Standard Test Method for Measuring the Comparative Burning Characteristics and Resistance to Burn-Through of Solid Plastics Using 125-mm Flame

SIGNIFICANCE AND USE
The test results represent afterflame plus afterglow time, in seconds, for a material under the conditions of the test. The test results for plaques also indicate whether or not the specified flame will burn through a material.
The effect of material thickness, colors, additives, deterioration, and possible loss of volatile components is measurable.
The burning characteristics may vary with thickness. Test data should only be compared with data for materials of comparable thickness.
The results serve as a reference for comparing the relative performance of materials and can be an aid in material selection.
In this test method, the specimens are subjected to specific laboratory test conditions. If different test conditions are substituted or the end-use conditions are changed, it will not always be possible by or from this test method to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire-test-exposure conditions described in this test method.
SCOPE
1.1 This fire-test-response test method covers a small-scale laboratory procedure for determining the relative burning characteristics and the resistance to burn-through of plastics using small bar and plaque specimens exposed to a 125-mm (500-W nominal) flame.
Note 1—This test method and IEC 60695-11-20 are technically equivalent.
Note 2—For additional information on comparative burning characteristics of solid plastics in a vertical position, see Test Method D 3801.
1.2 This test method was developed for polymeric materials used for parts in devices and appliances. The results are intended to serve as a preliminary indication of their acceptability with respect to flammability for a particular application. The final acceptance of the material is dependent upon its use in complete equipment that conforms with the standards applicable to such equipment.
1.3 The classification system described in Appendix X1 is intended for quality assurance and the preselection of component materials for products.
1.4 This test method may be applied to other nonmetallic materials if found to be appropriate.
1.5 This test method is not intended to cover plastics when used as materials for building construction or finishing.
1.6 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazards or fire risk assessment of materials, products, or assemblies under actual fire conditions
1.7 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.  See 6.1 for a specific hazard statement.

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Historical
Publication Date
09-Mar-2003
Technical Committee
Drafting Committee
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ASTM D5048-03 - Standard Test Method for Measuring the Comparative Burning Characteristics and Resistance to Burn-Through of Solid Plastics Using 125-mm Flame
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 5048 – 03
Standard Test Method for
Measuring the Comparative Burning Characteristics and
Resistance to Burn-Through of Solid Plastics Using a
1
125-mm Flame
This standard is issued under the fixed designation D 5048; 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* 2. Referenced Documents
2
1.1 This fire-test-response test method covers a small-scale 2.1 ASTM Standards:
laboratory procedure for determining the relative burning D 883 Terminology Relating to Plastics
characteristics and the resistance to burn-through of plastics D 3801 Test Method for Measuring the Comparative Burn-
using small bar and plaque specimens exposed to a 125-mm ing Characteristics of Solid Plastics in a Vertical Position
(500-W nominal) flame. D 5025 Specification for a Laboratory Burner Used for
Small-Scale Burning Tests on Plastic Materials
NOTE 1—This test method and IEC 60695-11-20 are technically
D 5207 Practice for Calibration of 20 and 125-mm Test
equivalent.
Flames for Small-Scale Burning Tests on Plastic Materials
NOTE 2—For additional information on comparative burning character-
E 176 Terminology of Fire Standards
istics of solid plastics in a vertical position, see Test Method D 3801.
E 691 Practice for Conducting an Interlaboratory Study to
1.2 This test method was developed for polymeric materials
Determine the Precision of a Test Method
used for parts in devices and appliances. The results are
3
2.2 IEC Standard:
intended to serve as a preliminary indication of their accept-
IEC 60695-11-20 Fire Hazard Testing-Part 11-20: Test
ability with respect to flammability for a particular application.
Flames - 500 W Flame Test Methods
The final acceptance of the material is dependent upon its use
in complete equipment that conforms with the standards
3. Terminology
applicable to such equipment.
3.1 Definitions—For terms relating to plastics, the defini-
1.3 The classification system described in Appendix X1 is
tions in this test method are in accordance with Terminology
intended for quality assurance and the preselection of compo-
D 883.Fortermsrelatingtofire,thedefinitionsusedinthistest
nent materials for products.
method are in accordance with Terminology E 176.
1.4 This test method may be applied to other nonmetallic
3.2 Definitions of Terms Specific to This Standard:
materials if found to be appropriate.
3.2.1 afterflame—persistence of flaming of a material, after
1.5 This test method is not intended to cover plastics when
the ignition source has been removed.
used as materials for building construction or finishing.
3.2.2 afterflame time—the length of time for which a
1.6 This standard is used to measure and describe the
material continues to flame, under specified conditions, after
response of materials, products, or assemblies to heat and
the ignition source has been removed.
flame under controlled conditions, but does not by itself
3.2.3 afterglow—persistence of glowing of a material, after
incorporate all factors required for fire hazards or fire risk
cessation of flaming or, if no flaming occurs, after removal of
assessment of materials, products, or assemblies under actual
the ignition source.
fire conditions.
3.2.4 afterglow time—the length of time for which a mate-
1.7 This standard does not purport to address all of the
rial continues to glow under specified test conditions, after the
safety concerns, if any, associated with its use. It is the
ignition source has been removed or cessation of flaming, or
responsibility of the user of this standard to establish appro-
both.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. See 6.1 for a
specific hazard statement.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics the ASTM website.
3
and is the direct responsibility of Subcommittee D20.30 on Thermal Properties. Publications of the International Electrotechnical Commission (IEC) are
Current edition approved March 10, 2003. Published April 2003. Originally available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th
approved in 1990. Last previous edition approved in 1997 as D 5048 – 97. 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, Uni
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