ASTM F85-76(2018)
(Practice)Standard Practice for Nomenclature for Wire Leads Used as Conductors in Electron Tubes (Withdrawn 2023)
Standard Practice for Nomenclature for Wire Leads Used as Conductors in Electron Tubes (Withdrawn 2023)
ABSTRACT
This practice covers the rules for naming one, two, or three-piece round wire leads used as conductors through glass seals in electron tubes, excluding stranded leads and leads for semiconductors. Each portion of designation should be separated by a dash (-). Materials for a component lead are generally designated using the chemical symbols. Claddings or platings are represented by numerical suffixes at the end of the material designation preceded by "C" (coating). For alloys that are unspecified, a numerical value between chemical symbols indicates the percent content of the material preceding the value. Descriptive suffixes are used to specify annealing conditions.
SCOPE
1.1 This practice covers rules for designating one, two, or three-piece round wire leads used as conductors through glass seals in electron tubes. Stranded leads and leads for semiconductors are excluded.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
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.
WITHDRAWN RATIONALE
This practice covered rules for designating one, two, or three-piece round wire leads used as conductors through glass seals in electron tubes.
Formerly under the jurisdiction of Committee F01 on Electronics, this practice was withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.
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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: F85 − 76 (Reapproved 2018)
Standard Practice for
Nomenclature for Wire Leads Used as Conductors in
Electron Tubes
This standard is issued under the fixed designation F85; the number immediately following the designation indicates the year of original
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. Dimensioning
3.1 Diameter—The diameter shall be expressed in millime-
1.1 This practice covers rules for designating one, two, or
three-piece round wire leads used as conductors through glass tres. Three digits shall be used for all diameters under 1 mm
and four or more digits shall be used for all diameters 1 mm
seals in electron tubes. Stranded leads and leads for semicon-
ductors are excluded. and larger. A decimal point is understood to be present three
places from the right.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this 3.2 Length—The length shall be expressed in millimetres
using any number of digits.
standard.
1.3 This standard does not purport to address all of the
NOTE 1—All fractions shall be expressed in millimetres as decimals.
safety concerns, if any, associated with its use. It is the
3.3 Conventions— The diameter shall always precede and
responsibility of the user of this standard to establish appro-
be separated from the length by the letter“ x”. For example, a
priate safety, health, and environmental practices and deter-
wire 13 mm long and 0.508 mm in diameter will be referred to
mine the applicability of regulatory limitations prior to use.
as 508 x 13.
1.4 This international standard was developed in accor-
4. Nomenclature
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 The nomenclature for designating a lead shall consist of
Development of International Standards, Guides and Recom-
one, two, or three parts; for one-, two-, or three-piece leads,
mendations issued by the World Trade Organization Technical
respectively. Each of these parts shall specify for its piece the
Barriers to Trade (TBT) Committee.
diameter in millimetres, the length in millimetres, and the
material (see Section 4). The order for designating the compo-
2. Referenced Documents
nent pieces shall be: ( 1) the inner lead section, (2) the press of
seal section, and (3) the outer lead section.
2.1 ASTM Standards:
4.1.1 Each portion of the designation shall be separated by
B127 Specification for Nickel-CopperAlloy (UNS N04400)
a dash (—), for example,
Plate, Sheet, and Strip
508x13FeCuC40—406x2D—1016x8NiPtd,
B160 Specification for Nickel Rod and Bar
corresponding to Inner Lead—Press Lead—Outer Lead,
F15 Specification for Iron-Nickel-Cobalt Sealing Alloy
respectively.
F29 Specification for Dumet Wire for Glass-to-Metal Seal
4.1.2 One-, two-, or three-piece leads shall be designated
Applications
according to the typical examples listed in Table 1.
F30 Specification for Iron-Nickel Sealing Alloys
F290 Specification for Round Wire for Winding Electron
5. Materials
Tube Grid Laterals
5.1 The material for a component lead section is generally
designated by use of its chemical symbol.Anumerical suffix at
the end of the material designation preceded by “C” (coating)
This practice is under the jurisdiction ofASTM Committee F01 on Electronics
indicates percent of cladding or plating. For unspecified alloys,
and is the direct responsibility of Subcommittee F01.03 on Metallic Materials, Wire
a numerical value between chemical symbols indicates the
Bonding, and Flip Chip.
