ASTM F410-08(2013)
(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
3.1 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 standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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 − 08 (Reapproved 2013)
Standard Test Method for
Wear Layer Thickness of Resilient Floor Coverings by
Optical Measurement
ThisstandardisissuedunderthefixeddesignationF410;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 4. Apparatus
4.1 Compound Microscope, having a magnification of at
1.1 This test method covers the determination of the thick-
nessofthewearlayerofresilientnon-textilefloorcoverings,in least 40×, equipped with an eyepiece micrometer of the ruled
disk or filar type. The scale shall cover approximately 0.1 in.
tile or sheet form, with or without felt backing or foam layer,
by optical measurement. (2.54 mm) and each division shall be equal to approximately
0.0004 in. (0.01 mm) at the object. Either a binocular or
1.2 This test method is applicable for wear layers with a
standard microscope may be used.
minimum thickness of 0.0004 in. (0.01 mm) to a maximum
4.2 Vertical Illuminator (recommended), to illuminate the
thickness of 0.1 in. (2.54 mm), where measurements within
0.0001 in. or 0.0025 mm are tolerable. specimen. If another source is used, the light should fall on the
specimen from as nearly vertical direction as possible.
1.3 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 4.3 Stage Micrometer, for calibrating the eyepiece microm-
eter. The scale shall have the smallest division equal to 0.0004
conversions to SI units that are provided for information only
and are not considered standard. in. (0.01 mm) and shall cover at least 0.1 in. (2.54 mm). The
reference standard used for calibration shall be traceable to a
1.4 This standard does not purport to address all of the
National Standard.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 4.4 Holder—A means for holding the specimen, without
priate safety and health practices and determine the applica-
distortion, so that the cut edge is perpendicular to the optical
bility of regulatory limitations prior to use. axis of the microscope.
4.5 Sharp Knife, or razor blade in a holder, for cutting the
2. Referenced Documents
specimen.
2.1 ASTM Standards:
4.6 Cutting Board of plastic, hardboard or fine-grained
E691Practice for Conducting an Interlaboratory Study to
hardwood.
Determine the Precision of a Test Method
4.7 Straightedge, for guiding the cutting edge.
3. Significance and Use
5. Test Specimen
3.1 This test method is applicable for wear layers with a
5.1 The specimen shall be cut from a properly selected
minimum thickness of 0.001 in. (0.02 mm) to a maximum
sample, representing the area to be measured. It shall be
thickness of 0.1 in. (2.54 mm), where measurements within
approximately 2 in. (50 mm) long on the edge to be measured
0.0005 in. or 0.01 mm are tolerable.
by about 0.5 in. (13 mm) in width.
6. Procedure
ThistestmethodisunderthejurisdictionofASTMCommitteeF06onResilient
6.1 Preparation of Specimen—Place the sample on the
Floor Coverings and is the direct responsibility of Subcommittee F06.20 on Test
cuttingboardwiththefacesideup.Holdthecuttinginstrument
Methods - Products Construction/Materials.
so that the plane of the blade is perpendicular to the face of the
Current edition approved Dec. 1, 2013. Published January 2014. Originally
sample. The cutting edge of the blade should be at an angle to
approved in 1975. Last previous edition approved in 2008 as F410–08. DOI:
10.1520/F0410-08R13.
the horizontal that produces a clean cut. It is essential that the
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
cut is perpendicular to the face of the sample.Apply sufficient
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
pressuresothatacleancutcanbemadecompletelythroughthe
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sample in one stroke, being careful not to distort the sample or
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F410 − 08 (2013)
TABLE 1 Precision
turn the knife from the perpendicular. The cut should be
A B C D E
straight, and at least 2 in. (50 mm) long. Make a similar cut Materials Average Sr SR r R
Material A 18.2147 0.5340 1.0808 1.4952 3.0261
parallel to the first cut, about 0.5 in. (13 mm) apart. Cut each
Material B 19.5567 1.2854 1.3938 3.5992 3.9028
end, so the specimen can be removed from the sample.
Material C 33.8173 0.5305 0.9218 1.4855 2.5811
Material D 10.7353 0.3833 0.3992 1.0734 1.1176
6.2 Thickness Measurement:
Material E 21.0273 0.7411 1.306 2.0750 2.8858
6.2.1 Mount the specimen with the long edge up, the cut
A
Average is the arithmetic mean of optical thickness measurements for all
surfaceperpendiculartotheopticalaxisofthemicroscope(see
replicates from all laboratories of each material.
B
Sr is the within-laboratory standard deviation of the average.
Appendix X1).
C
SR is the between-laboratory standard deviation of the average.
6.2.2 Calibration—Calibrate the eyepiece micrometer
D
r = 2.83 Sr.
E
against the stage micrometer, and record the calibration factor.
R=
...
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