ASTM D5207-98
(Practice)Standard Practice for Calibration of 20 and 125 mm Test Flames for Small-Scale Burning Tests on Plastic Materials
Standard Practice for Calibration of 20 and 125 mm Test Flames for Small-Scale Burning Tests on Plastic Materials
SCOPE
1.1 This practice covers the calibration of test flames for small-scale burning tests on plastic materials using the laboratory burner described in Specification D5025. Back pressures and flow rates for methane, propane, and butane supply gases are given for specific test flames. This practice describes a procedure to confirm the heat evolution of the test flame.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety problems, 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.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5207 – 98
Standard Practice for
Confirmation of 20 and 125 mm Test Flames for Small-Scale
Burning Tests on Plastic Materials
This standard is issued under the fixed designation D 5207; 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.
1. Scope * E 176 Terminology of Fire Standards
E 220 Test Method for Calibration of Thermocouples by
1.1 This practice covers the confirmation of test flames for
Comparison Techniques
small-scale burning tests on plastic materials using the labora-
E 230 Temperature-Electromotive Force (EMF) Tables for
tory burner described in Specification D 5025. Back pressures
Standardized Thermocouples
and flow rates for methane, propane, and butane supply gases
E 608 Specification for Metal-Sheathed Base-Metal Ther-
are given for specific test flames. This practice describes a
mocouples
procedure to confirm the heat evolution of the test flame.
2.2 IEC Standards:
1.2 The values stated in SI units are to be regarded as the
IEC/CDV 695-11-3: Fire Hazard Testing-Part 11: Test
standard.
Flames-Section 3: 500 W Flames: Apparatus and Confir-
1.3 This standard should be used to measure and describe
mational Test Methods
the response of materials, products, or assemblies to heat and
IEC/CDV 695-11-4 Ed. 2: Fire Hazard Testing-Part 11:
flame under controlled conditions and should not be used to
Test Flames-Section 4: 50 W Flame: Apparatus and
describe or appraise the fire-hazard or fire-risk of materials,
Confirmational Test Methods
products, or assemblies under actual fire conditions. Results,
however, of the test may be used as elements of a fire-hazard
3. Terminology
assessment or a fire-risk assessment, which takes into account
3.1 Definitions—For definitions of terms used in this prac-
all of the factors, which are pertinent to an assessment of the
tice, refer to Terminology D 883.
fire hazard or fire risk of a particular end use.
NOTE 1—There is no similar ISO standard. This practice is equivalent 4. Summary of Practice
in technical content to, but not fully corresponding in presentation with,
4.1 A test flame of specified height and color is obtained
the confirmatory procedures of IEC/CDV 695-11-3 and IEC/CDV 695-
with gas supplied at a suggested back pressure and flow rate. A
11-4.
thermal sensor is then positioned over the flame, and the time
1.4 This standard does not purport to address all of the
for the temperature of the sensor to increase from 100 to 700°C
safety concerns, if any, associated with its use. It is the
is determined. The time is used to confirm the heat-evolution
responsibility of the user of this standard to establish appro-
profile of the test flame.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 5. Significance and Use
5.1 The flame height and color (indicative of air-to-gas
2. Referenced Documents
ratio) for a test flame have traditionally been specified in the
2.1 ASTM Standards:
individual test method. The energy content of the flame has
D 883 Terminology Relating to Plastics
also been addressed by reference to a specific supply gas. It has
D 3195 Practice for Rotameter Calibration
been determined that the supply-gas back pressure and flow
D 5025 Specification for a Laboratory Burner Used for
rate can be varied without affecting the height and color of the
Small-Scale Burning Tests on Plastic Materials
flame. However, the energy content of the flame is affected.
This practice provides the back pressure and flow rate of the
supply gas for a 20-mm and a 125-mm test flame, and a
1 procedure for confirming the heat-flux profile of the test flame.
This practice is under the jurisdiction of ASTM Committee D-20 on Plastics
5.2 Information is provided for test flames using methane,
and is the direct responsibility of Subcommittee D20.30 on Thermal Properties.
Current edition approved Jan. 10, 1998. Published December 1998. Originally
published as D 5207 – 91.
2 5
Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 04.07.
3 6
Annual Book of ASTM Standards, Vol 11.03. Annual Book of ASTM Standards, Vol 14.03.
4 7
Annual Book of ASTM Standards, Vol 08.03. Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 5207
propane, or butane. Using this information, these supply gases 800°C. Calibrate the combination thermal sensor and tempera-
can be used interchangeably with a standardized burner to ture indicator in accordance with the general procedures
produce essentially the same test flame. outlined in Method E 220. The initial calibration tolerance is
defined in Tables E 230.
6. Apparatus
6.7 Ring Stand, with a clamp or equivalent device, adjust-
6.1 Test Chamber, enclosure or laboratory hood, free of able for positioning of the thermal sensor.
induced or forced draft.
6.8 Timer, stop watch or other suitable timing device
6.2 Laboratory Burner, constructed in accordance with capable of timing to the nearest 0.1 s.
Specification D 5025.
6.9 Gas Supply—A supply of methane, propane, or butane,
6.3 Manometer/Pressure Gage, capable of measuring to 800 with suitable regulator and meter for uniform gas flow.
mm of water, with increments of 5 mm.
6.9.1 Methane, Technical grade, 98 % minimum purity,
6.4 Flow Meter—A rotameter calibrated in accordance with
having a heating value of 37 6 1 MJ/m at 25°C. Natural gas
Practice D 3195, with correlation curves appropriate for the
with a certified heating value of 37 6 1 MJ/m should provide
gas, or a mass flow meter with at least 2 % accuracy.
similar results.
6.5 Thermal Sensory (Copper Slug and Thermocouple)—A
6.9.2 Propane, Natural grade, 96 % minimum purity, having
slug constructed of high conductivity (electrolytic) copper with
a heating value of 94 6 2 MJ/m at 25°C.
dimensions as shown in Fig. 1. A 1.75-g slug is used for the
6.9.3 Butane, CP grade, 99 % minimum purity, having a
20-mm flame, and a 10.0-g slug is used for the 1
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