ASTM D6261-14(2022)

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:D6261 −14 (Reapproved 2022)
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 mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers requirements and test methods
for the material, dimensions, and workmanship, and the prop-
2. Referenced Documents
erties of extruded and compression molded plate, rod and
2.1 ASTM Standards:
tubular bar manufactured from thermoplastic polyester.
D256 Test Methods for Determining the Izod Pendulum
1.2 The properties included in this specification are those
Impact Resistance of Plastics
required for the compositions covered. Use the classification
D618 Practice for Conditioning Plastics for Testing
system given in Section 4 to describe requirements necessary
D638 Test Method for Tensile Properties of Plastics
to identify particular characteristics important to specialized
D790 Test Methods for Flexural Properties of Unreinforced
applications.
and Reinforced Plastics and Electrical Insulating Materi-
1.3 This specification allows the use of recycled plastics
als
(see Section 4).
D883 Terminology Relating to Plastics
D3892 Practice for Packaging/Packing of Plastics
1.4 The values are stated in inch-pound units and are
D4507 Specification for Thermoplastic Polyester (TPES)
regarded as the standard in all property and dimensional tables.
Materials (Withdrawn 1999)
For reference purposes, SI units are also included in Table 1
D4000 Classification System for Specifying Plastic Materi-
and Table S-TPES only.
als
1.5 The following precautionary caveat pertains only to the
D5927 Classification System for andBasis for Specifications
test method portions sections of this specification. This stan-
for Thermoplastic Polyester (TPES) Injection and Extru-
dard does not purport to address all of the safety concerns, if
sion Materials Based on ISO Test Methods
any, associated with its use. It is the responsibility of the user
D7209 Guide for Waste Reduction, Resource Recovery, and
of this standard to establish appropriate safety, health, and
Use of Recycled Polymeric Materials and Products (With-
environmental practices and determine the applicability of
drawn 2015)
regulatory limitations prior to use.
3. Terminology
NOTE 1—There is no known ISO equivalent to this standard.
3.1 Definitions:
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.1.1 For definitions of other technical terms pertaining to
plastics used in this specification, see Terminology D883 or
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- Guide D7209.
3.2 Definitions of Terms Specific to This Standard:
This specification is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Materials (Section D20.15.21). contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2022. Published July 2022. Originally approved Standards volume information, refer to the standard’s Document Summary page on
in 1998. Last previous edition approved in 2014 as D6261 - 14. DOI: 10.1520/ the ASTM website.
D6261-14R22. The last approved version of this historical standard is referenced on
As defined in Guide D7209. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6261−14 (2022)
3.2.1 plate, n—flat stock ⁄4 in. (6.4 mm) or greater.
Tolerance
Symbol Material (Based on the Total Mass)
3.2.2 recycled-plastic shape, n—a product made from up to
100 % recycled plastic. C Carbon and graphite fiber ±2%
reinforced
3.2.3 rod, n—a solid cylindrical shape with a minimum
G Glass-reinforced
diameter of ⁄8 in. (3.2 mm). < 15 % glass content ± 2 %
> 15 % glass content ± 3 %
3.2.4 tubular bar, n—anannularshapewithminimuminside
L Lubricants (for example, by agreement between the supplier
3 1
PTFE, graphite and and the user
diameter of ⁄8 in. (9.6 mm) and minimum wall thickness of ⁄16
silicone
in. (1.6 mm).
M Mineral ± 2 %
R Combinations of ± 3 % for the total reinforcement
reinforcements or
4. Classification and Material
fillers, or both
4.1 Product shape and size as defined in the applicable
4.5 CalloutDesignation—Aone-linesystemshallbeusedto
purchase order.
specify thermoplastic polyester materials covered by this
specification. The system uses pre-defined cells to refer to
4.2 Thisspecificationcoversproductextrudedandcompres-
sion molded as listed in Table S-TPES. Products included in specific aspects of this specification as illustrated below:
4.5.1 Examples:
the designations reference Specification D4507 or Specifica-
tion D5927 callouts where applicable. 4.5.1.1 Example 1—Product made from general purpose
PBT
4.2.1 Categorize the type of thermoplastic polyester shape
product by type, grade, and class depending on resin and filler
CELL CALLOUT: S-TPES0111
compositions as defined in Table S-TPES.
