ASTM F16-12(2022)
(Test Method)Standard Test Methods for Measuring Diameter or Thickness of Wire and Ribbon for Electronic Devices and Lamps (Withdrawn 2023)
Standard Test Methods for Measuring Diameter or Thickness of Wire and Ribbon for Electronic Devices and Lamps (Withdrawn 2023)
ABSTRACT
These test methods cover procedures for measuring the diameter or thickness of round and flat wire (ribbon) used in electronic devices and lamps. Anvils shall be used in determining the thickness. The flatness and parallelism of the wire shall be checked using a monochromatic light source, a small optical parallel, and a cylindrical master standard wire gage.
SIGNIFICANCE AND USE
3.1 The methods contained in this standard are intended primarily for referee use, for laboratory measuring, and for certifying size of standard samples used for checking other measuring equipment that may be agreed upon between the supplier and the purchaser.
SCOPE
1.1 These test methods cover procedures for measuring the diameter or thickness of round and flat wire (ribbon) 0.060 in. (1.52 mm) maximum used in electronic devices and lamps.
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 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WITHDRAWN RATIONALE
These test methods covered procedures for measuring the diameter or thickness of round and flat wire (ribbon) 0.060 in. (1.52 mm) maximum used in electronic devices and lamps.
Formerly under the jurisdiction of Committee F01 on Electronics, these test methods were withdrawn in November 2023. This standard is being withdrawn without replacement because Committee F01 was disbanded.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: F16 − 12 (Reapproved 2022)
Standard Test Methods for
Measuring Diameter or Thickness of Wire and Ribbon for
Electronic Devices and Lamps
This standard is issued under the fixed designation F16; 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 measuring equipment that may be agreed upon between the
supplier and the purchaser.
1.1 These test methods cover procedures for measuring the
diameter or thickness of round and flat wire (ribbon) 0.060 in.
4. Apparatus
(1.52 mm) maximum used in electronic devices and lamps.
4.1 Either of two general types of apparatus may be used for
1.2 The values stated in inch-pound units are to be regarded
measuring, depending on the accuracy desired and on the
as standard. The values given in parentheses are mathematical
availability of certified cylindrical master standards for gauge
conversions to SI units that are provided for information only
setting, as follows:
and are not considered standard.
4.1.1 Apparatus A—For use with cylindrical master stan-
1.3 This standard does not purport to address all of the
dards for gauge setting.
safety concerns, if any, associated with its use. It is the
4.1.2 Apparatus B—For use with gauge block standards for
responsibility of the user of this standard to establish appro-
gauge setting.
priate safety, health, and environmental practices and deter-
4.2 Apparatus A, shown in Fig. 1, shall have the following
mine the applicability of regulatory limitations prior to use.
features:
1.4 This international standard was developed in accor-
4.2.1 An adjustable anvil of the size and shape specified for
dance with internationally recognized principles on standard-
the material to be inspected. The anvil shall be nonrotating and
ization established in the Decision on Principles for the
shall be adjustable for position by means of a micrometer or
Development of International Standards, Guides and Recom-
precision adjusting screw, with means for locking the anvil in
mendations issued by the World Trade Organization Technical
any set position after adjustments have been made.
Barriers to Trade (TBT) Committee.
4.2.2 Asensing anvil of the size and shape specified for the
material to be measured, linked directly to a sensing and
2. Summary of Test Method
indicating device of specified precision and sensitivity.
2.1 In order to provide reliable determinations of physical
4.2.3 The adjustable fixed anvil and sensing anvil and the
dimensions of wire and ribbon products, these test methods are
sensing device shall be rigidly mounted with both anvils in
designed to mechanically measure the diameter or thickness
alignmentonthesameaxis.Thesensinganvilshallbemovable
with a high degree of precision. These test methods are based
with provisions for retracting the anvil for placing the speci-
on the use of a sensitive measuring head with calibrated
men in the measuring position.
pressure settings, shaped measuring anvils to reduce errors
4.2.4 Both anvils shall be properly fitted, lapped, and
caused by material curvature or waviness, and a method for
polished so the contacting surfaces are flat and parallel within
presetting the anvil spacing by means of gauge blocks or
the accuracy specified.
cylindrical master standards.
