ASTM F364-96(2009)

Standard Specification for Molybdenum Flattened Wire for Electron Tubes

ABSTRACT
This specification covers two types of molybdenum flattened wire for electron tubes. These types are UNS R03604 and UNS R03603. The material shall conform to the prescribed limits of chemical composition such as carbon, oxygen, nitrogen, hydrogen, aluminum, calcium, silicon, iron, tungsten, potassium, and tin contents. The material shall be tested for hardness, temper, bending, and delamination.
SCOPE
1.1 This specification covers two types of molybdenum flattened wire up to 0.050 in. (1.27 mm) thick and up to 0.375 in. (9.52 mm) wide, specifically for use in electron tubes. The two grades have UNS numbers R03604 and R03603.
1.2 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.
1.3 The following safety hazards caveat pertains only to the test method described in this specification (see 10.2). This standard does not purport to address all of the safety concerns, 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.

General Information

• Status: Historical
• Publication Date: 30-Apr-2009
• ICS: 29.060.10 - Wires
• Technical Committee: F01 - Electronics
• Drafting Committee: F01.03 - Metallic Materials, Wire Bonding, and Flip Chip

Relations

• Replaces: ASTM F364-96(2002) - Standard Specification for Molybdenum Flattened Wire for Electron Tubes
• Effective Date: 01-May-2009
• Replaced By: ASTM F364-96(2014) - Standard Specification for Molybdenum Flattened Wire for Electron Tubes 
• Effective Date: 01-Jun-2014

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F364 −96(Reapproved 2009)
Standard Specification for
Molybdenum Flattened Wire for Electron Tubes
ThisstandardisissuedunderthefixeddesignationF364;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.2 Type II, UNS R03603—This type shall be a high-
recrystallization-temperature material having the composition
1.1 This specification covers two types of molybdenum
limits prescribed inTable 1 and shall be capable of retaining its
flattened wire up to 0.050 in. (1.27 mm) thick and up to 0.375
ductility after firing at a temperature of 2375 6 25°F (1300 6
in. (9.52 mm) wide, specifically for use in electron tubes. The
14°C) for at least 20 min.
two grades have UNS numbers R03604 and R03603.
1.2 The values stated in inch-pound units are to be regarded
4. Ordering Information
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:
and are not considered standard.
4.1.1 Quantity of each size,
1.3 The following safety hazards caveat pertains only to the
4.1.2 Dimensions or size (see 8.1),
test method described in this specification (see 10.2). This
4.1.3 Edgewise curvature (camber) if required (see 8.2),
standarddoesnotpurporttoaddressallofthesafetyconcerns,
4.1.4 Type (see 3.1),
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
4.1.5 Temper (see 7.1), and
of this standard to establish appropriate safety and health
4.1.6 How furnished (coils, spools, etc.).
practices and determine the applicability of regulatory limita-
tions prior to use.
5. Materials and Manufacture
5.1 The molybdenum wires covered by this specification
2. Referenced Documents
shall be made by any appropriate process.
2.1 ASTM Standards:
NOTE 1—It has been found that molybdenum wire made by the powder
E18 Test Methods for Rockwell Hardness of Metallic Ma-
metallurgy process will meet the requirements of this specification.
terials
E315 Test Methods for Chemical Analysis of Molybdenum
6. Chemical Composition
(Withdrawn 2010)
6.1 Type I and Type II molybdenum wire shall conform to
E384 Test Method for Knoop and Vickers Hardness of
the chemical compositions prescribed in Table 1.
Materials
6.2 The materials shall be analyzed in accordance with Test
3. Classification
Methods E315 or other appropriate ASTM methods when
3.1 Two types of molybdenum flattened wire are covered by available. Other methods, as mutually agreed upon between
this specification: seller and purchaser, may be employed.
3.1.1 Type I, UNS R03604—This type shall have the com-
position limits prescribed in Table 1. 7. Physical Properties
7.1 Temper—Material under this specification shall be sup-
plied in one of the following classifications of temper:
This specification is under the jurisdiction of ASTM Committee F01 on
7.1.1 Hard—As-rolled, not stress-relieved, suitable for
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
spring applications, or
Materials .
7.1.2 Stress-Relieved—Suitable for bending or winding.
CurrenteditionapprovedMay1,2009.PublishedJuly2009.Originallyapproved
in 1973. Last previous edition approved in 2002 as F364 – 96 (2002). DOI:
7.2 The hardness test (see 10.1) is to be used as the criterion
10.1520/F0364-96R09.
for identifying hard and stress-relieved materials in accordance
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
with Table 2.
Standards volume information, refer to the standard’s Document Summary page on
7.2.1 When determining microhardness using light loads,
the ASTM website.
the thickness and load relationships shown in Table 3 are
The last approved version of this historical standard is referenced on
www.astm.org. recommended for best correlation and reproducibility.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F364−96 (2009)
TABLE 1 Chemical Composition TABLE 4 Dimensional Tolerances
Composition, max, ppm Tolerance
Specified Thickness,
plus and mi-
Element
Type I Type II
in. (mm)
nus, in. (mm)
UNS R03604 UNS R03603
Up to 0.0050 (0.127), incl 0.0002 (0.005)
Carbon 50 15
Over 0.0050 to 0.0100 (0.127 to 0.254), 0.0003 (0.008)
Oxygen 80 175
incl
Nitrogen 20 10
Over 0.0100 to 0.0200 (0.254 to 0.508), 0.0004 (0.010)
Hydrogen 10 10
incl
Aluminum 150 150
Over 0.0200 to 0.0300 (0.508 to 0.762), 0.0005 (0.013)
Calcium 50 50
incl
Silicon 100 350
Over 0.0300 to 0.0500 (0.762 to 1.270), 0.0010 (0.025)
Iron 100 100
incl
Tungsten 200 200
Tolerance plus
Potassium 150 150
Specified Width, in. (mm) and minus, in.
Tin 25 25
(mm)
Other elements, each 50 50
Up to 0.025 (0.64), incl 0.001 (0.02)
min % by difference
Over 0.025 to 0.075 (0.64 to 1.90), incl 0.002 (0.05)
Molybdenum 99.90 99.90
Over 0.075 to 0.125 (1.90 to 3.18), incl 0.003 (0.08)
Over 0.125 (3.18) 0.005 (0.13)
TABLE 2 Hardness Ranges
Diamond Pyramid
Rockwell Super- scratches, seams, stains, scale, delamination, splits, slivers, or
Hardness (HDP)
Temper ficial Hardness
any other defects not considered good commercial finish.
or Vickers Hard-
A
30T-Scale
ness (HV)
Hard 300 and over 85 and over
10. Test Methods
Stress-relieved up to 300, excl up to 85, excl
...