Current edition approved March 1, 2018. Published April 2018. Originally percent content of the material preceding the value.
approved in 1967. Last previous edition approved in 2013 as F85 - 76 (2013). DOI:
5.2 Additional descriptive suffixes are given in Table 2.
10.1520/F0085-76R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Materials List— Commonly used lead wire materials
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and their respective designations are listed in Table 3. Where
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. trade names are indicated, equivalent materials may be used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F85 − 76 (2018)
TABLE 1 Designation for One, Two, or Three-Piece Leads
Component Sections
No. of Inner lead Press of Seal Lead Outer Lead
Lead Wire Designation
Sections Dia Length Dia Length Dia Length
A A A
Material Material Material
mm mm mm mm mm mm
1 1524x21D . . . 1.524 21 D . . .
2 1016x25Ni–1524 1.016 25 Ni 1
...
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: F85 − 76 (Reapproved 2018)
Standard Practice for
Nomenclature for Wire Leads Used as Conductors in
Electron Tubes
This standard is issued under the fixed designation F85; 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. Dimensioning
1.1 This practice covers rules for designating one, two, or 3.1 Diameter—The diameter shall be expressed in millime-
tres. Three digits shall be used for all diameters under 1 mm
three-piece round wire leads used as conductors through glass
seals in electron tubes. Stranded leads and leads for semicon- and four or more digits shall be used for all diameters 1 mm
and larger. A decimal point is understood to be present three
ductors are excluded.
places from the right.
1.2 The values stated in SI units are to be regarded as
3.2 Length—The length shall be expressed in millimetres
standard. No other units of measurement are included in this
standard. using any number of digits.
1.3 This standard does not purport to address all of the
NOTE 1—All fractions shall be expressed in millimetres as decimals.
safety concerns, if any, associated with its use. It is the
3.3 Conventions— The diameter shall always precede and
responsibility of the user of this standard to establish appro-
be separated from the length by the letter“ x”. For example, a
priate safety, health, and environmental practices and deter-
wire 13 mm long and 0.508 mm in diameter will be referred to
mine the applicability of regulatory limitations prior to use.
as 508 x 13.
1.4 This international standard was developed in accor-
4. Nomenclature
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4.1 The nomenclature for designating a lead shall consist of
Development of International Standards, Guides and Recom-
one, two, or three parts; for one-, two-, or three-piece leads,
mendations issued by the World Trade Organization Technical
respectively. Each of these parts shall specify for its piece the
Barriers to Trade (TBT) Committee.
diameter in millimetres, the length in millimetres, and the
material (see Section 4). The order for designating the compo-
2. Referenced Documents
nent pieces shall be: ( 1) the inner lead section, (2) the press of
seal section, and (3) the outer lead section.
2.1 ASTM Standards:
4.1.1 Each portion of the designation shall be separated by
B127 Specification for Nickel-Copper Alloy (UNS N04400)
a dash (—), for example,
Plate, Sheet, and Strip
508x13FeCuC40—406x2D—1016x8NiPtd,
B160 Specification for Nickel Rod and Bar
corresponding to Inner Lead—Press Lead—Outer Lead,
F15 Specification for Iron-Nickel-Cobalt Sealing Alloy
respectively.
F29 Specification for Dumet Wire for Glass-to-Metal Seal
4.1.2 One-, two-, or three-piece leads shall be designated
Applications
according to the typical examples listed in Table 1.
F30 Specification for Iron-Nickel Sealing Alloys
F290 Specification for Round Wire for Winding Electron
5. Materials
Tube Grid Laterals
5.1 The material for a component lead section is generally
designated by use of its chemical symbol. A numerical suffix at
the end of the material designation preceded by “C” (coating)
This practice is under the jurisdiction of ASTM Committee F01 on Electronics
indicates percent of cladding or plating. For unspecified alloys,
and is the direct responsibility of Subcommittee F01.03 on Metallic Materials, Wire
a numerical value between chemical symbols indicates the
Bonding, and Flip Chip.
Current edition approved March 1, 2018. Published April 2018. Originally percent content of the material preceding the value.
approved in 1967. Last previous edition approved in 2013 as F85 - 76 (2013). DOI:
5.2 Additional descriptive suffixes are given in Table 2.
10.1520/F0085-76R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 Materials List— Commonly used lead wire materials
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and their respective designations are listed in Table 3. Where
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. trade names are indicated, equivalent materials may be used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F85 − 76 (2018)
TABLE 1 Designation for One, Two, or Three-Piece Leads
Component Sections
No. of Inner lead Press of Seal Lead Outer Lead
Lead Wire Designation
Sections Dia Length Dia Length Dia Length
A A A
Material Material Material
mm mm mm mm mm mm
1 1524x21D . . . 1.524 21 D . . .
2 1016x25Ni–1524 1.016 25 Ni 1.524 14 D . . .
x14D
3 508x13FeCuC40– 0.508 13 FeCuC40 0.406 2 D 1.016 8 NiPtd
406x2D–1016x8NiP
...
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