4.2.5 The sensing device shall be provided with a means for
setting the indicator hand or scale to zero, and a calibrated
3. Significance and Use
scale or dial for setting the sensing anvil measuring pressure to
3.1 The methods contained in this standard are intended
thespecifiedvaluerequiredformeasuring.Thissettingshallbe
primarily for referee use, for laboratory measuring, and for
accurate to within6 10 % of the set value.
certifying size of standard samples used for checking other
4.3 Apparatus B, shown in Fig. 2, shall meet the require-
ments specified for Apparatus A in 4.2 with the following
additional features:
These test methods are under the jurisdiction of ASTM Committee F01 on
Electronics and are the direct responsibility of Subcommittee F01.03 on Metallic
4.3.1 The fixed anvil and support to which it is attached
Materials, Wire Bonding, and Flip Chip.
shallbefreetomovealongthemeasuringaxisbutshallbeheld
Current edition approved May 1, 2022. Published May 2022. Originally
in line with the sensing anvil by means of cantilever springs so
published in 1961 as F16 – 61 T. Last previous edition approved in 2017 as F16 –12
(2017). DOI: 10.1520/F0016-12R22. that parallelism with the sensing anvil is maintained. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F16 − 12 (2022)
and free from kinks, dents, or other damage that would
interfere with measuring accuracy.
5.2 Wire or fine ribbon shall be drawn from the spool under
uniformly low tension to prevent elongation. If the material is
obviously contaminated with oil, dirt, or other foreign matter,
it shall be drawn gently through a lint-free cloth, wet with a
suitable solvent.
6. Test Conditions
6.1 The measuring device shall be used in a location that is
clean and free of dust and lint. Vibration, drafts, direct heat
from lamps, and temperature variations shall be minimized.
The equipment shall be kept clean and covered when not in
use.
6.2 For fine wire, smaller than 0.0008 in. (0.02 mm) in
diameter, extra precautions shall be taken to avoid all possible
causes (see 6.1) of inaccurate measurements. The measuring
devices shall be used in a small gauge laboratory with
FIG. 1 Measuring Apparatus A for Use with Cylindrical Master
Standards for Gauge Setting
temperature variations kept to within 65 °C. The equipment
shall be laid out on a clean surface with tools and gauge blocks
on foam rubber pads. All equipment used for measuring, and
the material samples, shall be stabilized by leaving them
together in the gauge room for at least 1 h. Gauge blocks shall
be handled with tongs to prevent temperature variations.
6.3 Gauge blocks shall be recalibrated at least once every
year, using the block calibration size for the calibration setting.
Blocks must be carefully cleaned and handled to prevent
uneven wear with consequent introduction of errors into the
gauge setting.
6.4 The device shall be cleaned, calibrated, and set for
measuring by means of certified gauge blocks or cylindrical
master standards as specified in Section 11.
7. Setting Measuring Apparatus
7.1 Set the measuring apparatus by means of standards so
FIG. 2 Measuring Apparatus B for Use with Gauge Block Stan- that the indicator hand or scale of the sensing device is at zero
dards for Gauge Setting
when adjusted for the nominal size of the material to be
measured. This shall be done by means of certified cylindrical
master standards for Apparatus A and by means of certified
opposite end of the movable anvil support shall terminate in a
gauge blocks for Apparatus B.
ballcontacthavingadiameterfrom0.19in.to0.25in.(4.8mm
to 6.4 mm). The total pressure of the support and springs shall
7.2 Cylindrical master standards shall be certified for
exert a force of 500 6 0 g on the gauge block.
diameter, roundness, and surface finish by a metrology labo-
4.3.2 The gauge block for setting shall be located directly in
ratory. The master cylinders of wire shall be made of hardened
contact with the movable anvil support ball contact. The
steel having a Rockwell hardness of 63 to 65 HRC, and lapped
opposite side of the gauge block shall be supported at three
to a finish of 1 µin. rms or a 4-µin. height (0.0001 mm).
