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ASTM F73-96(2017)

(Specification)

Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and Lamps

Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and Lamps

ABSTRACT
This specification covers tungsten-rhenium alloy wire suitable for use in electron devices and lamps. The material is known as UNS R07031. This wire shall conform to the requirements as to chemical composition prescribed. The wire shall be furnished in the following finishes: Finish 1; Finish 2; Finish 3; Finish 4; and Finish 5. The following test methods shall be performed to conform with the specified requirements: chemical analysis; tensile strength; ductility; visual inspection; and dimensional measurements.
SCOPE
1.1 This specification covers tungsten-rhenium alloy wire suitable for use in electron devices and lamps. The material is known as UNS R07031.  
1.2 The term wire as used in this specification applies to all material 0.020 in. (0.51 mm) or less in diameter that is spooled or coiled.  
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 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.  
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

Status
Published
Publication Date
31-May-2017
ICS
29.060.10 - Wires
Technical Committee
F01 - Electronics
Drafting Committee
F01.03 - Metallic Materials, Wire Bonding, and Flip Chip
Current Stage
Ref Project

Relations

Replaces
ASTM F73-96(2013) - Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and Lamps
Effective Date
01-Jun-2017
Refers
ASTM F205-94(2020) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing (Withdrawn 2023)
Effective Date
01-May-2020
Refers
ASTM F219-96(2018) - Standard Test Methods of Testing Fine Round and Flat Wire for Electron Devices and Lamps (Withdrawn 2023)
Effective Date
01-Mar-2018
Refers
ASTM F205-94(2015) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
Effective Date
01-Jul-2015
Refers
ASTM F219-96(2013) - Standard Test Methods of Testing Fine Round and Flat Wire for Electron Devices and Lamps
Effective Date
01-May-2013
Refers
ASTM F205-94(2010)e1 - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
Effective Date
01-Dec-2010
Refers
ASTM F219-96(2009) - Standard Test Methods of Testing Fine Round and Flat Wire for Electron Devices and Lamps
Effective Date
01-May-2009
Refers
ASTM F205-94(2005) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
Effective Date
01-Jan-2005
Refers
ASTM F205-94(1999) - Standard Test Method for Measuring Diameter of Fine Wire by Weighing
Effective Date
10-Dec-1999
Refers
ASTM F219-96(2002) - Standard Test Methods of Testing Fine Round and Flat Wire for Electron Devices and Lamps
Effective Date
10-Dec-1996

