ASTM B654-03

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: B 654 – 03
Standard Specification for
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Niobium-Hafnium Alloy Foil, Sheet, Strip, and Plate
This standard is issued under the fixed designation B 654; 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 3.1.4 plate—a flat product 6 in. (152.4 mm) or more in
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width and more than ⁄16 in. (4.76 mm) in thickness.
1.1 This specification covers niobium-hafnium-titanium al-
loy foil, sheet, strip, and plate.
4. Ordering Information
NOTE 1—Committee B10 has adopted “niobium” as the designation for
4.1 Orders for material under this specification shall include
Element 41, formerly named “columbium.”
the following information as applicable:
1.2 The material covered by this specification is R04295,
4.1.1 Type material (Section 1),
niobium-base alloy containing approximately 10 % hafnium
4.1.2 Quantityinnumberofpieces,dimensions,andweight,
and 1 % titanium.
4.1.3 Chemistry (see 6.3),
1.3 Except for dimensional tolerances in Table 4, the values
4.1.4 Temper designation (Section 8),
stated in inch-pound units are to be regarded as the standard.
4.1.5 Permissible overshipments (see 10.3),
The values given in parentheses are for information only.
4.1.6 Quality and finish (see 12.2),
1.4 The following safety hazards caveat pertains only to the
4.1.7 Sampling (see 13.2),
test methods portion, Section 15, of this specification: This
4.1.8 Elevated temperature mechanical properties (see
standard does not purport to address all of the safety problems,
15.4),
if any, associated with its use. It is the responsibility of the user
4.1.9 Required reports (Section 16),
of this standard to establish appropriate safety and health
4.1.10 Inspection (Section 17), and
practices and determine the applicability of regulatory limita-
4.1.11 Packaging (Section 21).
tions prior to use.
5. Materials and Manufacture
2. Referenced Documents
5.1 Material covered by this specification shall be made
2.1 ASTM Standards:
from ingots conforming to Specification B 652, that are pro-
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B 652 Specification for Niobium-Hafnium Alloy Ingots
duced by vacuum-arc melting, or electron-beam furnace melt-
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E 8 Test Methods forTensionTesting of Metallic Materials
ing, or a combination of the two.
E 29 Practice for Using Significant Digits in Test Data to
5.2 The various niobium-hafnium alloy mill products cov-
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Determine Conformance with Specifications
ered by this specification are produced by the conventional
extrusion, forging, and rolling equipment normally available in
3. Terminology
metal-working plants.
3.1 Definitions of Terms Specific to This Standard:
6. Chemical Composition
3.1.1 foil—a flat product less than 6 in. (152.4 mm) wide
and less than 0.005 in. (0.13 mm) in thickness.
6.1 The niobium-hafnium alloy ingots and billets for con-
3.1.2 sheet—a flat product 6 in. (152.4 mm) or more in
version to finished products covered by this specification shall
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width and from 0.005 in. (0.13 mm) to ⁄16 in. (4.76 mm) in
conform to the requirements for chemical composition as
thickness.
prescribed inTable 1.Analysis for elements, not listed inTable
3.1.3 strip—aflatproduct,maybesuppliedincoil,lessthan
1 and not normally expected in niobium hafnium alloy, shall
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6 in. (152.4 mm) wide and from 0.005 in. (0.13 mm) to ⁄16 in.
not be required unless specified at time of purchase.
(4.76 mm) in thickness.
6.2 The manufacturer’s ingot analysis shall be considered
the chemical analysis for products supplied under this specifi-
cation.
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This specification is under the jurisdiction of Committee B10 on Reactive and
6.3 Upon request of the purchaser at the time of purchase,
Refractory Metals and Alloys and is the direct responsibility of Subcommittee
the seller shall furnish a report certifying the values of the
B10.03 on Niobium and Tantalum.
Current edition approved May 10, 2003. Published May 2003. Originally
interstitial elements (carbon, oxygen, nitrogen, hydrogen) as
approved in 1979. Last previous edition approved in 1999 as B 654 – 92 (1999).
specified in Table 2 for each lot of material supplied. A lot is
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Annual Book of ASTM Standards, Vol 02.04.
3 defined as that material produced from one ingot, heat treated
Annual Book of ASTM Standards, Vol 03.01.
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Annual Book of ASTM Standards, Vol 14.02. at the same time.
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 superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
B654–03
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