Standard Specification for
This standard is issued under the fixed designation D 4225; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the 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.
This standard has been approved for use by agencies of the Department of Defense.
1.1 This specification covers styrene-butadiene sheeting in
thicknesses of 0.25 mm [0.01 in.] and greater. Sheeting
conforming to this specification is intended for use in instrument housings and applications requiring resistance to impact.
Methods of fabrication may require that the sheet be drawn or
1.2 This specification covers natural and colored sheeting.
1.3 This specification covers quality requirements that include the degree of orientation, amount of warpage or twist,
dimensions, tolerances, and workmanship.
1.4 The values stated in SI units are to be regarded as the
standard. The units given in brackets are for information only.
1.5 This specification allows for the use of recycled plastics
as defined in Guide D 5033.
1.6 The following precautionary statement pertains to the
test method portion only, Section 12, of this specification: This
standard does not purport to address 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.
NOTE 1—There is no known ISO equivalent to this standard.
2. Referenced Documents
2.1 ASTM Standards:
D 256 Test Methods for Determining the Izod Pendulum
Impact Resistance of Plastics2
D 618 Practice for Conditioning Plastics for Testing2
D 638 Test Method for Tensile Properties of Plastics2
D 883 Terminology Relating to Plastics2
D 1238 Test Method for Flow Rates of Thermoplastics by
D 1525 Test Method for Vicat Softening Temperature of
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