ASTM D6668-01(2006)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D6668–01 (Reapproved 2006)
Standard Test Method for
Discrimination Between Flammability Ratings of F=0
and F=1
This standard is issued under the fixed designation D6668; 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.
1. Scope 1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers a means for the discrimination
responsibility of the user of this standard to establish appro-
between solid and liquid materials which will not burn in air
priate safety and health practices and determine the applica-
when exposed to a temperature of 1500°F (815.5°C) for a
bility of regulatory limitations prior to use.
period of 5 min and those which will ignite and burn under the
same conditions.
2. Referenced Documents
1.2 This test method may be applied to any substance which
2.1 ASTM Standards:
is a solid or liquid at ambient temperature and pressure.
D235 Specification for Mineral Spirits (Petroleum Spirits)
1.3 Thepurposeofthistestmethodistoprovideameansfor
(Hydrocarbon Dry Cleaning Solvent)
the classification of the flammability hazard of materials of
2.2 NFPA Standards:
hazarddegrees(F=0)and(F=1)orboth,inaccordancewiththe
NFPA 704 Identification of the Hazards of Materials for
definitions of degrees of flammability hazard as defined by
Emergency Response
NFPA 704 (par. 3.2.1).
1.4 This test method should be used subject to the limita-
3. Terminology
tions that no single fire hazard property such as flash point,
3.1 Definitions of Terms Specific to This Standard:
ignition temperature, or the performance under the conditions
3.1.1 burning, n—for the purposes of this test method,
of the present method shall be used to describe or appraise the
burning shall be defined to include the presence of any visible
fire hazard or fire risk of a material, product, assembly or
flame,sparksorglowingemberswhenthesampleisexposedto
system under actual fire conditions. Fire hazard properties
1500°F (815.5°C) for 5 min under the conditions of the test
measured under controlled laboratory conditions may, never-
method. Charring withouit visible evidence of flame, sparks, or
theless, be employed to describe properly the response of
glowing embers shall not be considered to constitute burning.
materials, products, assemblies or systems under said con-
3.1.2 flammability hazard degree one (F=1), n—materials
trolled conditions. Properties measured under controlled labo-
that will burn in air when exposed to a temperature of 1500°F
ratory conditions may be used as elements of hazard or risk
(815.5°C) for 5 min under the conditions of this test method or
assessmentonlywhensuchassessmenttakesintoaccountallof
which, by reason of their flash point, fire point, autoignition
the factors that are pertinent to the evolution of the fire hazard
temperature, or sustained combustibility, would be rated as
of a given situation.
Hazard Degree One regardless of their performance in this test
1.5 The values stated in inch-pound units are to be regarded
method.
as standard. The values given in parentheses are mathematical
3.1.3 flammability hazard degree zero (F=0), n—materials
conversions to SI units that are provided for information only
that will not burn in air when exposed to a temperature of
and are not considered standard.
1500°F (815.5°C) for 5 min under the conditions of this test
1.6 This standard is used to predict or provide a quantitative
method provided that they do not exhibit properties including
measure of the fire hazard from a specified set of fire conditions
flash point, fire point, autoignition, or sustained combustibility
involving specific materials, products, or assemblies. This
which might cause them to be rated or classified as a more
assessment does not necessarily predict the hazard of actual
hazardous material (that is, F=1 or higher).
fires which involve conditions other than those assumed in the
analysis.
1 2
This test method is under the jurisdiction of ASTM Committee D02 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D02.11 on Engineering Sciences of High Performance Fluids and Solids. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2006. Published August 2006. Originally the ASTM website.
approved in 2001. Last previous edition approved in 2001 as D6668 – 01. DOI: Available from National Fire Protection Assoc., 1 Batterymarch Park, Quincy,
10.1520/D6668-01R06. MA 02269-9101.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6668–01 (2006)
FIG. 1 Assembled Test Apparatus
4. Summary of Test Method 7.2 Temperature Readout Device, any potentiometric or
electronic device capable of reading the temperature of a
4.1 Small, measured amounts of the sample are placed on a
chromel alumel thermocouple within 61°F (0.6°C).
stainless steel
...