ASTM D4802-01

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An American National Standard
Designation: D 4802 – 01
Standard Specification for
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Poly(Methyl Methacrylate) Acrylic Plastic Sheet
This standard is issued under the fixed designation D 4802; 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 * D 542 Test Methods for Index of Refraction of Transparent
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Organic Plastic
1.1 This specification covers monolithic methacrylate sheets
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D 570 Test Method for Water Absorption of Plastics
produced by various processes. For this specification, meth-
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D 638 Test Method for Tensile Properties of Plastics
acrylate sheet shall be composed of polymerized acrylic
D 648 Test Method for Deflection Temperature of Plastics
monomers of which at least 80 % shall be methyl methacrylate.
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Under Flexural Load in the Edgewise Position
NOTE 1—This specification is intended to consolidate the requirements
D 792 Test Methods for Density and Specific Gravity (Rela-
of the Cast Methacrylate Plastic Sheets portion of discontinued Fed. Spec.
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tive Density) of Plastics by Displacement
L-P-391D, discontinued Specification D 702. Cast Methacrylate Plastic
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D 883 Terminology Relating to Plastics
Sheets, Rods, Tubes and Shapes, and discontinued Specification D 1547,
D 1003 Test Method for Haze and Luminous Transmittance
Extruded Acrylic Plastic Sheet.
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of Transparent Plastics
1.2 This specification is intended to cover acrylic sheet for
D 1044 Test Method for Resistance of Transparent Plastics
general-purpose applications. For specialty applications con-
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to Surface Abrasion
sult the appropriate use standards.
D 1308 Test Method for Effect of Household Chemicals on
1.3 The following safety hazards caveat pertains only to the
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Clear and Pigmented Organic Finishes
test methods portion, Section 8, of this specification: This
D 2565 Practice for Xenon Arc Exposure of Plastics In-
standard does not purport to address all of the safety concerns,
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tended for Outdoor Applications
if any, associated with its use. It is the responsibility of the user
D 3002 Guide for Evaluation of Coatings Applied to Plas-
of this standard to establish appropriate safety and health
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tics
practices and determine the applicability of regulatory limita-
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D 3359 Test Method for Measuring Adhesion by Tape Test
tions prior to use.
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D 3892 Practice for Packaging/Packing of Plastics
1.4 Acrylic sheet is used frequently in applications in which
E 29 Practice for Using Significant Digits in Test Data to
extreme clarity, lack of optical distortion and absence of any
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Determine Conformance with Specifications
foreign particulate matter are of primary significance. Re-
2.2 ISO Standard:
ground material may be used as long as careful control is used
ISO 7823-1:1987 (E) Plastics—Poly(Methyl Methacrylate)
to eliminate adverse effects on these properties. The use of
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Sheets—Types, Dimensions, and Characteristics
recycled material in type B-1 and B-2 sheet, may have adverse
effects on these properties which would preclude its use in
3. Terminology
most cases. The use of recycled or reground material is not
3.1 Definitions:
possible for type A-1 and A-2 materials since the sheet is
3.1.1 General—The definitions given in Terminology
produced directly from monomer
D 883 are applicable to this specification.
NOTE 2—This standard is similar to ISO 7823-1:1987 (E) in title only.
3.2 Definitions of Terms Specific to This Standard:
The technical content is significantly different.
3.2.1 bow warp, n—distortion in the form of a simple curve
or arc extending across the sheet and displaced from the
2. Referenced Documents
horizontal when the sheet is laying flat.
2.1 ASTM Standards:
3.2.2 edge kink warpage, n—distortion in the form of a
D 256 Test Methods for Determining the Izod Pendulum
twist, wrinkle, or scallop occurring along the perimeter of the
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Impact Resistance of Plastics
sheet.
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This specification is under the jurisdiction of ASTM Committee D20 on Annual Book of ASTM Standards, Vol 06.02.
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Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Annual Book of ASTM Standards, Vol 08.02.
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Materials. Annual Book of ASTM Standards, Vol 06.01.
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Current edition approved October 10, 2001. Published December 2001. Origi- Annual Book of ASTM Standards, Vol 14.02.
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nally published as D 4802 – 88. Last previous edition D 4802 – 94. Available from American National Standards Institute, 25 W. 43rd St., 4th
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Annual Book of ASTM Standards, Vol 08.01. Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
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