ASTM D5947-02
(Test Method)Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
SCOPE
1.1 These test methods cover determination of the physical dimensions of solid plastic specimens where the dimensions are used directly in determining the results of tests for various properties. Use these test methods except as otherwise required in material specifications.
1.2 The values stated in SI units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—There is no similar or equivalent ISO standard.
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Designation: D 5947 – 02
Standard Test Methods for
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Physical Dimensions of Solid Plastics Specimens
This standard is issued under the fixed designation D 5947; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope * used for measurement.
3.2.2 calibration—the set of operations that establishes,
1.1 These test methods cover determination of the physical
under specified conditions, the relationship between values
dimensions of solid plastic specimens where the dimensions
measured or indicated by an instrument or system, and the
are used directly in determining the results of tests for various
corresponding reference standard or known values derived
properties. Use these test methods except as otherwise required
from the appropriate reference standards.
in material specifications.
3.2.3 micrometer, n—an instrument for measuring any di-
1.2 The values stated in SI units are to be regarded as the
mension within absolute uncertainty of 25 μm or smaller.
standard.
3.2.4 verification—proof, with the use of calibrated stan-
1.3 This standard does not purport to address all of the
dards or standard reference materials, that the calibrated
safety concerns, if any, associated with its use. It is the
instrument is operating within specified requirements.
responsibility of the user of this standard to establish appro-
3.2.5 1 mil, n—a dimension equivalent to 25 μm (0.0010
priate safety and health practices and determine the applica-
in.).
bility of regulatory limitations prior to use.
NOTE 1—There is no similar or equivalent ISO standard. 4. Summary of Test Methods
4.1 These test methods provide five different test methods
2. Referenced Documents
for the measurement of physical dimensions of solid plastic
2.1 ASTM Standards:
specimens. The test methods (identified as Test Methods A
2
D 618 Practice for Conditioning Plastics for Testing
through D, and H) use different micrometers that exert various
2
D 638 Test Method for Tensile Properties of Plastics
pressures for varying times upon specimens of different geom-
D 790 Test Methods for Flexural Properties of Unreinforced
etries. Tables 1 and 2 display the basic differences of each test
and Reinforced Plastics and Electrical Insulating Materi-
method and identify methods applicable for use on various
2
als
plastics materials.
2
D 883 Terminology Relating to Plastics
D 2240 Test Method for Rubber Property— Durometer 5. Significance and Use
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Hardness
5.1 These test methods shall be used where precise dimen-
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D 4805 Terminology for Plastics Standards
sions are necessary for the calculation of properties expressed
2.2 ISO Standard:
in physical units. They are not intended to replace practical
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ISO 472 Plastics—Vocabulary
thickness measurements based on commercial portable tools,
nor is it implied that thickness measurements made by the
3. Terminology
procedures will agree exactly.
3.1 Definitions—See Terminologies D 883 and D 4805, and
ISO 472 for definitions pertinent to these test methods. 6. Apparatus
3.2 Definitions of Terms Specific to This Standard: 6
6.1 Apparatus A—Machinist’s Micrometer Caliper with
3.2.1 absolute uncertainty (of a measurement), n—the
Calibrated Ratchet or Friction Thimble:
smallest division that may be read directly on the instrument
6.1.1 Apparatus A is a micrometer caliper without a locking
device but that is equipped with either a calibrated ratchet or a
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These test methods are under the jurisdiction of ASTM Committee D20 on friction thimble. The pressure exerted on the specimen is
Plastics and are the direct responsibility of Subcommittee D20.10 on Mechanical
controllable by the use of a proper manipulative procedure and
Properties.
a calibrated spring (see Annex A1).
Current edition approved August 10, 2002. Published October 2002. Originally
6.1.2 Use an instrument constructed with a vernier capable
published as D 5947 – 96. Last previous edition D 5947 – 01.
2
Annual Book of ASTM Standards, Vol 08.01.
of measurement to the nearest 2.5 μm.
3
Annual Book of ASTM Standards, Vol 09.01.
4
Annual Book of ASTM Standards, Vol 08.03.
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Available from American National Standards Institute, 25 W. 43rd St., 4th
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Floor, New York, NY 10036. Hereinafter referred to as a machinist’s micrometer.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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