S-TPES01 = Product made from PBT in accordance with Table
4.2.2 Use the following sections to categorize each type of
S-TPES
thermoplastic polyester shape into one of several grades: 1 = Unfilled class
1 = General purpose grade product
4.2.2.1 Grade 1—General Purpose—Extruded or compres-
4.5.1.2 Example 2—Product made from general purpose
sion molded product made using only 100 % virgin thermo-
PET
plastic polyester resin.
4.2.2.2 Grade 2—Recycled—Extruded or compression CELL CALLOUT: S-TPES0211
molded product made using any amount up to 100 % recycled
S-TPES02 = Product made from PET in accordance with Table
thermoplastic polyester plastics.
S-TPES
1 = Unfilled class
4.3 The type, class and grade is further differentiated based
1 = General purpose grade product
on dimensional stability (elevated temperature excursion test),
4.5.2 These two examples illustrate how a one-line, alpha-
Table S-TPES, and dimensional requirements, TablesAand B.
numeric sequence can identify the product composition, com-
4.4 Property Tables:
mercial parameters and physical characteristics of extruded or
4.4.1 Use Table S-TPES to describe both extruded or
compression molded product. A space must be used as a
compression molded products.
separator between the specification number and the type
4.4.2 Use Table 1 also to describe extruded or compression
designation. No separators are needed between type, class and
molded products not included in Table S-TPES via a cell
grade. When special notes are to be included, such information
callout that includes the applicable Table S-TPES thermoplas-
shall be preceded by a comma. Special tolerances must be
tic polyester type and specific properties (Designations 1
noted at time of order and are inserted after the grade in
through 7).
parentheses and preceded by a comma.
4.4.3 To facilitate the incorporation of future or special
5. Ordering Information
materials not covered by the Table S-TPES, the “as specified”
category (00) for type, class and grade is shown in the table 5.1 All shapes covered by this specification shall be ordered
with the basic properties to be obtained from Table 1, as they
using the proper callout designation (see 4.5).
apply.
6. Physical Property Requirements
4.4.4 Reinforcements and Additive Materials—A symbol
(single-letter) will be used for the major reinforcement or 6.1 The physical property values listed within this specifi-
combination, or both, along with two numbers that indicate the cation’s tables are to be considered minimum specification
percentage of addition by mass with the tolerances as tabulated values. Any requirement for specific test data for a given
below. This must be included in all Table 1 callouts. production lot shall be specified at the time of order. Use Table
D6261−14 (2022)
1 to specify physical properties for extruded or compression 11. Test Conditions
molded products not yet included in Table S-TPES.
11.1 Conditioning of Specimens—The specification values
and dimensions are based on conditioning techniques outlined
7. Dimensional Requirements
in Procedure A of Practice D618.
7.1 The type, class and grade is differentiated based on
11.2 Standard Temperature—The tests shall be conducted at
dimensional stability (elevated temperature excursion test), as
the standard laboratory temperature of 73.4 6 3.6°F (23 6
indicated in Table S-TPES.
2°C) and 50 6 10 % relative humidity.
7.2 Products shall be produced within commercial toler-
12. Test Methods
ances and with the lowest stress levels for machined parts as
delineated in Tables A and B.
12.1 Tensile stress break, elongation at break, and tensile
modulus (tangent) are in accordance with Test Method D638,
7.3 Tubular bar dimensions shall be supplied in the unfin-
at the rate of 0.2 in. (5 mm)/min.
ished condition, unless otherwise specified at time of order,
12.1.1 All plate specimens are in accordance with Test
sufficient to finish to the nominal dimension ordered.
Method D638, Type I.
7.4 The maximum allowable camber or bow or both, shall
12.1.2 All rod specimens are in accordance with Test
be within the limits referenced in Tables A and B.
Method D638.
12.1.3 AlltubularbarspecimensareinaccordancewithTest
8. Workmanship, Finish, and Appearance
Method D638.
8.1 Appearance—The resin material color is white to off-
12.2 Dimensional Stability:
white. The product color shall be as published by the shapes
12.2.1 Specimen Preparation (a Minimum of Three Test
manufacturer. They shall be uniform in color throughout the
Samples Required):
thickness. The specific colors and color matching shall only be
12.2.1.1 Rods and Tubular Bar—Prepare each specimen by
as agreed to by order. It is possible that other colors will affect
cutting a 1.5
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