures (8.1),
treatment parameters. Unless otherwise agreed upon between
5.1.9 Mechanical properties, for Grade R3 (8.1),
5.1.10 Corrosion properties and testing, (9.1 and 9.1.3),
1 5.1.11 Material condition and finish (12.1-12.5),
This specification is under the jurisdiction of ASTM Committee B10 on
Reactive and Refractory Metals and Alloys and is the direct responsibility of
5.1.12 Workmanship standards and methods of inspection
Subcommittee B10.02 on Zirconium and Hafnium.
(Section 13),
Current edition approved May 1, 2007. Published May 2007. Originally
5.1.13 Purchaser inspection (16.1),
approved in 1987. Last previous edition approved in 2006 as B776–06. DOI:
10.1520/B0776-07.
5.1.14 Rejection and referee (17.2),
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.15 Certification report (Section 18),
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.16 Product marking (Section 19), and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.1.17 Packaging and package marking (Section 20).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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B776−07
NOTE 1—A typical ordering description is as follows: twenty-eight TABLE 2 Check Analyses Limits
pieces hafnium plate, annealed; mechanically descaled and pickled; 0.158
Element Variations Under Min. or
by 6.000 in. thick by 18-in. long lengths; Grade R1; ASTM B776–07.
Over Max. %
Hydrogen 0.002
Nitrogen 0.01
6. Materials and Manufacture
Carbon 0.01
6.1 Material covered by this specification shall be made Zirconium 0.02
Iron and Chromium 0.025
from ingots that are produced by vacuum or plasma arc
Tin 0.05
me
...