ASTM D5436-15(2020)
(Specification)Standard Specification for Cast Poly(Methyl Methacrylate) Plastic Rods, Tubes, and Shapes
Standard Specification for Cast Poly(Methyl Methacrylate) Plastic Rods, Tubes, and Shapes
ABSTRACT
This specification covers poly(methyl mathacrylate) plastic rods, tubes, and other shapes produced by casting or machining cast blanks. It does not however apply to heat-formed and molded or extruded parts and shapes, or sections that are made by assembling or joining two or more pieces. The plastics may be of two types according to the material's ultraviolet light absorbing properties while the castings may be specified according to the surface finishing which may be a smooth surface finish obtained either in the casting process or by surface polishing or a rough, unfinished surface which may be frosted, abraded, sanded, machined, or as-cast. Tests shall be conducted in the standard laboratory atmosphere to determine the physical and optical properties of the materials. The specimens shall conform to the index of refraction, specific gravity, water absorption, deflection temperature under flexural load, tensile strength, elongation at break, spectral transmittance, luminous transmittance, and haze requirements.
SCOPE
1.1 This specification covers poly(methyl methacrylate) rods, tubes, and other shapes produced by casting or machining cast blanks. This specification does not apply to heat-formed and molded or extruded parts and shapes, or sections that are made by assembling or joining two or more pieces.
Note 1: The properties included in this specification are those required to identify the types and grades of materials covered. There may be other requirements necessary to identify particular characteristics.
1.2 The values stated in SI units are to be regarded as standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 2: There is no known ISO equivalent to this standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D5436 −15 (Reapproved 2020)
Standard Specification for
Cast Poly(Methyl Methacrylate) Plastic Rods, Tubes, and
Shapes
This standard is issued under the fixed designation D5436; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D638 Test Method for Tensile Properties of Plastics
D648 Test Method for Deflection Temperature of Plastics
1.1 This specification covers poly(methyl methacrylate)
Under Flexural Load in the Edgewise Position
rods,tubes,andothershapesproducedbycastingormachining
D792 Test Methods for Density and Specific Gravity (Rela-
cast blanks. This specification does not apply to heat-formed
tive Density) of Plastics by Displacement
and molded or extruded parts and shapes, or sections that are
D883 Terminology Relating to Plastics
made by assembling or joining two or more pieces.
D1003 Test Method for Haze and Luminous Transmittance
NOTE1—Thepropertiesincludedinthisspecificationarethoserequired
of Transparent Plastics
to identify the types and grades of materials covered. There may be other
D1600 Terminology forAbbreviatedTerms Relating to Plas-
requirements necessary to identify particular characteristics.
tics
1.2 The values stated in SI units are to be regarded as
D3892 Practice for Packaging/Packing of Plastics
standard.
E29 Practice for Using Significant Digits in Test Data to
1.3 This standard does not purport to address all of the
Determine Conformance with Specifications
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
3.1 The terminology used in this specification is in accor-
mine the applicability of regulatory limitations prior to use.
dance with Terminology D883 and Terminology D1600.
NOTE 2—There is no known ISO equivalent to this standard.
4. Classification
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.1 Types—This specification covers two types of cast
ization established in the Decision on Principles for the
methacrylate plastics:
Development of International Standards, Guides and Recom-
4.1.1 Type UVA—Material having ultraviolet-lightabsorbing
mendations issued by the World Trade Organization Technical
properties as shown in Table 1.
Barriers to Trade (TBT) Committee.
4.1.2 Type UVT—Material not subject to the light-absorbing
properties shown in Table 1.
2. Referenced Documents
4.2 Finish—Castings may be specified with the following
2.1 ASTM Standards:
finishes:
D542 Test Method for Index of Refraction of Transparent
4.2.1 Finish 1—Rods, tubes, and shapes having a smooth
Organic Plastics
surface finish obtained either in the casting process or by
D570 Test Method for Water Absorption of Plastics
highly polishing the surface.
D618 Practice for Conditioning Plastics for Testing
4.2.2 Finish 2—Rods, tubes, and shapes having a rough,
unfinished surface which may be frosted, abraded, sanded,
machined, or as-cast.
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
NOTE 3—The sawed ends of Finish 1 and Finish 2 rods, tubes, and
Materials.
shapes are not polished.
