ASTM D6413/D6413M-11ae1
(Test Method)Standard Test Method for Flame Resistance of Textiles (Vertical Test)
Standard Test Method for Flame Resistance of Textiles (Vertical Test)
SIGNIFICANCE AND USE
This test method determines the response of textiles to a standard ignition source, deriving measurement values for afterflame time, afterglow time, and char length.
The vertical flame resistance, as determined by this test method, only relates to a specified flame exposure and application time.
This test method maintains the specimen in a static, draft-free, vertical position and does not involve movement except that resulting from the exposure.
Test Method D6413 has been adopted from Federal Test Standard No. 191A method 5903.1, which has been used for many years in acceptance testing. The between-laboratory precision of this test method has not been established. Refer to Section 14 for single-laboratory precision.
If there are differences or practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, the test samples used should be as homogeneous as possible, that are drawn from the material from which the disparate test results are obtained, and that are assigned randomly in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration on the known bias.
SCOPE
1.1 This test method is used to measure the vertical flame resistance of textiles.
1.1.1 As a part of the measure of flame resistance, afterflame and afterglow characteristics are evaluated.
1.2 This standard shall be used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled laboratory conditions and shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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. ^REFERENCE:
ASTM Standards:
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D4391 Terminology Relating to The Burning Behavior of Textiles
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D6413/D6413M–11a
Standard Test Method for
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Flame Resistance of Textiles (Vertical Test)
This standard is issued under the fixed designation D6413/D6413M; 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.
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´ NOTE—The designation was changed to a Combined units standard and Fig. 6 was updated editorially in January 2012.
1. Scope 3.2 Definitions of Terms Specific to This Standard:
3.2.1 afterflame, n—persistent flaming of a material after
1.1 This test method is used to measure the vertical flame
the ignition source has been removed.
resistance of textiles.
3.2.2 after-flame time, n—the length of time for which a
1.1.1 As a part of the measure of flame resistance, after-
material continues to flame after the ignition source has been
flame and afterglow characteristics are evaluated.
removed.
1.2 This standard shall be used to measure and describe the
3.2.3 afterglow, n—glow in a material after the removal of
responseofmaterials,products,orassembliestoheatandflame
an external ignition source or after the cessation (natural or
under controlled laboratory conditions and shall not be used to
induced) of flaming of the material.
describe or appraise the fire hazard or fire risk of materials,
3.2.4 afterglow time, n—the time afterglow continues after
products, or assemblies under actual fire conditions.
the removal of the ignition source and the cessation of flaming.
1.3 The values stated in either SI units or inch-pound units
3.2.5 char length, n—in measuring flame resistance of
are to be regarded separately as standard. The values stated in
textiles, the distance from the fabric edge, which is directly
each system may not be exact equivalents; therefore, each
exposed to the flame to the furthest point of visible fabric
system shall be used independently of the other. Combining
damage after a specified tearing force has been applied.
values from the two systems may result in non-conformance
3.2.6 charring, n—theformationofcarbonaceousresidueas
with the standard.
the result of pyrolysis or incomplete combustion.
1.4 This standard does not purport to address all of the
3.2.7 flame, n—as related to ignition of textiles, a controlled
safety concerns, if any, associated with its use. It is the
hot, luminous zone of gas or matter in gaseous suspension, or
responsibility of the user of this standard to establish appro-
both, of constant size and shape that is undergoing combustion
priate safety and health practices and determine the applica-
as evidenced by a low-intensity heat flux of less than 1 kw,
bility of regulatory limitations prior to use.
such as candle flame or match flame.
2. Referenced Documents 3.2.8 flame application time, n—the time interval for which
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the ignition flame is applied to a material.
2.1 ASTM Standards:
3.2.9 flame resistance, n—the property of a material
D123 Terminology Relating to Textiles
whereby flaming combustion is prevented, terminated, or
D1776 Practice for Conditioning and Testing Textiles
inhibited following application of a flaming or nonflaming
D4391 Terminology Relating to The Burning Behavior of
source of ignition, with or without subsequent removal of the
Textiles
ignition source.
3. Terminology
3.2.10 glow, n—visible, flameless combustion of the solid
phase of a material.
3.1 Definitions—For definitions of terms relating to the
3.2.11 ignition, n—the initiation of combustion.
combustionoftextiles,seeTerminologyD4391.Fordefinitions
3.2.12 melting, n—a liquification of material under the
of other textile terms used in this test method, refer to
influence of heat.
Terminology D123.
3.2.13 smoldering, n—the combustion of a solid material
without accompaniment of flame but generally with the pro-
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This test method is under the jurisdiction of ASTM Committee D13 Textiles
duction of smoke.
and is the direct responsibility of Subcommittee D13.52 on Flammability.
Current edition approved Oct. 15, 2011. Published November 2011. Discontin-
4. Summary of Test Method
ued in 2008 and reinstated as D6413 – 08. Last previous edition approved in 2011
as D6413–11a. DOI: 10.1520/D6413_D6413M-11AE01.
4.1 A specimen is positioned vertically above a controlled
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
flame and exposed for a specified period of time. The flame
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
then is removed, and afterflame time and afterglow time are
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. measured.
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