ASTM B776-01
(Specification)Standard Specification for Hafnium and Hafnium Alloy Strip, Sheet, and Plate
Standard Specification for Hafnium and Hafnium Alloy Strip, Sheet, and Plate
SCOPE
1.1 This specification covers two grades of hafnium strip, sheet, and plate, one specifically for nuclear applications (Grade R1) and one for commercial applications for alloying (Grade R3).
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: B 776 – 01
Standard Specification for
1
Hafnium and Hafnium Alloy Strip, Sheet, and Plate
This standard is issued under the fixed designation B 776; 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.
TABLE 1 Chemical Requirements
1. Scope
Composition, weight
1.1 This specification covers two grades of hafnium strip,
Elements
Grade R1 Grade R3
sheet, and plate, one specifically for nuclear applications
(Grade R1) and one for commercial applications for alloying Aluminum 0.010 0.050
Carbon 0.015 0.025
(Grade R3).
Chromium 0.010 0.050
1.2 The values stated in inch-pound units are to be regarded
Copper 0.010 .
as the standard. The values given in parentheses are for Hydrogen 0.0025 0.0050
Iron 0.050† 0.0750
information only.
Molybdenum 0.0020 .
1.3 This standard does not purport to address all of the
Nickel 0.0050 .
safety concerns, if any, associated with its use. It is the Niobium 0.010 .
Nitrogen 0.010 0.015
responsibility of the user of this standard to establish appro-
Oxygen 0.040 0.130
priate safety and health practices and determine the applica-
Silicon 0.010 0.050
bility of regulatory limitations prior to use. Tantalum 0.020 .
Tin 0.0050 .
Titanium 0.010 0.050
2. Referenced Documents
Tungsten 0.0150 0.0150
2.1 ASTM Standards: Uranium 0.0010 .
2
Vanadium 0.0050 .
E 8 Test Methods for Tension Testing of Metallic Materials
AA
Zirconium
E 21 Test Methods for Elevated Temperature Tension Tests
Hafnium balance balance
2
of Metallic Materials
A
Zirconium shall be reported. Acceptable levels shall be established by mutual
E 29 Practice for Using Significant Digits in Test Data to
agreement between purchaser and producer.
3
† Editorially corrected.
Determine Conformance with Specifications
3. Terminology
5.1.1 Quantity (weight or number of pieces),
3.1 Definitions of Terms Specific to This Standard:
5.1.2 Number of material,
3.1.1 lot—a lot shall consist of all material of the same mill
5.1.3 Form (strip, sheet, plate),
thickness, shape, and condition produced from the same ingot
5.1.4 Metallurgical condition (6.2),
by the same reduction schedule and the same final heat-treating
5.1.5 Finish (Section 11),
conditions.
5.1.6 Applicable dimensions (thickness, width, and length),
5.1.7 Grade (Table 1), and
4. Classification
5.1.8 ASTM designation and year of issue.
4.1 The strip, sheet, or plate is to be furnished in one of the
NOTE 1—A typical ordering description is as follows: twenty-eight
two grades shown in Table 1.
pieces hafnium plate, annealed; mechanically descaled and pickled; 0.158
in. by 6.000 in. thick by 18-in. long lengths; Grade R1; ASTM B776– ___.
5. Ordering Information
5.2 In addition to the data specified in 5.1, the following
5.1 Purchase orders for material under this specification
options and points of agreement between the manufacturer and
shall include the following information as required to ad-
the purchaser shall be specified on the purchase order if
equately describe the desired material:
required:
5.2.1 Mechanical test temperature (see 8.1),
5.2.2 Tolerances (Section 10),
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This specification is under the jurisdiction of ASTM Committee B10 on
5.2.3 Workmanship standards (Section 11),
Reactive and Refractory Metals and Alloysand is the direct responsibility of
Subcommittee B10.02 on Zirconium and Hafnium.
5.2.4 Special or alternate tests (Sections 8 and 14),
Current edition approved May 10, 2001. Published July 2001. Originally
5.2.5 Inspection (Section 16),
published as B 776 – 87. Last previous edition B 776 – 91 (1995).
2 5.2.6 Corrosion testing (Section 9),
Annual Book of ASTM Standards, Vol 03.01.
3
Annual Book of ASTM Standards, Vol 14.02. 5.2.7 Zirconium analysis requirements (Table 1), and
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B 776
TABLE 3 Mechanical Properties
5.2.8 The isotopic hafnium composition and its analysis, if
required, shall be mutually agreed upon by the purchaser and Tensile Yield Elongation,
Strength, Strength, (min %)
producer.
Test
Grade Condition min ksi min ksi in
Temperature
(MPa) (MPa) 2 in.
6. Materials and Manufacture
(50 mm)
6.1 The sheet, strip, or plate covered by this specification
Longitudinal:
shall be formed with conventional forging and rolling equip- R1 annealed RT 58 (400) 22 (151) 20
annealed 600°F (316°C) 25 (172) 11 (83) 25
ment found in primary ferrous and nonferrous metal plants, and
made from ingots produced by vacuum melting in electron
Transverse:
R1 annealed RT 45 (310) 25 (17
...
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