ASTM D6261-98(2003)
(Specification)Standard Specification for Extruded and Compression Molded Basic Shapes Made from Thermoplastic Polyester (TPES)
Standard Specification for Extruded and Compression Molded Basic Shapes Made from Thermoplastic Polyester (TPES)
ABSTRACT
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. Each type of thermoplastic polyester shape may be categorized into one of several grades as follows: grade 1 - general purpose-extruded or compression molded product made using only 100 % virgin thermoplastic polyester resin and grade 2 - recycled-extruded or compression molded product made using any amount up to 100 % recycled thermoplastic polyester plastics. Tensile stress break, elongation at break, and tensile modulus shall be tested to meet the requirements prescribed.
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 plastics² (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 pertains only to the test method portions 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.
Note 1—There is no similar or equivalent ISO Standard.
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Standards Content (Sample)
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Designation: D6261 – 98 (Reapproved 2003)
Standard Specification for
Extruded and Compression Molded Basic Shapes Made
from Thermoplastic Polyester (TPES)
This standard is issued under the fixed designation D6261; 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.
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 D256 Test Methods for Determining the Izod Pendulum
Impact Resistance of Plastics
1.1 This specification covers requirements and test methods
D618 Practice for Conditioning Plastics for Testing
for the material, dimensions, and workmanship, and the prop-
D638 Test Method for Tensile Properties of Plastics
erties of extruded and compression molded plate, rod and
D790 Test Methods for Flexural Properties of Unreinforced
tubular bar manufactured from thermoplastic polyester.
and Reinforced Plastics and Electrical Insulating Materials
1.2 The properties included in this specification are those
D883 Terminology Relating to Plastics
required for the compositions covered Requirements necessary
D3892 Practice for Packaging/Packing of Plastics
to identify particular characteristics important to specialized
D4507 Specification for Thermoplastic Polyester (TPES)
applications may be described by using the classification
Unfilled and Reinforced Material
system given in Section 4.
2 D4000 Classification System for Specifying Plastic Materi-
1.3 This specification allows the use of recycled plastics
als
(see Section 4).
D5033 Guide for Development of ASTM Standards Relat-
1.4 The values are stated in inch-pound units and are
ing to Recycling and Use of Recycled Plastics
regarded as the standard in all property and dimensional tables.
D5927 Classification System for Thermoplastic Polyester
For reference purposes, SI units are also included in Table 1
(TPES) Injection and Extrusion Materials Based on ISO
and Table S-TPES only.
Test Methods
1.5 The following precautionary caveat pertains only to the
2.2 ANSI Standard:
test method portions sections of this specification. This stan-
Z1.4-1993 Sampling Procedures and Tables for Inspection
dard does not purport to address all of the safety concerns, if
by Attributes
any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
3. Terminology
practices and determine the applicability of regulatory limita-
3.1 Definitions:
tions prior to use.
3.1.1 For definitions of other technical terms pertaining to
NOTE 1—There is no similar or equivalent ISO Standard.
plastics used in this specification, see Terminology D883 or
Guide D5033.
2. Referenced Documents
3.2 Definitions of Terms Specific to This Standard:
2.1 ASTM Standards:
3.2.1 plate, n—flat stock ⁄4 in. (6.4 mm) or greater.
3.2.2 recycled-plastic shape, n—a product made from up to
100 % recycled plastic.
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic 3.2.3 rod, n—an extruded solid cylindrical shape with a
Materials. 1
minimum diameter of ⁄8 in. (3.2 mm).
Current edition approved March 10, 2003. Published May 2003. Originally
approved in 1998. Last previous edition approved in 1998 as D6261 - 98. DOI:
10.1520/D6261-98R03.
As defined in Guide D5033.
3 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Withdrawn. The last approved version of this historical standard is referenced
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM on www.astm.org.
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6261 – 98 (2003)
3.2.4 tubular bar, n—an extruded annular shape with mini- 4.5.1 Examples:
mum inside diameter of ⁄8 in. (9.6 mm) and minimum wall 4.5.1.1 Example 1—Product made from general purpose
thickness of ⁄16 in. (1.6 mm). PBT
CELL CALLOUT: S-TPES0111
4. Classification and Material
S-TPES01 = Product made from PBT in accordance with Table
4.1 Product shape and size as defined in the applicable
S-TPES
purchase order.
1 = Unfilled class
1 = General purpose grade product
4.2 Thisspecificationcoversproductextrudedandcompres-
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 D4507 or Specifica-
PET
tion D5927 callouts where applicable.
CELL CALLOUT: S-TPES0211
4.2.1 The type of thermoplastic polyester shape product
S-TPES02 = Product made from PET in accordance with Table
maybecategorizedbytype,gradeandclassdependingonresin
S-TPES
and filler compositions as defined in Table 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, TablesAand 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
(single-letter) will be used for the major reinforcement or
7. Dimensional Requirements
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
C Carbon and graphite fiber 62%
delineated in Tables A and B.
reinforced
7.3 Tubular bar dimensions shall be supplied in the unfin-
G Glass-reinforced
< 15 % glass content 62%
ished condition, unless otherwise specified at time of order,
> 15 % glass content 63%
sufficient to finish to the nominal dimension ordered.
L Lubricants (for example, by agreement between the supplier
PTFE, graphite and and the user 7.4 The maximum allowable camber or bow or both, shall
silicone
be within the limits referenced in Tables A and B.
M Mineral 62%
R Combinations of rein- 6 3 % for the total reinforcement
8. Workmanship, Finish and Appearance
forcements or fillers, or
both
8.1 Appearance—The resin material color is white to off-
4.5 Callout Designation—A one-line system shall be used white. The product color shall be as published by the shapes
to specify thermoplastic polyester materials covered by this manufacturer. They shall be uniform in color throughout the
specification. The system uses pre-defined cells to refer to thickness. Specific colors and color matching only as agreed to
specific aspects of this specification as illustrated below: by order. Physical properties may be affected by other colors.
D6261 – 98 (2003)
8.2 Finish—All products shall be free of blisters, wrinkles, ticestoalengthof1000 60.005in.(25 60.13mm).Eachend
cracks, gouges and defects that restrict commercial use of the of the specimen shall have a machined surface.
product. Special surface finish shall be supplied only when 12.2.1.2 Plate—Each specimen shall consist of a 2 in. (50
specified in the purchase order or contract. mm)diameterdiscmachinedfromtheflat(diametershallequal
8.3 Defects—All products shall be free of voids, dirt, test specimen thickness with a minimum of 2.0 in. (50 mm)).
foreign material and embedded particles exceeding ⁄32 in. (0.8 The same care shall be used in the machining as described in
mm) maximum diameter as defined in 8.3.1. 12.1.1. The thickness of the specimen shall be that of the
8.3.1 The criteria for determining the internal cleanliness originalflatfromwhichitwascut,nomachiningbeingdoneon
shall be external visual inspection.Amaximum number of two the top or bottom faces.
internal defects per square foot of plate and one foot length of 12.2.2 Testing Procedure—Measure the outside diameter
rod and tubular bar are allowe
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