ASTM D6261-98

Standard Specification for Extruded and Compression Molded Basic Shapes Made from Thermoplastic Polyester (TPES)

SCOPE
1.1 This specification covers requirements and test methods for the material, dimensions, and workmanship, and the properties of extruded and compression molded plate, rod and tubular bar manufactured from thermoplastic polyester.
1.2 The properties included in this specification are those required for the compositions covered requirements necessary to identify particular characteristics important to specialized applications may be described by using the classification system given in Section 4.
1.3 This specification allows the use of recycled plastics (see Section 4).
1.4 The values are stated in inch-pound units and are regarded as the standard in all property and dimensional tables. For reference purposes, SI units are also included in Table 1 and Table S-TPES only.
1.5 The following precautionary caveat pertainls only to the test method sections of this specification. 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.

General Information

• Status: Historical
• Publication Date: 09-May-1998
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaced By: ASTM D6261-98(2003) - Standard Specification for Extruded and Compression Molded Basic Shapes Made from Thermoplastic Polyester (TPES)
• Effective Date: 10-Mar-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 6261 – 98
Standard Specification for
Extruded and Compression Molded Basic Shapes Made
from Thermoplastic Polyester (TPES)
This standard is issued under the fixed designation D 6261; 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.
INTRODUCTION
This specification is intended to be a means of calling out mechanical grade plastic product used in
the fabrication of end items or parts.
1. Scope Insulating Materials
D 638 Test Method for Tensile Properties of Plastics
1.1 This specification covers requirements and test methods
D 790 Test Methods for Flexural Properties of Unreinforced
for the material, dimensions, and workmanship, and the prop-
and Reinforced Plastics and Electrical Materials
erties of extruded and compression molded plate, rod and
D 883 Terminology Relating to Plastics
tubular bar manufactured from thermoplastic polyester.
D 3892 Practice for Packaging/Packing of Plastics
1.2 The properties included in this specification are those
D 4507 Specification for Thermoplastic Polyester (TPES)
required for the compositions covered Requirements necessary
Unfilled and Reinforced Material
to identify particular characteristics important to specialized
D 4000 Classification System for Specifying Plastics Mate-
applications may be described by using the classification
rials
system given in Section 4.
D 5033 Guide for the Development of Standards Relating to
1.3 This specification allows the use of recycled plastics
the Proper Use of Recycled Plastics
(see Section 4).
D 5927 Specification for Thermoplastic Polyester (TPES)
1.4 The values are stated in inch-pound units and are
Injection and Extrusion Materials Based on ISO Test
regarded as the standard in all property and dimensional tables.
Methods
For reference purposes, SI units are also included in Table 1
2.2 ANSI Standard:
and Table S-TPES only.
Z1.4-1993 Sampling Procedures and Tables for Inspection
1.5 The following precautionary caveat pertains only to the
by Attributes
test method portions sections of this specification. This stan-
dard does not purport to address all of the safety concerns, if
3. Terminology
any, associated with its use. It is the responsibility of the user
3.1 Definitions:
of this standard to establish appropriate safety and health
3.1.1 For definitions of other technical terms pertaining to
practices and determine the applicability of regulatory limita-
plastics used in this specification, see Terminology D 883 or
tions prior to use.
Guide D 5033.
NOTE 1—There is no similar or equivalent ISO Standard.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 plate, n—flat stock ⁄4 in. (6.4 mm) or greater.
2. Referenced Documents
3.2.2 recycled-plastic shape, n—a product made from up to
2.1 ASTM Standards:
100 % recycled plastic.
D 256 Test Method for Determining the Pendulum Impact
3.2.3 rod, n—an extruded solid cylindrical shape with a
Resistance of Notched Specimens of Plastics
minimum diameter of ⁄8in. (3.2 mm).
D 618 Practice for Conditioning Plastics and Electrical
3.2.4 tubular bar, n—an extruded annular shape with mini-
mum inside diameter of ⁄8in. (9.6 mm) and minimum wall
This specification is under the jurisdiction of ASTM Committee D-20 on
Plastics and is the direct responsibility of Subcommittee D20.20 on Plastic Products
(Section D20.20.02). Annual Book of ASTM Standards, Vol 08.02.
Current edition approved May 10, 1998. Published February 1999. Annual Book of ASTM Standards, Vol 08.03.
2 6
As defined in Guide D 5033. Available from American National Standards Institute, 11 W. 42nd St., 13th
Annual Book of ASTM Standards, Vol 08.01. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 6261
thickness of ⁄16 in. (1.6 mm). 4.5.1.1 Example 1—Product made from general purpose
PBT
4. Classification and Material
CELL CALLOUT: S-TPES0111
4.1 Product shape and size as defined in the applicable
S-TPES01 = Product made from PBT in accordance with Table
purchase order.
S-TPES
1 = Unfilled class
4.2 This specification covers product extruded and compres-
1 = General purpose grade product
sion molded as listed in Table S-TPES. Products included in
4.5.1.2 Example 2—Product made from general purpose
the designations reference Specification D 4507 or Specifica-
PET
tion D 5927 callouts where applicable.
CELL CALLOUT: S-TPES0211
4.2.1 The type of thermoplastic polyester shape product