places by hardened steel balls 0.09 in. to 0.12 in. (2.4 mm to
7.3 Gauge blocks shall be certified for length, flatness,
3.2 mm) in diameter and equilaterally spaced to form a
parallelism, and surface finish by a metrology laboratory. The
triangle.
exact thickness of the blocks shall be reported to the nearest
4.3.3 The three ball contacts shall be securely fixed to a
microinch (0.000025 mm) as measured near the center of each
support table and shall be movable for setting the measuring
block. The surface finish shall be equivalent to 1 µin. rms or a
device by means of a precision adjusting screw. Provision shall
4-µin. (0.0001 mm) height or better.
be made for securely locking the table in place after setting.
7.4 Set Apparatus A for the nominal material size to be
5. Test Specimens
measured by placing a cylindrical master standard between the
5.1 Test specimens shall be selected at least 3 ft (0.9 m) two anvils and adjusting the fixed anvil adjusting screw to get
from the end of a spool or coil of material and shall be straight a zero reading on the sensing device. Raise and lower the
F16 − 12 (2022)
sensing anvil against the standard several times and readjust 9. Procedure B for Measuring Large Round Wire
the screw until three consecutive zero readings are obtained.
9.1 Measure round wire, which is between 0.010 in. and
7.5 Set Apparatus B for nominal material size to be mea- 0.060 in. (0.25 mm and 1.5 mm) in diameter, with combination
sured by means of gauge blocks. Select two blocks with a flat and cylindrical anvils as illustrated in Fig. 3. Lap the
difference equal to the nominal size of the material. Use the measuring surface of the sensing anvil 0.115 in. to 0.135 in.
exact length of the blocks as taken from the last certification. (2.93 mm to 3.43 mm) diameter) and polish to a surface finish
Place the longer block between the three-ball support table and of 1 µin. r/s or a 4-µin. (0.0001 mm) height. The fixed anvil
the ball end of the anvil support block, and carefully seat near shall be cylindrical in shape with a radius of approximately
the center of the block. Turn the adjusting screw until the 0.040 in. (1.0 mm) and a length of approximately 0.4 in. (10
indicator on the sensing device is on zero. Raise the ball end of mm). Adjust the fixed anvil so that the contacting surfaces of
the anvil support block, remove the longer gauge block, and the anvils are parallel within 0.00001 in. (0.00025 mm).
replace it with the shorter block in the same position. This in
9.2 A wire location guide may be used on one side of the
effect lowers the fixed measuring anvil from the first zero
fixed anvil for locating each piece of wire in approximately the
setting by an amount equal to the nominal size of the material
samepositionbetweentheanvils.Observetherequirementsfor
to be measured. Leave this gauge block in place while
measuring, including anvil pressure and maximum overall
measurements are being made.
precision of the anvils and measuring apparatus, as
...
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: F16 − 12 (Reapproved 2022)
Standard Test Methods for
Measuring Diameter or Thickness of Wire and Ribbon for
Electronic Devices and Lamps
This standard is issued under the fixed designation F16; 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 measuring equipment that may be agreed upon between the
supplier and the purchaser.
1.1 These test methods cover procedures for measuring the
diameter or thickness of round and flat wire (ribbon) 0.060 in.
4. Apparatus
(1.52 mm) maximum used in electronic devices and lamps.
4.1 Either of two general types of apparatus may be used for
1.2 The values stated in inch-pound units are to be regarded
measuring, depending on the accuracy desired and on the
as standard. The values given in parentheses are mathematical
availability of certified cylindrical master standards for gauge
conversions to SI units that are provided for information only
setting, as follows:
and are not considered standard.
4.1.1 Apparatus A—For use with cylindrical master stan-
1.3 This standard does not purport to address all of the
dards for gauge setting.
safety concerns, if any, associated with its use. It is the
4.1.2 Apparatus B—For use with gauge block standards for
responsibility of the user of this standard to establish appro-
gauge setting.
priate safety, health, and environmental practices and deter-
4.2 Apparatus A, shown in Fig. 1, shall have the following
mine the applicability of regulatory limitations prior to use.
features:
1.4 This international standard was developed in accor-
4.2.1 An adjustable anvil of the size and shape specified for
dance with internationally recognized principles on standard-
the material to be inspected. The anvil shall be nonrotating and
ization established in the Decision on Principles for the
shall be adjustable for position by means of a micrometer or
Development of International Standards, Guides and Recom-
precision adjusting screw, with means for locking the anvil in
mendations issued by the World Trade Organization Technical
any set position after adjustments have been made.