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ASTM F73-96(2017) - Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and LampsASTM F73-96(2017) - Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and Lamps
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ASTM F73-96(2017) - Standard Specification for Tungsten-Rhenium Alloy Wire for Electron Devices and Lamps
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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:F73 −96 (Reapproved 2017)
Standard Specification for
Tungsten-Rhenium Alloy Wire for Electron Devices and
Lamps
ThisstandardisissuedunderthefixeddesignationF73;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 Length in metres,
3.1.2 Name of material,
1.1 This specification covers tungsten-rhenium alloy wire
3.1.3 Straightness (see 6.2),
suitable for use in electron devices and lamps. The material is
3.1.4 Finish (see 7.2),
known as UNS R07031.
3.1.5 Weight or size (see 6.1) and tolerance, and
1.2 The term wire as used in this specification applies to all
3.1.6 Specification number and UNS number.
material0.020in.(0.51mm)orlessindiameterthatisspooled
NOTE 1—Atypical ordering description for straight chemically cleaned
or coiled.
wireisasfollows:xxxxmetrestungsten-rheniumalloywire,straightened,
1.3 Thevaluesstatedininch-poundunitsaretoberegarded
Finish 2; 280.8 mg/200 mm (63%), per ASTM F73–XX (UNS
R07031).
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4. Chemical Composition
and are not considered standard.
4.1 This wire shall conform to the requirements as to
1.4 This standard does not purport to address all of the
chemical composition prescribed in Table 1.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Physical Properties
priate safety and health practices and determine the applica-
5.1 Tensile Strength—The tensile strength of a 10-in. (250-
bility of regulatory limitations prior to use.
mm) gage length of wire in grams-force per milligram per 200
1.5 This international standard was developed in accor-
mm shall be within the limits prescribed in Table 2, when
dance with internationally recognized principles on standard-
tested in accordance with 8.2.
ization established in the Decision on Principles for the
5.2 General Ductility Requirements—The ductility of wire
Development of International Standards, Guides and Recom-
shall be sufficient to meet the following requirements:
mendations issued by the World Trade Organization Technical
5.2.1 WireSizesupto75mg/200mm,incl—Six1-mlengths
Barriers to Trade (TBT) Committee.
shall be tested in accordance with 8.3.1. The wire shall not
2. Referenced Documents
break more than two times in the six tests. Where required, a
2.1 ASTM Standards: lower limit may be negotiated between purchaser and seller.
F205Test Method for Measuring Diameter of Fine Wire by
5.2.2 Wire Sizes over 75 mg/200 mm—Thirty successive
Weighing
close-wound turns completely around mandrels shall be free
F219Test Methods ofTesting Fine Round and FlatWire for
fromsplittingorcrackingwhentestedinaccordancewith8.3.2
Electron Devices and Lamps
and examined at a magnification of 30×.
5.3 Special Ductility Requirements—Wire for certain appli-
3. Ordering Information
cations requires a special ductility as agreed upon between the
3.1 Orders for wire furnished to this specification shall
purchaser and the seller.
include the following information:
6. Size, Straightness, and Tolerances
This specification is under the jurisdiction of ASTM Committee F01 on
6.1 Dimensional tolerances for wire for use as incandescent
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
Materials, Wire Bonding, and Flip Chip. filamentsshallconformtotherequirementsprescribedinTable
Current edition approved June 1, 2017. Published June 2017. Originally
3.
approvedin1966.Lastpreviouseditionapprovedin2013asF73–96(2013).DOI:
10.1520/F0073-96R17.
NOTE 2—Tolerances are industry standards; closer tolerances may be
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
obtained in certain instances, usually at a premium.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2 Straightness—Straightnessofwire3.00mg/200mmand
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. largershallbespecifiedastheradiusofcurvatureorcamberof
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F73−96 (2017)
TABLE 1 Chemical Requirements
Element Composition
Tungsten remainder
Rhenium, % 2.5 to 3.5
Other elements (each), ppm, max 100
Total other elements, ppm, max 500
TABLE 2 Tensile Properties for UNS R07031
Tensile Strength, gf/(mg/200 mm)
Weight of Wire, mg/200 mm High-Tensile Wire (Finishes 1 and 2) Medium-Tensile Wire (Finish 3)
Min Max Min Max
0.70 to 2.00, incl 85 120 75 105
Over 2.00 to 3.00, incl 75 110 70 100
Over 3.00 to 5.80, incl 65 105 60 100
Over 5.80 to 10.50, incl 75 110 70 100
Over 10.50 to 15.50, incl 70 105 65 95
Over 15.50 65 100 60 90
TABLE 3 Permissible Variations in Weight and Size for All Types of Wire
Weight of Wire, mg/200 mm Dimensional Tolerances Size Uniformity End-to-End (Within a Spool)
Up to 0.36 ±0.02 mg/200 mm 0.02 mg/200 mm
Over 0.36 to 0.67, incl ±0.03 mg/200 mm 0.02 mg/200 mm
Over 0.67 to 2.0, incl ±3 % by weight 0.02 mg/200 mm
Over 2.0 to 760.0, incl ±3 % by weight 1 %
Over 760.0 ±1.5 % of diameter .
a given length of wire as agreed upon between the purchaser 8.2 Tensile Strength—Determine the tensile strength of the
and supplier. For wire under 3.00 mg/200 mm, alternative wire in accordance with Section 8 of Method F219. Use a flat
methods may be used as agreed upon between the purchaser black background when testing fine wire below 0.005 in. (0.13
and supplier. mm) in diameter.
8.3 Ductility—Determine the ductility of the wire as fol-
7. Workmanship, Finish, and Appearance
lows:
7.1 General Requirements: 8.3.1 Wire up to 75 mg/200 mm, incl—Drawthewireovera
7.1.1 The material shall be as smooth, as free of twists, 90° steel bar edge having a radius approximately equal to the
bends, curls, kinks, and as free, when examined at 30×, from diameter of the wire to be tested. Hold the wire against the
dents, swaging marks, scratches, swaging die marks,
...

