ASTM F180-94(2020)
(Test Method)Standard Test Method for Density of Fine Wire and Ribbon Wire for Electronic Devices (Withdrawn 2023)
Standard Test Method for Density of Fine Wire and Ribbon Wire for Electronic Devices (Withdrawn 2023)
ABSTRACT
This test method establishes the standard procedures and calculations used (including precision and biases) for determining, to an accuracy of 1.0 %, the density of fine wires and ribbon wires that are used in electronic devices. This test method requires the use of the following apparatuses: chemical balance, micrometer, standard volume cylinder, thermometer, vacuum pump and desiccator, and hook and cradle suspended by a fine wire.
SCOPE
1.1 This test method covers the determination of, to an accuracy of 1.0 %, the density of fine wires ranging from 0.25 to 0.02 mm in diameter, or ribbons of similar thicknesses, for electronic devices.
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. Specific hazard statements are given in Section 4.
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WITHDRAWN RATIONALE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 test method covered the determination of, to an accuracy of 1.0 %, the density of fine wires ranging from 0.25 to 0.02 mm in diameter, or ribbons of similar thicknesses, for electronic devices.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.
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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: F180 − 94 (Reapproved 2020)
Standard Test Method for
Density of Fine Wire and Ribbon Wire for Electronic
Devices
ThisstandardisissuedunderthefixeddesignationF180;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 3.2 Micrometer, capable of being read to 0.002 mm.
1.1 This test method covers the determination of, to an 3.3 Standard Volume Cylinder—Acylinder of standard vol-
accuracy of 1.0%, the density of fine wires ranging from 0.25 ume made from corrosion-resistant material such as nickel,
to 0.02 mm in diameter, or ribbons of similar thicknesses, for cylindrical in shape to within 0.0025 mm and of uniform
electronic devices. diameter and length. The length of the cylinder shall be
approximately the same as the diameter and about 12.7 to 25.4
1.2 The values stated in SI units are to be regarded as
mm.The surface of the cylinder shall be smooth and free from
standard. No other units of measurement are included in this
defects, pits, or cracks.The corners of the cylinder shall not be
standard.
rounded.
1.3 This standard does not purport to address all of the
3.4 Thermometer, capable of being read to 0.2°C within the
safety concerns, if any, associated with its use. It is the
range from 10 to 35°C.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.5 Vacuum Pump and Desiccator—A vacuum pump ca-
mine the applicability of regulatory limitations prior to use.
pable of producing a vacuum of 0.1 mm Hg and a vacuum
Specific hazard statements are given in Section 4.
desiccator.
1.4 This international standard was developed in accor-
3.6 Hook suspended by a fine wire about 0.08 mm in
dance with internationally recognized principles on standard-
diameter, both made of corrosion-resistant material, for sup-
ization established in the Decision on Principles for the
porting the test specimen while weighing it in the liquid.
Development of International Standards, Guides and Recom-
3.7 Cradle suspended by a fine wire about 0.08 mm in
mendations issued by the World Trade Organization Technical
diameter, both made of corrosion-resistant material, for sup-
Barriers to Trade (TBT) Committee.
porting the standard volume cylinder while weighing it in the
2. Terminology
test liquid.
2.1 Definitions:
4. Test Liquid
2.1.1 density—the weight per unit volume, expressed in
grams per cubic centimetre, in accordance with the following 4.1 The test liquid in which the test specimen and standard
volume cylinder are to be immersed while being weighed shall
equation:
be pure, stable, and shall have a low viscosity, low surface
∆ 5 W/V
tension, low vapor pressure and a density of not less than 2
where:
g/cm . Tetrabromoethane and tribromomethane have been
∆ = density of the specimen found satisfactory for this purpose.
W = weight of the specimen, g, and 2
4.2 Precaution These liquids are moderately toxic and
V = volume of the specimen, cm .
should only be used by those familiar with the hazards
involved.
3. Apparatus
4.2.1 Tests should be carried out under a fume hood. The
3.1 Balance—Asuitable chemical balance capable of being
fluids used should be considered potentially dangerous.
read to 0.1 mg.
4.2.2 Hazard—When treated, highly toxic fumes are given
off. Prolonged inhalation can cause unconsciousness.
This test method is under the jurisdiction of ASTM Committee F01 on
4.2.3 Treatment—Fresh air; artificial respiration if uncon-
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
scious; oxygen if required.
Materials, Wire Bonding, and Flip Chip.
Current edition approved May 1, 2020. Published June 2020. Originally
approved in 1943 as B180–43T. Last previous edition approved in 2015 as
F180–94(2015). DOI: 10.1520/F0180-94R20. See Sax, N. I., Handbook of Dangerous Materials, 1951.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F180 − 94 (2020)
5. Test Specimen 8. Calculation
5.1 The preferred length of wire or ribbon required for the
8.1 Density of Test Liquid—The density of the test liquid
test specimen shall be such that the volume is approximately
shall be calculated as follows:
3 3
0.5 cm . The use of a specimen of less than 0.2 cm is not
d 5 w 1c 2 w /v
~ a l l!
recommended.
where:
6. Preparation of Specimen
d = density of test liquid, g/cm ,
w = weight of standard volume cylinder in air, g,
6.1 The wire or ribbon shall be wiped and loosely wound
a
c = weight of cradle in liquid, g,
into a small coil and bound with wire of the same composition l
w = weight of standard volume cylinder and its supporting
in such a manner that no loose ends project from the body of l
cradle in liquid, g, and
the coil in order to produce a compact coil sufficiently loosely
v = volume of standard cylinder, cm .
wound to permit penetration of the test liquid upon immersion.