Barriers to Trade (TBT) Committee.
4.2.2 A sensing anvil of the size and shape specified for the
material to be measured, linked directly to a sensing and
2. Summary of Test Method
indicating device of specified precision and sensitivity.
2.1 In order to provide reliable determinations of physical
4.2.3 The adjustable fixed anvil and sensing anvil and the
dimensions of wire and ribbon products, these test methods are
sensing device shall be rigidly mounted with both anvils in
designed to mechanically measure the diameter or thickness
alignment on the same axis. The sensing anvil shall be movable
with a high degree of precision. These test methods are based
with provisions for retracting the anvil for placing the speci-
on the use of a sensitive measuring head with calibrated
men in the measuring position.
pressure settings, shaped measuring anvils to reduce errors
4.2.4 Both anvils shall be properly fitted, lapped, and
caused by material curvature or waviness, and a method for
polished so the contacting surfaces are flat and parallel within
presetting the anvil spacing by means of gauge blocks or
the accuracy specified.
cylindrical master standards.
4.2.5 The sensing device shall be provided with a means for
setting the indicator hand or scale to zero, and a calibrated
3. Significance and Use
scale or dial for setting the sensing anvil measuring pressure to
3.1 The methods contained in this standard are intended
the specified value required for measuring. This setting shall be
primarily for referee use, for laboratory measuring, and for
accurate to within6 10 % of the set value.
certifying size of standard samples used for checking other
4.3 Apparatus B, shown in Fig. 2, shall meet the require-
ments specified for Apparatus A in 4.2 with the following
additional features:
These test methods are under the jurisdiction of ASTM Committee F01 on
Electronics and are the direct responsibility of Subcommittee F01.03 on Metallic
4.3.1 The fixed anvil and support to which it is attached
Materials, Wire Bonding, and Flip Chip.
shall be free to move along the measuring axis but shall be held
Current edition approved May 1, 2022. Published May 2022. Originally
in line with the sensing anvil by means of cantilever springs so
published in 1961 as F16 – 61 T. Last previous edition approved in 2017 as F16 –12
(2017). DOI: 10.1520/F0016-12R22. that parallelism with the sensing anvil is maintained. The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F16 − 12 (2022)
and free from kinks, dents, or other damage that would
interfere with measuring accuracy.
5.2 Wire or fine ribbon shall be drawn from the spool under
uniformly low tension to prevent elongation. If the material is
obviously contaminated with oil, dirt, or other foreign matter,
it shall be drawn gently through a lint-free cloth, wet with a
suitable solvent.
6. Test Conditions
6.1 The measuring device shall be used in a location that is
clean and free of dust and lint. Vibration, drafts, direct heat
from lamps, and temperature variations shall be minimized.
The equipment shall be kept clean and covered when not in
use.
6.2 For fine wire, smaller than 0.0008 in. (0.02 mm) in
diameter, extra precautions shall be taken to avoid all possible
causes (see 6.1) of inaccurate measurements. The measuring
devices shall be used in a small gauge laboratory with
FIG. 1 Measuring Apparatus A for Use with Cylindrical Master
Standards for Gauge Setting
temperature variations kept to within 65 °C. The equipment
shall be laid out on a clean surface with tools and gauge blocks
on foam rubber pads. All equipment used for measuring, and
the material samples, shall be stabilized by leaving them
together in the gauge room for at least 1 h. Gauge blocks shall
be handled with tongs to prevent temperature variations.
6.3 Gauge blocks shall be recalibrated at least once every
year, using the block calibration size for the calibration setting.
Blocks must be carefully cleaned and handled to prevent
uneven wear with consequent introduction of errors into the
gauge setting.
