ASTM B365-98(2004)
(Specification)Standard Specification for Tantalum and Tantalum Alloy Rod and Wire
Standard Specification for Tantalum and Tantalum Alloy Rod and Wire
ABSTRACT
This specification covers unalloyed and alloyed tantalum rod and wire. The materials covered are: R05200, R05400, R05255, R05252, and R05240. These materials shall be made from vacuum-arc melted or electron-beam melted ingots or powder-metallurgy consolidated unalloyed tantalum. The chemical composition shall conform to the required contents of carbon, oxygen, nitrogen, hydrogen, niobium, iron, titanium, tungsten, molybdenum, silicon, nickel, and tantalum. Chemical analysis shall be made. Mechanical properties shall conform to the required tensile strength, yield strength, and elongation.
SCOPE
1.1 This specification covers unalloyed and alloyed tantalum rod and wire.
1.2 The materials covered by this specification are:
1.2.1 R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both,
1.2.2 R05400, unalloyed tantalum, powder-metallurgy consolidation,
1.2.3 R05255, tantalum alloy, 90 % tantalum 10 % tungsten, electron-beam furnace or vacuum-arc melt, or both,
1.2.4 R05252, tantalum alloy, 97.5 % tantalum 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both, and
1.2.5 R05240 tantalum alloy, 60 % tantalum 40 % columbium, electron-beam furnace or vacuum-arc melt, or both.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
The following precautionary caveat pertains only to the test methods portion, Section 13, of this specification:This standard does not purport to address all of 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:B365 −98(Reapproved2004)
Standard Specification for
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Tantalum and Tantalum Alloy Rod and Wire
This standard is issued under the fixed designation B365; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This specification covers unalloyed and alloyed tanta- 3.1 Definitions of Terms Specific to This Standard:
lum rod and wire. 3.1.1 lot, n—all material produced from the same ingot or a
single powder blend at one time, with the same cross section
1.2 The materials covered by this specification are:
and with the same nominal metallurgical parameters.
1.2.1 R05200, unalloyed tantalum, electron-beam furnace
3.1.2 rod, n—material 0.125 to 2.5 in. (3.18 to 63.50 mm) in
or vacuum-arc melt, or both,
diameter in round, hexagonal, or octagonal cross section
1.2.2 R05400, unalloyed tantalum, powder-metallurgy
supplied in straight lengths.
consolidation,
1.2.3 R05255,tantalumalloy,90 %tantalum10 %tungsten,
3.1.3 wire, n—material 0.010 to 0.124 in. (0.254 to 3.15
electron-beam furnace or vacuum-arc melt, or both,
mm) in diameter furnished in coils or on spools or reels.
1.2.4 R05252, tantalum alloy, 97.5 % tantalum 2.5 %
Material less than 0.010 in. in diameter is not covered by this
tungsten, electron-beam furnace or vacuum-arc melt, or both,
specification.
and
4. Ordering Information
1.2.5 R05240 tantalum alloy, 60 % tantalum 40 %
columbium, electron-beam furnace or vacuum-arc melt, or
4.1 Orders for material under this specification shall include
both.
the following information as applicable:
4.1.1 Quantity (weight or number of pieces),
1.3 The values stated in inch-pound units are to be regarded
4.1.2 Name of material (tantalum rod or wire),
as the standard. The values given in parentheses are for
4.1.3 Type (see 1.2),
information only.
4.1.4 Method of manufacture (Section 5),
1.4 The following precautionary caveat pertains only to the
4.1.5 ASTM designation,
test methods portion, Section 13, of this specification: This
4.1.6 Finish and appearance (Section 9), and
standard does not purport to address all of the safety problems,
4.1.7 Additions to the specification and supplementary re-
if any, associated with its use. It is the responsibility of the user
quirements if required.
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
5. Materials and Manufacture
tions prior to use.
5.1 Material covered by this specification shall be made
from vacuum-arc melted or electron-beam melted ingots or
2. Referenced Documents
powder-metallurgy consolidated unalloyed tantalum.
2
2.1 ASTM Standards:
5.2 The various tantalum mill products covered by this
E8 Test Methods for Tension Testing of Metallic Materials
specification are formed with the conventional extrusion,
E29 Practice for Using Significant Digits in Test Data to
forming, swaging, rolling, and drawing equipment normally
Determine Conformance with Specifications
available in metal working plants.
6. Chemical Composition
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This specification is under the jurisdiction of ASTM Committee B10 on
6.1 The tantalum and tantalum alloy ingots and the tantalum
Reactive and Refractory Metals and Alloys and is the direct responsibility of
powder-metallurgy consolidated ingots for conversion to fin-
Subcommittee B10.03 on Niobium and Tantalum.
ished products covered by this specification shall conform to
Current edition approved May 1, 2004. Published May 2004. Originally
the requirements for chemical composition as prescribed in
approved in 1961. Last previous edition approved in 1998 as B365 – 98. DOI:
10.1520/B0365-98R04.
Table 1.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1.1 Analysis for elements not listed in Table 1 and not
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
normally expected in tantalum shall not be required unless
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specified at time of purchase.
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B365−98(2004)
TABLE 1 Chemical Requirements
Content, max, weight%
Electron-Beam Electron-Beam Electron-Beam
Electron-Beam
Sintered Cast (R05255) Cast (R05252) Cast (R05240)
Cast (R05200)
Element
(R05400) Vacuum-Arc Cast Vacuum-Arc Cast Vacuum-Arc Cast
Vacuum-Arc Cast
Unalloyed (R05255) 90% (R05252) 97.5% (R05240) 60%
(R05200) Unalloyed
Tantalum Tantalum 10% Tantalum 2.5% Tantalum 40%
Tantalum
Tungste
...
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