The test specimen shall be thoroughly cleaned of lubricants by
The density of most liquids varies considerably with the
washing or boiling in suitable solvents and thoroughly drying
temperature. If the weight of the specime
...
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: F180 − 94 (Reapproved 2020)
Standard Test Method for
Density of Fine Wire and Ribbon Wire for Electronic
Devices
This standard is issued under the fixed designation F180; 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 3.2 Micrometer, capable of being read to 0.002 mm.
1.1 This test method covers the determination of, to an 3.3 Standard Volume Cylinder—A cylinder of standard vol-
accuracy of 1.0 %, the density of fine wires ranging from 0.25 ume made from corrosion-resistant material such as nickel,
to 0.02 mm in diameter, or ribbons of similar thicknesses, for cylindrical in shape to within 0.0025 mm and of uniform
electronic devices. diameter and length. The length of the cylinder shall be
approximately the same as the diameter and about 12.7 to 25.4
1.2 The values stated in SI units are to be regarded as
mm. The surface of the cylinder shall be smooth and free from
standard. No other units of measurement are included in this
defects, pits, or cracks. The corners of the cylinder shall not be
standard.
rounded.
1.3 This standard does not purport to address all of the
3.4 Thermometer, capable of being read to 0.2°C within the
safety concerns, if any, associated with its use. It is the
range from 10 to 35°C.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.5 Vacuum Pump and Desiccator—A vacuum pump ca-
mine the applicability of regulatory limitations prior to use.
pable of producing a vacuum of 0.1 mm Hg and a vacuum
Specific hazard statements are given in Section 4.
desiccator.
1.4 This international standard was developed in accor-
3.6 Hook suspended by a fine wire about 0.08 mm in
dance with internationally recognized principles on standard-
diameter, both made of corrosion-resistant material, for sup-
ization established in the Decision on Principles for the
porting the test specimen while weighing it in the liquid.
Development of International Standards, Guides and Recom-
3.7 Cradle suspended by a fine wire about 0.08 mm in
mendations issued by the World Trade Organization Technical
diameter, both made of corrosion-resistant material, for sup-
Barriers to Trade (TBT) Committee.
porting the standard volume cylinder while weighing it in the
2. Terminology
test liquid.
2.1 Definitions:
4. Test Liquid
2.1.1 density—the weight per unit volume, expressed in
4.1 The test liquid in which the test specimen and standard
grams per cubic centimetre, in accordance with the following
equation: volume cylinder are to be immersed while being weighed shall
be pure, stable, and shall have a low viscosity, low surface
Δ 5 W/V
tension, low vapor pressure and a density of not less than 2
where:
g/cm . Tetrabromoethane and tribromomethane have been
Δ = density of the specimen found satisfactory for this purpose.
W = weight of the specimen, g, and 2
4.2 Precaution These liquids are moderately toxic and
V = volume of the specimen, cm .
should only be used by those familiar with the hazards
involved.
3. Apparatus
4.2.1 Tests should be carried out under a fume hood. The
3.1 Balance—A suitable chemical balance capable of being
fluids used should be considered potentially dangerous.
read to 0.1 mg.
4.2.2 Hazard—When treated, highly toxic fumes are given
off. Prolonged inhalation can cause unconsciousness.
This test method is under the jurisdiction of ASTM Committee F01 on
4.2.3 Treatment—Fresh air; artificial respiration if uncon-
Electronics and is the direct responsibility of Subcommittee F01.03 on Metallic
scious; oxygen if required.
Materials, Wire Bonding, and Flip Chip.
Current edition approved May 1, 2020. Published June 2020. Originally
approved in 1943 as B180 – 43 T. Last previous edition approved in 2015 as
F180 – 94 (2015). DOI: 10.1520/F0180-94R20. See Sax, N. I., Handbook of Dangerous Materials, 1951.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F180 − 94 (2020)
5. Test Specimen 8. Calculation
5.1 The preferred length of wire or ribbon required for the
8.1 Density of Test Liquid—The density of the test liquid
test specimen shall be such that the volume is approximately
shall be calculated as follows:
3 3
0.5 cm . The use of a specimen of less than 0.2 cm is not
d 5 w 1c 2 w /v
~ !
a l l
recommended.
where:
6. Preparation of Specimen 3
d = density of test liquid, g/cm ,
w = weight of standard volume cylinder in air, g,
6.1 The wire or ribbon shall be wiped and loosely wound
a
c = weight of cradle in liquid, g,
into a small coil and bound with wire of the same composition
l
w = weight of standard volume cylinder and its supporting
in such a manner that no loose ends project from the body of l
cradle in liquid, g, and
the coil in order to produce a compact coil sufficiently loosely
v = volume of standard cylinder, cm .
wound to permit penetration of the test liquid upon immersion.
The test specimen shall be thoroughly cleaned of lubricants by
The density of most liquids varies considerably with the
washing or boiling in suitable solvents and thoroughly drying
temperature. If the weight of the specimen and the weight of
in an oven.
the cylinder have been determined at different temperatures, i
...
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