6.4 The device shall be cleaned, calibrated, and set for
measuring by means of certified gauge blocks or cylindrical
master standards as specified in Section 11.
7. Setting Measuring Apparatus
7.1 Set the measuring apparatus by means of standards so
FIG. 2 Measuring Apparatus B for Use with Gauge Block Stan- that the indicator hand or scale of the sensing device is at zero
dards for Gauge Setting
when adjusted for the nominal size of the material to be
measured. This shall be done by means of certified cylindrical
master standards for Apparatus A and by means of certified
opposite end of the movable anvil support shall terminate in a
gauge blocks for Apparatus B.
ball contact having a diameter from 0.19 in. to 0.25 in. (4.8 mm
to 6.4 mm). The total pressure of the support and springs shall
7.2 Cylindrical master standards shall be certified for
exert a force of 500 6 0 g on the gauge block.
diameter, roundness, and surface finish by a metrology labo-
4.3.2 The gauge block for setting shall be located directly in
ratory. The master cylinders of wire shall be made of hardened
contact with the movable anvil support ball contact. The
steel having a Rockwell hardness of 63 to 65 HRC, and lapped
opposite side of the gauge block shall be supported at three
to a finish of 1 µin. rms or a 4-µin. height (0.0001 mm).
places by hardened steel balls 0.09 in. to 0.12 in. (2.4 mm to
7.3 Gauge blocks shall be certified for length, flatness,
3.2 mm) in diameter and equilaterally spaced to form a
parallelism, and surface finish by a metrology laboratory. The
triangle.
exact thickness of the blocks shall be reported to the nearest
4.3.3 The three ball contacts shall be securely fixed to a
microinch (0.000025 mm) as measured near the center of each
support table and shall be movable for setting the measuring
block. The surface finish shall be equivalent to 1 µin. rms or a
device by means of a precision adjusting screw. Provision shall
4-µin. (0.0001 mm) height or better.
be made for securely locking the table in place after setting.
7.4 Set Apparatus A for the nominal material size to be
5. Test Specimens
measured by placing a cylindrical master standard between the
5.1 Test specimens shall be selected at least 3 ft (0.9 m) two anvils and adjusting the fixed anvil adjusting screw to get
from the end of a spool or coil of material and shall be straight a zero reading on the sensing device. Raise and lower the
F16 − 12 (2022)
sensing anvil against the standard several times and readjust 9. Procedure B for Measuring Large Round Wire
the screw until three consecutive zero readings are obtained.
9.1 Measure round wire, which is between 0.010 in. and
7.5 Set Apparatus B for nominal material size to be mea- 0.060 in. (0.25 mm and 1.5 mm) in diameter, with combination
sured by means of gauge blocks. Select two blocks with a flat and cylindrical anvils as illustrated in Fig. 3. Lap the
difference equal to the nominal size of the material. Use the measuring surface of the sensing anvil 0.115 in. to 0.135 in.
exact length of the blocks as taken from the last certification. (2.93 mm to 3.43 mm) diameter) and polish to a surface finish
Place the longer block between the three-ball support table and of 1 µin. r/s or a 4-µin. (0.0001 mm) height. The fixed anvil
the ball end of the anvil support block, and carefully seat near shall be cylindrical in shape with a radius of approximately
the center of the block. Turn the adjusting screw until the 0.040 in. (1.0 mm) and a length of approximately 0.4 in. (10
indicator on the sensing device is on zero. Raise the ball end of mm). Adjust the fixed anvil so that the contacting surfaces of
the anvil support block, remove the longer gauge block, and the anvils are parallel within 0.00001 in. (0.00025 mm).
replace it with the shorter block in the same position. This in
9.2 A wire location guide may be used on one side of the
effect lowers the fixed measuring anvil from the first zero
fixed anvil for locating each piece of wire in approximately the
setting by an amount equal to the nominal size of the material
same position between the anvils. Observe the requirements for
to be measured. Leave this gauge block in place while
measuring, including anvil pressure and maximum overall
measurements are being made.
precision of the anvils and measuring apparatus, as specified in
7.6 To keep the effect of temperature variations to a
Table 2.
minimum, handle each block with insulated tongs when place
...
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