ASTM B365-12(2019)
(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.
SIGNIFICANCE AND USE
12.1 For the purpose of determining compliance with the specified limits for requirements on the properties listed in this specification, observed and calculated values shall be rounded as indicated by the rounding method of Practice E29.
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 % niobium, electron-beam furnace or vacuum-arc melt, or both.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:B365 −12 (Reapproved 2019)
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 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification covers unalloyed and alloyed tanta-
lum rod and wire. E8 Test Methods for Tension Testing of Metallic Materials
[Metric] E0008_E0008M
1.2 The materials covered by this specification are:
E29 Practice for Using Significant Digits in Test Data to
1.2.1 R05200, unalloyed tantalum, electron-beam furnace
Determine Conformance with Specifications
or vacuum-arc melt, or both,
1.2.2 R05400, unalloyed tantalum, powder-metallurgy
3. Terminology
consolidation,
3.1 Definitions of Terms Specific to This Standard:
1.2.3 R05255, tantalum alloy, 90 % tantalum, 10 %
3.1.1 lot, n—all material produced from the same ingot or a
tungsten, electron-beam furnace or vacuum-arc melt, or both,
single powder blend at one time, with the same cross section
1.2.4 R05252, tantalum alloy, 97.5 % tantalum, 2.5 %
and with the same nominal metallurgical parameters.
tungsten, electron-beam furnace or vacuum-arc melt, or both,
3.1.2 rod, n—material 0.125 to 2.5 in. (3.18 to 63.50 mm) in
and
diameter in round, hexagonal, or octagonal cross section
1.2.5 R05240 tantalum alloy, 60 % tantalum, 40 % niobium,
supplied in straight lengths.
electron-beam furnace or vacuum-arc melt, or both.
3.1.3 wire, n—material 0.010 to 0.124 in. (0.254 to 3.15
1.3 The values stated in inch-pound units are to be regarded
mm) in diameter furnished in coils or on spools or reels.
as standard. The values given in parentheses are mathematical
Material less than 0.010 in. in diameter is not covered by this
conversions to SI units that are provided for information only
specification.
and are not considered standard.
4. Ordering Information
1.4 The following precautionary caveat pertains only to the
test methods portion, Section 13, of this specification: This 4.1 Orders for material under this specification shall include
standard does not purport to address all of the safety problems,
the following information as applicable:
if any, associated with its use. It is the responsibility of the user 4.1.1 Quantity (weight or number of pieces),
of this standard to establish appropriate safety, health, and
4.1.2 Name of material (tantalum rod or wire),
environmental practices and determine the applicability of 4.1.3 Type (see 1.2),
regulatory limitations prior to use.
4.1.4 Method of manufacture (Section 5),
1.5 This international standard was developed in accor- 4.1.5 ASTM designation,
dance with internationally recognized principles on standard-
4.1.6 Finish and appearance (Section 9), and
ization established in the Decision on Principles for the 4.1.7 Additions to the specification and supplementary re-
Development of International Standards, Guides and Recom-
quirements if required.
mendations issued by the World Trade Organization Technical
5. Materials and Manufacture
Barriers to Trade (TBT) Committee.
5.1 Material covered by this specification shall be made
from vacuum-arc melted or electron-beam melted ingots or
powder-metallurgy consolidated unalloyed tantalum.
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This specification is under the jurisdiction of ASTM Committee B10 on
Reactive and Refractory Metals and Alloys and is the direct responsibility of
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Subcommittee B10.03 on Niobium and Tantalum. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published November 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1961. Last previous edition approved in 2012 as B365 – 12. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/B0365-12R19. the ASTM website.
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B365−12 (2019)
5.2 The various tantalum mill products covered by this 8.3.1 The permissible variation in cut lengths shall not
specification are formed with the conventional extrusion, exceed a total of 0.25 in. (6.35 mm).
forming, swaging, rolling, and drawing equipment normally
8.3.2 The permissible variation in straightness of rounds
available in metal working plants.
shall not exceed 0.050 in. (1.27 mm
...
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