ASTM F137-01
(Test Method)Standard Test Method for Flexibility of Resilient Flooring Materials with Cylindrical Mandrel Apparatus
Standard Test Method for Flexibility of Resilient Flooring Materials with Cylindrical Mandrel Apparatus
SCOPE
1.1 This test method covers the determination of the flexibility of resilient flooring materials by means of cylindrical mandrel apparatus. It is especially applicable to sheet goods and some tiles.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only.
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 to determine the applicability of regulatory limitations prior to use.
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Designation: F 137 – 01
Standard Test Method for
Flexibility of Resilient Flooring Materials with Cylindrical
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Mandrel Apparatus
This standard is issued under the fixed designation F 137; 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 4. Test Specimen
1.1 This test method covers the determination of the flex- 4.1 The test specimens shall consist of a portion of the
ibility of resilient flooring materials by means of cylindrical material 2 6 0.05 in. (50 6 1.27 mm) wide and at least 9 in.
mandrel apparatus. It is especially applicable to sheet goods (225 mm) long.
and some tiles. 4.2 Use a die, knife, or other similar instrument to prepare
1.2 The values stated in inch-pound units are to be regarded the specimen and to produce uniform smooth edges. Do not
as standard. The values given in parentheses are for informa- test specimens with nicked or fractured edges.
tion only.
5. Conditioning
1.3 This standard does not purport to address all of the
5.1 Condition the test specimens for at least 24 h at 73.4 6
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 1.8°F (23 6 1°C) and 50 6 5 % relative humidity, and test in
the same environment. Alternatively, testing may be performed
priate safety and health practices and to determine the
applicability of regulatory limitations prior to use. at room temperature in an uncontrolled environment if carried
out within 5 min.
2. Significance and Use
5.2 Specimens shall be conditioned on a flat surface. If
2.1 Flexibility is that property of a material which allows it necessary, they can be weighted to remove all curvature.
to be deformed by bending or rolling without cracking,
6. Procedure
breaking, or other permanent defects, using whatever force is
6.1 In the actual flexing of the specimen, place the specimen
necessary to bend or roll it. Flexibility is an important
characteristic of flooring in that it provides for ease of handling over a mandrel with the wearing surface face out and the major
axis of the specimen perpendicular to the major axis of the
in rolling, cutting, and fitting.
mandrel.
3. Apparatus
6.2 Bend the material around the mandrel at a uniform rate
3.1 Flexibility Test Equipment, consisting of mandrels, that through a 180° angle while holding the specimen at each end.
is, cylindrical rods with circular cross sections having outside Take 3 to 5 s to complete the bend. Maintain a good contact
diameters of 0.25 in. (6.4 mm) and 0.50 to 5 in. (12.7 to 127 between specimen and mandrel.
mm) increasing in increments of 0.5 in. (12.7 mm). The 6.3 Examine the specimen face visually in the bent position
contacting faces of the rods shall be a minimum of 2.5 in. (63.5 for breaks, cracks, or other damage at the completion of the
mm) in length. bending operation. When required by the detailed specification,
3.2 Stand or Other Device, to firmly support the mandrel in straighten the specimen at the same rate at which it was bent
a horizontal position during the test. and examine the back for the same faults.
3.3 Conditioning Area, capable of maintaining 73.4 6 1.8°F 6.4 When a mandrel of particular diameter has been speci-
(23 6 1°C) and 50 6 5 % relative humidity. fied, as for a purchase specification, use that mandrel.
3.4 Die, Knife, or Similar Instrument to prepare test speci- 6.5 Determine the smallest mandrel around which the ma-
mens with uniform smooth edges. terial may be bent without showing breaks, cracks, or other
damage. To do this, estimate the size of the mandrel over which
the specimen will not break. Then use a series of mandrels,
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each one consecutively smaller than the first, until breaks or
This test method is under the jurisdiction of ASTM Committee F06 on Resilient
Floor Coverings and is the direct responsibility of Subcommittee F06.20 on Test
cracks are exhibited. Start with a fresh specimen for each
Methods - Products Construction/Materials.
separate flex.
Current edition approved Sept. 10, 2001. Published December 2001. Originally
e1
6.6 The exact number of test on a specified mandrel (6.4) or
published as F 137–71. Last previous edition F 137–71(1994) .
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest
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