Standard Test Method for
Measuring the Comparative Burning Characteristics of Solid
Plastics in a Vertical Position1

This standard is issued under the fixed designation D 3801; 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 *

1.1 This fire-test-response standard covers a small-scale
laboratory procedure for determining comparative burning
characteristics of solid-plastic material, using a 20-mm flame
applied to the base of specimens held in a vertical position.
NOTE 1—This test method and Test Method B of IEC 60695-11-10 are
equivalent. IEC 60695-11-10 has replaced ISO 1210.
NOTE 2—For additional information on materials that burn up to the
holding clamp by this test method, see Test Method D 635. For test
methods of flexible plastics in the form of thin sheets and film, see Test
Methods D 4804. For additional information on comparative burning
characteristics and resistance to burn-through, see Test Method D 5048.

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 the appendix is
intended for quality assurance and the preselection of component materials for products.

1.4 It is possible that this test is applicable to nonmetallic
materials other than plastics. Such application is outside the
scope of this technical committee.

1.5 This test method is not intended to cover plastics when
used as materials for building construction or finishing.

1.6 The values stated in SI units are to be regarded as the
standard.

1.7 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 hazard or fire risk
assessment of the materials, products, or assemblies under
actual fire conditions.

1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the

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