ASTM B737-01
(Specification)Standard Specification for Hot-Rolled and/or Cold-Finished Hafnium Rod and Wire
Standard Specification for Hot-Rolled and/or Cold-Finished Hafnium Rod and Wire
SCOPE
1.1 This specification covers hot- or cold-worked hafnium rod and wire, or both.
1.2 This specification contains two material grades, one specifically for nuclear applications (Grade R1) and one for commercial applications for alloying (Grade R3).
1.3 The products covered include the following:
1.3.1 Rod 3/8 to 1.0 in. (9.5 to 25.4 mm) in diameter.
1.3.2 Wire less than 3/8 in. (9.5 mm) in diameter.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
1.5 This standard does not purport to address the safety problems 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 737 – 01
Standard Specification for
1
Hot-Rolled and/or Cold-Finished Hafnium Rod and Wire
This standard is issued under the fixed designation B737; 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 (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Chemical Requirements
1. Scope
Composition, Weight %
1.1 This specification covers hot- or cold-worked hafnium
Alloying
rod and wire, or both.
Nuclear Grade
Grade
Element
1.2 This specification contains two material grades, one
Grade R1 Grade R3
specifically for nuclear applications (Grade R1) and one for
Aluminum 0.010 0.050
commercial applications for alloying (Grade R3).
Carbon 0.015 0.025
1.3 The products covered include the following:
Chromium 0.010 0.050
3
1.3.1 Rod ⁄8 to 1.0 in. (9.5 to 25.4 mm) in diameter.
Copper 0.010 .
3
Hydrogen 0.0025 0.0050
1.3.2 Wire less than ⁄8 in. (9.5 mm) in diameter.
Iron 0.050 0.0750
1.4 The values stated in inch-pound units are to be regarded
Molybdenum 0.0020 .
as the standard. The SI units given in parentheses are for
Nickel 0.0050 .
Niobium 0.010 .
information only.
Nitrogen 0.010 0.0150
1.5 This standard does not purport to address all of the
Oxygen 0.040 0.130
safety concerns, if any, associated with its use. It is the
Silicon 0.010 0.050
Tantalum 0.020 .
responsibility of the user of this standard to establish appro-
Tin 0.0050 .
priate safety and health practices and determine the applica-
Titanium 0.010 0.050
bility of regulatory limitations prior to use.
Tungsten 0.0150 0.0150
Uranium 0.0010 .
Vanadium 0.0050 .
2. Referenced Documents
AA
Zirconium
2.1 ASTM Standards:
Hafnium balance balance
2
E8 TestMethodsforTensionTestingofMetallicMaterials A
Zirconium shall be reported. Acceptable levels shall be established by mutual
agreement between purchaser and producer.
E21 Test Methods for Elevated Temperature Tension Tests
2
of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to
between manufacturer and purchaser, a lot shall be limited to
3
Determine Conformance with Specifications
the product of an 8 h period for final continuous anneal, or to
a single furnace load for final batch anneal.
3. Terminology
3.1.4 sponge—a lot shall consist of a single blend produced
3.1 Lot Definitions:
at one time.
3.1.1 castings—a lot shall consist of all castings produced
3.1.5 weld fittings—definitionistobemutuallyagreedupon
from the same pour.
between manufacturer and the purchaser.
3.1.2 ingot—no definition required.
3.1.3 rounds, flats, tubes, and wrought powder metallurgical
4. Ordering Information
products (single definition, common to nuclear and non-
4.1 Purchase orders for material under this specification
nuclear standards)—a lot shall consist of a material of the
shall include the following information as required to ad-
samesize,shape,condition,andfinishproducedfromthesame
equately describe the desired material:
ingot or powder blend by the same reduction schedule and the
4.1.1 Quantity (weight or number of pieces),
same heat treatment parameters. Unless otherwise agreed
4.1.2 Name of material,
4.1.3 Form (rod, wire),
4.1.4 Metallurgical condition (Section 6),
1
This specification is under the jurisdiction of ASTM Committee B10 on
4.1.5 Finish (Section 12),
Reactive and Refractory Metals and Alloys and is the direct responsibility of
4.1.6 Applicable dimensions (diameter and length),
Subcommittee B10.02 on Zirconium and Hafnium.
4.1.7 Grade (Table 1), and
Current edition approved Nov. 10, 2001. Published January 2002. Originally
published as B737–84. Last previous edition B737–90(2000).
4.1.8 ASTM designation and year of issue.
2
Annual Book of ASTM Standards, Vol 03.01.
3
Annual Book of ASTM Standards, Vol 14.02. NOTE 1—A typical ordering description is as follows: 500 lb hafnium
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B737–01
rod,annealed;mechanicallydescaledandpickled;0.375in.diameterby6
8.2 The yield strength shall be determined by the offset
in. minimum random lengths; Grade R1; ASTM Specification B737.
(0.2%) method as prescribed in Test MethodsE8.
8.3 The tensile properties shall be determined using a strain
4.2 In addition to the data specified in 4.1, the following
rate of 0.003 to 0.007 in./in.·min through the yield strength.
optionsandpointsofagreementbetweenthemanufacturerand
After the yield strength has been exceeded, the cross-head
the purchaser shall be specified on the purchase order if
speed shall be increased to approximately 0.05 in./in.·min to
required:
failure.
4.2.1 Mecha
...
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