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This specification covers nickel-coated, round, copper-clad steel wire for electronic applications. The nickel-coated wire shall consist of the basis wire coated with nickel. Tensile strength and elongation of the nickel-coated wire shall conform to the specified requirements for the applicable size and class of copper-clad steel wire. The electrical resistivity shall not exceed the values specified. Continuity, adherence, and mass of the coating shall be determined. Necessary joints in the wire and rod prior to final coating and drawing shall be made.
SCOPE
1.1 This specification covers nickel-coated, round, copper-clad steel wire for electronic application.  
1.2 Nickel coatings in mass percentages of the total mass of the coated wire are as follows: 2 %, 4 %, 7 %, 10 %, and 27 %. Nickel-coated wire having different minimum mass percentages of nickel may be obtained by mutual agreement between the manufacturer and the purchaser. For information purposes, the thickness of coating in microinches provided by the percentages listed above is shown in Table 1.  
1.3 Four classes of nickel-coated, copper-clad steel wire are covered as follows:  
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Standard Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors

ABSTRACT
This specification covers the standard requirements for round, high-strength, zinc-coated (galvanized), steel core wire with Class A zinc coating used for mechanical reinforcement in the manufacture of special steel reinforced aluminum and aluminum-alloy conductors. The base metal shall be steel produced by the open-hearth, electric-furnace, or basic-oxygen process and the wire shall be cold drawn and coated with zinc. Joints may be made at any stage of processing prior to final cold drawing by the electric butt-weld or flash-welding process. Chemical analysis shall be conducted; wherein, the steel shall conform to the chemical composition requirements for carbon, manganese, phosphorus, sulfur, and silicon. The zinc-coated steel core wire shall conform to the tensile strength and elongation requirements which shall be obtained using a tensile test method. The material shall also undergo wrap and adherence tests; wherein, the wire shall be capable of being wrapped in a close helix without cracking or flaking.
SCOPE
1.1 This specification covers round, high-strength, zinc-coated (galvanized), steel core wire with Class A zinc coating (GA3) for use in overhead electrical conductors.  
1.2 This specification covers wire of diameter from 0.0500 in. to 0.1900 in. inclusive or 1.27 mm to 4.82 mm inclusive.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 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.

  • Technical specification
    4 pages
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  • Technical specification
    4 pages
    English language
    sale 15% off
ASTM
ASTM B520-12(2023)(Specification)
Standard Specification for Tin-Coated, Copper-Clad Steel Wire for Electronic Application

ABSTRACT
This specification covers tin-coated, copper-clad steel wires for electronic applications. The four classes of steel wires considered here are: hard-drawn wires with 30% nominal conductivity (Class T30HS); annealed wires with 30% nominal conductivity (Class T30A); hard-drawn wires with 40% nominal conductivity (Class T40HS); and annealed wires with 40% nominal conductivity (Class T40A). Specimens shall go through tests and shall adhere to specified requirements for dimensions, electrical resistivity, tensile strength, and coating continuity and adherence.
SCOPE
1.1 This specification covers tin-coated copper-clad steel wire for electronic application.  
1.2 Four classes of tin-coated copper-clad steel wire are covered as follows:  
1.2.1 Class T30HS—Nominal 30 % conductivity, hard-drawn,  
1.2.2 Class T30A—Nominal 30 % conductivity, annealed,  
1.2.3 Class T40HS—Nominal 40 % conductivity, hard-drawn, and  
1.2.4 Class T40A—Nominal 40 % conductivity, annealed.  
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.  
1.3.1 Exception—The SI values for resistivity and volume are to be regarded as standard.  
1.4 The following safety hazards caveat pertains only to the test method portion, Section 6, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Consideration should be given to toxicity and flammability when selecting solvent cleaners.)  
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.

  • Technical specification
    6 pages
    English language
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