ASTM B387-10

Standard Specification for Molybdenum and Molybdenum Alloy Bar, Rod, and Wire

ABSTRACT
This specification covers unalloyed molybdenum and molybdenum alloy bar, rod, and wire. The following materials are covered: molybdenum 360, molybdenum 361, molybdenum 363, molybdenum 364, molybdenum 365, and molybdenum 366. These materials shall be manufactured with conventional extrusion, forging, swaging, rolling, and drawing equipment. These shall materials be made by vacuum arc-melted or powder metallurgy methods. The chemical composition shall conform to the required contents of carbon, oxygen, nitrogen, iron, nickel, silicon, titanium, tungsten, zirconium, and molybdenum. Chemical analysis shall be done. Mechanical properties shall conform to the required tension properties: tensile strength, yield strength, elongation, and diamond pyramid hardness. Tension test shall also be done.
SCOPE
1.1 This specification covers unalloyed molybdenum and molybdenum alloy bar, rod, and wire as follows:  
1.1.1 Molybdenum 360—Unalloyed vacuum arc-cast molybdenum.  
1.1.2 Molybdenum 361—Unalloyed powder metallurgy molybdenum.  
1.1.3 Molybdenum Alloy 363—Vacuum arc-cast molybdenum-0.5% titanium-0.1% zirconium (TZM) alloy.  
1.1.4 Molybdenum Alloy 364—Powder metallurgy molybdenum-0.5% titanium-0.1% zirconium (TZM) alloy.  
1.1.5 Molybdenum 365—Unalloyed vacuum arc-cast molybdenum, low carbon.  
1.1.6 Molybdenum Alloy 366—Vacuum arc-cast molybdenum, 30% tungsten alloy.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.

General Information

• Status: Historical
• Publication Date: 31-May-2010
• ICS: 77.150.99 - Other products of non-ferrous metals
• Technical Committee: B10 - Reactive and Refractory Metals and Alloys
• Drafting Committee: B10.04 - Molybdenum and Tungsten

Relations

• Replaces: ASTM B387-90(2001) - Standard Specification for Molybdenum and Molybdenum Alloy Bar, Rod, and Wire (Withdrawn 2010)
• Effective Date: 01-Jun-2010

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:B387 −10
Standard Specification for
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Molybdenum and Molybdenum Alloy Bar, Rod, and Wire
This standard is issued under the fixed designation B387; 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 F289 Specification for Molybdenum Wire and Rod for
Electronic Applications
1.1 This specification covers unalloyed molybdenum and
molybdenum alloy bar, rod, and wire as follows:
3. Terminology
1.1.1 Molybdenum 360—Unalloyed vacuum arc-cast mo-
lybdenum. 3.1 Definitions of Terms Specific to This Standard:
1.1.2 Molybdenum 361—Unalloyed powder metallurgy mo- 3.1.1 bar and rod, n—any straight product with a round,
lybdenum. rectangular, hexagonal, or octagonal solid cross section, 4 in.
1.1.3 Molybdenum Alloy 363—Vacuum arc-cast molybde- (101.6mm)indiameterorless,orofequivalentcross-sectional
num–0.5 % titanium–0.1 % zirconium (TZM) alloy. area.
1.1.4 Molybdenum Alloy 364—Powder metallurgy molyb-
3.1.2 wire, n—any product furnished in coils or on spools or
denum–0.5 % titanium–0.1 % zirconium (TZM) alloy.
reels.
1.1.5 Molybdenum 365—Unalloyed vacuum arc-cast
NOTE 1—This specification covers wire no smaller than 0.020 in. (0.51
molybdenum, low carbon.
mm) in diameter or of equivalent cross-sectional area. Specification F289
1.1.6 Molybdenum Alloy 366—Vacuum arc-cast
covers diameters up to 0.020 in. (0.51 mm).
molybdenum, 30 % tungsten alloy.
4. Ordering Information
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
4.1 Orders for material under this specification shall include
conversions to SI units that are provided for information only
the following information as applicable:
and are not considered standard.
4.1.1 Material number and temper designation (Section 1
and Table 3),
1.3 The following precautionary caveat pertains only to the
4.1.2 Product form (Section 3),
test method portions of this specification: This standard does
4.1.3 Chemical requirements (Table 1 and Table 2),
not purport to address all of the safety concern, if any,
associated with its use. It is the responsibility of the user of this 4.1.4 Metallurgical condition (Section 7),
4.1.5 Mechanical requirements (Section 8),
standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior 4.1.6 Thermal stability (Section 9),
4.1.7 Tolerances (Section 10 and Section 11 and Table 4),
to use.
4.1.8 Workmanship and quality level requirements (Section
2. Referenced Documents
12),
2
4.1.9 Disposition of rejected material (Section 14),
2.1 ASTM Standards:
4.1.10 Certification and reports (Section 15),
E8 Test Methods for Tension Testing of Metallic Materials
4.1.11 Marking (Section 16), and
E29 Practice for Using Significant Digits in Test Data to
4.1.12 Packaging (Section 17).
Determine Conformance with Specifications
E2626 Guide for Spectrometric Analysis of Reactive and
5. Materials and Manufacture
Refractory Metals
5.1 The various molybdenum mill products covered by this
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This specification is under the jurisdiction of ASTM Committee B10 on
specification shall be manufactured with the conventional
Reactive and Refractory Metals and Alloys and is the direct responsibility of
extrusion, forging, swaging, rolling, and drawing equipment
Subcommittee B10.04 on Molybdenum and Tungsten.
normally found in primary ferrous and nonferrous plants. The
CurrenteditionapprovedJune1,2010.PublishedJuly2010.Originallyapproved
ingot metal for Molybdenum 360 and 365 and Molybdenum
in 1962. Last previous edition approved in 2001 as B387 - 90 (2001) which was
withdrawn January 2010 and reinstated in June 2010. DOI: 10.1520/B0387-10.
Alloys 363 and 366 is vacuum arc-melted in furnaces of a type
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
suitable for reactive, refractory metals. For Molybdenum 361
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and 364 the metal is consolidated by powder metallurgy
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. methods.
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B387−10
TABLE 1 Chemical Requirements
Composition, %
Element Material Number
360 361 363 364 365 366
C 0.030 max 0.010 max 0.010–0.030 0.010–0.040 0.010 max 0.030 max
A
O, max 0.0015 0.0070 0.0030 0.030 0.0015 0.0025
A
N, max 0.002 0.002 0.002 0.002 0.002 0.002
Fe, max 0.010 0.010 0.010 0.010 0.010 0.010
...