ASTM F410-02
(Test Method)Standard Test Method for Wear Layer Thickness of Resilient Floor Coverings by Optical Measurement
Standard Test Method for Wear Layer Thickness of Resilient Floor Coverings by Optical Measurement
SIGNIFICANCE AND USE
This test method is applicable for wear layers with a minimum thickness of 0.001 in. (0.02 mm) to a maximum thickness of 0.1 in. (2.54 mm), where measurements within 0.0005 in. or 0.01 mm are tolerable.
SCOPE
1.1 This test method covers the determination of the thickness of the wear layer of resilient non-textile floor coverings, in tile or sheet form, with or without felt backing or foam layer, by optical measurement.
1.2 This test method is applicable for wear layers with a minimum thickness of 0.0004 in. (0.01 mm) to a maximum thickness of 0.1 in. (2.54 mm), where measurements within 0.0001 in. or 0.0025 mm are tolerable.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.
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Designation:F410–02
Standard Test Method for
Wear Layer Thickness of Resilient Floor Coverings by
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Optical Measurement
This standard is issued under the fixed designation F 410; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope (2.54 mm) and each division shall be equal to approximately
0.0004 in. (0.01 mm) at the object. Either a binocular or
1.1 This test method covers the determination of the thick-
standard microscope may be used.
nessofthewearlayerofresilientnon-textilefloorcoverings,in
4.2 Vertical Illuminator (recommended), to illuminate the
tile or sheet form, with or without felt backing or foam layer,
specimen. If another source is used, the light should fall on the
by optical measurement.
specimen from as nearly vertical direction as possible.
1.2 This test method is applicable for wear layers with a
4.3 Stage Micrometer, for calibrating the eyepiece mi-
minimum thickness of 0.0004 in. (0.01 mm) to a maximum
crometer. The scale shall have the smallest division equal to
thickness of 0.1 in. (2.54 mm), where measurements within
0.0004 in. (0.01 mm) and shall cover at least 0.1 in. (2.54 mm).
0.0001 in. or 0.0025 mm are tolerable.
4.4 Holder—A means for holding the specimen, without
1.3 The values stated in inch-pound units are to be regarded
distortion, so that the cut edge is perpendicular to the optical
as the standard. The values given in parentheses are for
axis of the microscope.
information only.
4.5 Sharp Knife, or razor blade in a holder, for cutting the
1.4 This standard does not purport to address all of the
specimen.
safety concerns, if any, associated with its use. It is the
4.6 Cutting Board of plastic, hardboard or fine-grained
responsibility of the user of this standard to establish appro-
hardwood.
priate safety and health practices and determine the applica-
4.7 Straightedge, for guiding the cutting edge.
bility of regulatory limitations prior to use.
5. Test Specimen
2. Referenced Documents
5.1 The specimen shall be cut from a properly selected
2.1 ASTM Standards:
sample, representing the area to be measured. It shall be
E 691 Practice for Conducting an Interlaboratory Study to
2 approximately 2 in. (50 mm) long on the edge to be measured
Determine the Precision of a Test Method
by about 0.5 in. (13 mm) in width.
3. Significance and Use
6. Procedure
3.1 This test method is applicable for wear layers with a
6.1 Preparation of Specimen—Place the sample on the
minimum thickness of 0.001 in. (0.02 mm) to a maximum
cutting board with the face side up. Hold the cutting instrument
thickness of 0.1 in. (2.54 mm), where measurements within
so that the plane of the blade is perpendicular to the face of the
0.0005 in. or 0.01 mm are tolerable.
sample. The cutting edge of the blade should be at an angle to
4. Apparatus
the horizontal that produces a clean cut. It is essential that the
cut is perpendicular to the face of the sample. Apply sufficient
4.1 Compound Microscope, having a magnification of at
pressuresothatacleancutcanbemadecompletelythroughthe
least 403, equipped with an eyepiece micrometer of the ruled
sample in one stroke, being careful not to distort the sample or
disk or filar type. The scale shall cover approximately 0.1 in.
turn the knife from the perpendicular. The cut should be
straight, and at least 2 in. (50 mm) long. Make a similar cut
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ThistestmethodisunderthejurisdictionofASTMCommitteeF06onResilient
parallel to the first cut, about 0.5 in. (13 mm) apart. Cut each
Floor Coverings and is the direct responsibility of Subcommittee F06.20 on Test
end, so the specimen can be removed from the sample.
Methods - Products Construction/Materials.
6.2 Thickness Measurement:
Current edition approved Feb. 10, 2002. Published May 2002. Originally
published as F 410–75. Last previous edition F 410–95.
2
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F410
TABLE 1 Precision
6.2.1 Mount the specimen with the long edge up, the cut
A B C D E
surface perpendicular to the optical axis of the microscope (see Materials Average Sr SR r R
Appendix X1).
Material A 18.2147 0.5340 1.0808 1.4952 3.0261
Material B 19.5567 1.2854 1.3938 3.5992 3.9028
6.2.2 Calibration—Calibrate the eyepiece micrometer
Material C 33.8173 0.5305 0.9218 1.4855 2.5811
against the stage micrometer, and record the calibration factor.
Material D 10.7353 0.3833 0.39
...
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