Current edition approved Dec. 1, 2020. Published December 2020. Originally
approved in 1993. Last previous edition approved in 2015 as D5436 – 15. DOI:
5. General Requirements
10.1520/D5436-15R20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 Finish 1 and Finish 2 cast tubes are subject to the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
following permissible variations from the specified dimen-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sions:
*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
D5436−15 (2020)
TABLE 1 Detail Requirements for Cast Methacrylate Rods, Tubes, TABLE 3 Sizes and Permissible Tolerances for Outside Diameter
and Shapes of Cast Tubes
Type UVA Type UVT Difference Between
Nominal Outside Outside Diameter Maximum and Minimum
Index of refraction, n ,23°C
D
Diameter, Tolerances, Outside Diameter (One
min: 1.48 1.48
mm (in.) ±, mm (in.) Tube), Not to Exceed,
max: 1.50 1.50
mm (in.)
Specific gravity, 23/23 °C (73.4 ⁄73.4°F)
min: 1.18 1.18 up to 76.2 (3.0) 0.5 (0.020) 0.6 (0.025)
up to 98.4 (3.875) 0.8 (0.030) 1.0 (0.040)
max: 1.20 1.20
Spectral transmittance, %, max up to 152.4 (6.00) 1.1 (0.045) 1.5 (0.060)
up to 304.8 (12.00) 1.6 (0.065) 2.0 (0.080)
270 nm: 5 .
280 nm: 5 . greater than 304.8 (12.00) 3.2 (0.125) not applicable
290 nm: 5 .
310 nm: 5 .
340 nm: 5 .
TABLE 4 Sizes and Permissible Length Tolerances for Cut-to-
Luminous transmittance, %, min
Length Cast Rod and Tube
up to 4.7 mm (0.187 in.) thickness: 91 91
25.4 mm (1.00 in.) thickness: 89 89
Nominal Outside Permissible Length
greater than 25.4 mm (1.00 in.) thickness: 87 87
Diameter, Tolerances,
Haze, %, max 3.0 3.0
mm (in.) ±, mm (in.)
Deflection temperature under load at 1820
up to 76 (3.0) 2 (0.079)
kPa (264 psi), °C (°F) min.
up to 280 (11.0) 3 (0.118)
<12.0 mm (0.472 in.) 87 (188.6) 87 (188.6)
greater than 280 (11.0) 6 (0.236)
>12.0 mm (0.472 in.)–24.0 mm (0.944 in.) 88 (190.4) 88 (190.4)
>24.0 mm (0.944 in.)–100 mm (3.937 in.) 93 (199.4) 93 (199.4)
Water absorption at 23 °C
Gain in weight, 3.2 mm (0.125 in.) thick, %, 0.8 0.8
TABLE 5 Size and Permissible Tolerances for Diameter of Cast
max
Rods
Tensile strength at 23 °C (73.4°F), min, MPa 55 (8000) 55 (8000)
(psi) Diameter Tolerances,
Size, Diameter, mm (in.)
Elongation at break, %, min 2 2 ±, mm (in.)
up to 9.5 (0.375) 0.1 (0.005)
up to 25.4 (1.00) 0.2 (0.010)
up to 50.8 (2.00) 0.4 (0.015)
up to 76.2 (3.00) 0.8 (0.030)
5.1.1 Cast tubes shall be specified with either Type A or up to 152.4 (6.00) 1.1 (0.045)
up to 304.8 (12.00) 1.5 (0.060)
Type B wall thickness tolerances as listed in Table 2. Type A
greater than 304.8 (12.00) 2.5 (0.100)
tolerancesarespecifiedforapplicationswherewallthicknessis
critical to performance, otherwise Type B is generally speci-
fied. 6. Detail Requirements
5.1.2 Cast tubes are subject to the outside-diameter toler-
6.1 The following applies to all specified limits in this
ances listed in Table 3.
specification: For purposes of determining conformance with
5.1.3 Cut-to-size lengths of cast tube are subject to the
this specification an observed value or a calculated value shall
length tolerances listed in Table 4.
be rounded to the nearest 1 MPa (100 psi) for tensile strength,
and for all other properties shall be rounded to the nearest unit
5.2 Finish 1 and Finish 2 cast rods are subject to the
following dimensions and tolerances. in the last righthand place of figures used in expressing the
limiting value, in accordance with the rounding method of
5.2.1 Cast rods are subject to the diameter tolerances listed
Practice E29.
in Table 5.
5.
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