may be categorized by type, grade and class depending on resin
S-TPES02 = Product made from PET in accordance with Table
and filler compositions as defined in Table S-TPES.
S-TPES
1 = Unfilled class
4.2.2 Each type of thermoplastic polyester shape may be
1 = General purpose grade product
categorized into one of several grades as follows:
4.5.2 These two examples illustrate how a one-line, alpha-
4.2.2.1 Grade 1—General Purpose—Extruded or compres-
numeric sequence can identify the product composition, com-
sion molded product made using only 100 % virgin thermo-
mercial parameters and physical characteristics of extruded or
plastic polyester resin.
compression molded product. A space must be used as a
4.2.2.2 Grade 2—Recycled—Extruded or compression
separator between the specification number and the type
molded product made using any amount up to 100 % recycled
designation. No separators are needed between type, class and
thermoplastic polyester plastics.
grade. When special notes are to be included, such information
4.3 The type, class and grade is further differentiated based
should be preceded by a comma. Special tolerances must be
on dimensional stability (elevated temperature excursion test),
noted at time of order and are inserted after the grade in
Table S-TPES, and dimensional requirements, Tables A and B.
parentheses and preceded by a comma.
4.4 Property Tables:
4.4.1 Table S-TPES may be used to describe both extruded
5. Ordering Information
or compression molded products.
5.1 All shapes covered by this specification shall be ordered
4.4.2 Table 1 may also be used to describe extruded or
using the proper callout designation (see 4.5).
compression molded products not included in Table S-TPES
via a cell callout that includes the applicable Table S-TPES
6. Physical Property Requirements
thermoplastic polyester type and specific properties (Designa-
6.1 The physical property values listed within this specifi-
tions 1 through 7).
cation’s tables are to be considered minimum specification
4.4.3 To facilitate the incorporation of future or special
values. Any requirement for specific test data for a given
materials not covered by the Table S-TPES, the “as specified”
production lot should be specified at the time of order. Physical
category (00) for type, class and grade is shown in the table
properties for products not yet included in Table S-TPES may
with the basic properties to be obtained from Table 1, as they
be specified using Table 1 for extruded or compression molded
apply.
products.
4.4.4 Reinforcements and Additive Materials—A symbol
7. Dimensional Requirements
(single-letter) will be used for the major reinforcement or
combination, or both, along with two numbers that indicate the
7.1 The type, class and grade is differentiated based on
percentage of addition by mass with the tolerances as tabulated
dimensional stability (elevated temperature excursion test), as
below. This must be included in all Table 1 callouts.
indicated in Table S-TPES.
Tolerance
7.2 Products shall be produced within commercial toler-
Symbol Material (Based on the Total Mass)
ances and with the lowest stress levels for machined parts as
delineated in Tables A and B.
C Carbon and graphite fiber 6 2%
reinforced
7.3 Tubular bar dimensions shall be supplied in the unfin-
G Glass-reinforced
ished condition, unless otherwise specified at time of order,
< 15 % glass content 6 2%
sufficient to finish to the nominal dimension ordered.
> 15 % glass content 6 3%
L Lubricants (for example, by agreement between the supplier
7.4 The maximum allowable camber or bow or both, shall
PTFE, graphite and and the user
be within the limits referenced in Tables A and B.
silicone
M Mineral 6 2%
8. Workmanship, Finish and Appearance
R Combinations of rein- 6 3 % for the total reinforcement
forcements or fillers, or
8.1 Appearance—The resin material color is white to off-
both
white. The product color shall be as published by the shapes
4.5 Callout Designation—A one-line system shall be used
manufacturer. They shall be uniform in color throughout the
to specify thermoplastic polyester materials covered by this thickness. Specific colors and color matching only as agreed to
specification. The system uses pre-defined cells to refer to
by order. Physical properties may be affected by other colors.
specific aspects of this specification as illustrated below: 8.2 Finish—All products shall be free of blisters, wrinkles,
4.5.1 Examples: cracks, gouges and defects that restrict commercial use of the
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 6261
product. Special surface finish shall be supplied only when test specimen thickness with a minimum of 2.0 in. (50 mm)).
specified in the purchase order or contract. The same care shall be used in the machining as described in
8.3 Defects—All products shall be free of voids, dirt, 12.1.1. The thickness of the specimen shall be that of the
foreign material and embedded particles exceeding ⁄32 in. (0.8 original flat from which it was cut, no machining being done on
mm) maximum diameter as defined in 8.3.1. the top or bottom faces.
8.3.1 The criteria for determining the internal cleanliness 12.2.2 Testing Procedure—Measure the outside diameter
shall be external visual inspection. A maximum number of two and thickness or length of the specimen as applicable at 73.4 6
internal defects per square foot of plate and one foot length of 1.8°F (23 6 1°C) to the nearest 0.0001 in. (0.0025 mm). All
rod and tubular bar are allowed. Clusters of defects less than measurements shall be done on the centerline and 90° from the
⁄32in. (0.8 mm) diameter are to be counted as a single defect. center line for plate. Also take measurements
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