ASTM D5927-14

Standard Classification System for and Basis for Specifications for Thermoplastic Polyester (TPES) Injection and Extrusion Materials Based on ISO Test Methods

ABSTRACT
This specification is intended to provide a callout system for thermoplastic polyester (TPES) injection and extrusion materials, both virgin and recycled, based on ISO test methods. However, the proportions of recycled material used, and the nature and amount of any contaminant, as well as the selection of materials cannot be covered practically in this specification. Materials are classified into groups according to their composition, and are further subdivided into classes and grades as specified. Individual groups shall be identified in accordance to performance properties as to tensile strength, tensile modulus, Charpy impact strength, deflection temperature, melt flow rate, and density.
SCOPE
1.1 This classification system covers thermoplastic polyester materials suitable for molding or extrusion.  
1.2 This classification system allows for the use of recycled thermoplastic polyester materials provided that the requirements as stated in this classification system and subsequent line callout (specification) are met. The proportions of recycled material used, as well as the nature and amount of any contaminant, however, cannot be covered practically in this specification.  
1.3 The properties included in this standard are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be specified by using the suffixes as given in Section 5.  
1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastic field only after careful consideration of the design and performance required of the part, the environment to which it will be exposed, the fabrication process to be used, the costs involved, and the inherent properties of the material other than those covered by this specification.  
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.6 The following hazards caveat pertains only to the test methods portion, Section 11, 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: This standard and ISO 7792-1:2012 and ISO 7792-2:2012 address the same subject matter, but differ in technical content.

General Information

• Status: Historical
• Publication Date: 30-Nov-2014
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaces: ASTM D5927-09 - Standard Classification System for Thermoplastic Polyester (TPES) Injection and Extrusion Materials Based on ISO Test Methods
• Effective Date: 01-Dec-2014
• Replaced By: ASTM D5927-17 - Standard Classification System for and Basis for Specifications for Thermoplastic Polyester (TPES) Injection and Extrusion Materials Based on ISO Test Methods
• Effective Date: 01-Mar-2017
• Referred By: ASTM D6261-14(2022) - Standard Specification for Extruded and Compression Molded Basic Shapes Made from Thermoplastic Polyester (TPES)
• Effective Date: 01-Dec-2014
• Referred By: ASTM C1047-19 - Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
• Effective Date: 01-Dec-2014
• Referred By: ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
• Effective Date: 01-Dec-2014

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5927 −14
Standard Classification System for and
Basis for Specifications for
Thermoplastic Polyester (TPES) Injection and Extrusion
Materials Based on ISO Test Methods
This standard is issued under the fixed designation D5927; 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 material classification system is intended to provide a callout system for thermoplastic
polyester materials based on ISO test methods.
1. Scope* 1.6 The following hazards caveat pertains only to the test
methods portion, Section 11, of this specification: This stan-
1.1 This classification system covers thermoplastic polyes-
dard does not purport to address all of the safety concerns, if
ter materials suitable for molding or extrusion.
any, associated with its use. It is the responsibility of the user
1.2 This classification system allows for the use of recycled
of this standard to establish appropriate safety and health
thermoplastic polyester materials provided that the require-
practices and determine the applicability of regulatory limita-
mentsasstatedinthisclassificationsystemandsubsequentline
tions prior to use.
callout (specification) are met. The proportions of recycled
NOTE 1—This standard and ISO 7792-1:2012 and ISO 7792-2:2012
material used, as well as the nature and amount of any
address the same subject matter, but differ in technical content.
contaminant, however, cannot be covered practically in this
specification.
2. Referenced Documents
1.3 The properties included in this standard are those
2.1 ASTM Standards:
required to identify the compositions covered. Other require-
D883 Terminology Relating to Plastics
ments necessary to identify particular characteristics important
D1600 TerminologyforAbbreviatedTermsRelatingtoPlas-
to specialized applications are to be specified by using the
tics
suffixes as given in Section 5.
D3892 Practice for Packaging/Packing of Plastics
1.4 This classification system and subsequent line callout D4000 Classification System for Specifying Plastic Materi-
(specification) are intended to provide a means of calling out
als
plastic materials used in the fabrication of end items or parts. D7209 Guide for Waste Reduction, Resource Recovery, and
It is not intended for the selection of materials. Material
Use of Recycled Polymeric Materials and Products
selection can be made by those having expertise in the plastic E29 Practice for Using Significant Digits in Test Data to
field only after careful consideration of the design and perfor-
Determine Conformance with Specifications
mance required of the part, the environment to which it will be
2.2 IEC and ISO Standards:
exposed, the fabrication process to be used, the costs involved,
IEC 112 Recommended Method for Determining the Com-
and the inherent properties of the material other than those
parative Tracking Index of Solid Insulation Materials
covered by this specification.
IEC 243 Recommended Methods of Test for Electrical
1.5 The values stated in SI units are to be regarded as the Strength of Solid Insulating Materials at Power Frequen-
cies
standard. The values given in parentheses are for information
only. ISO 62 Plastics—Determination of Water Absorption
1 2
This specification is under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2014. Published December 2014. Originally the ASTM website.
approved in 1996. Last previous edition approved in 2009 as D5927 – 09. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D5927-14. 4th Floor, New York, NY 10036, http://www.ansi.org.
*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
D5927−14
ISO 75-1:2013 Plastics—Determination of Temperature of subdivided into classes and grades, as indicated in the basic
Deflection Under Load—Part 1: General Test Methods property table (Table TPES).
ISO 75-2:2013 Plastics—Determination of Temperature of
NOTE 2—An example of this classification system is as follows. The
Deflection Under Load—Part 2: Plastics and Ebonite
designation TPES 0113 would indicate:
ISO 179-1:2010 Plastics—Determination of Charpy Impact
TPES = thermoplastic polyester as found in Terminology
Strength
D1600,
01 (group) = PBT,
ISO 291:2008 Plastics—Standard Atmospheres for Condi-
1 (class) = general purpose, and
tioning and Testing
3 (grade) = requirements given in Table TPES.
ISO 294-1:1996 Plastics—InjectionMouldingofTestSpeci-
4.1.1 Grades of reinforced or filled versions, or both, of the
mens of Thermoplastic Materials—Part 1: General
basicmaterialsareidentifiedbyasingleletterthatindicatesthe
Principles, Multipurpose-Test Specimens (ISO Mould
reinforcement or filler used and two digits, in multiples of five,
Type A) and Bars (ISO Mould Type B)
that indicate the nominal quantity in percent by weight. Thus,
ISO 527-1:2012 Plastics—Determination of Tensile
a letter designation G for glass reinforced and 35 for percent or
Properties—Part 1: General Principles
reinforcement, G35, specifies a material with a nominal glass
ISO 527-2:2012 Plastics—Determination of Tensile
level of 35 %. The reinforcement letter designations and
Properties—Part 2: Testing Conditions
associated tolerance levels are shown as tabulated as follows:
ISO 604 Plastics—DeterminationofCompressiveProperties
A B
TABLE Reinforcement-Filler Symbols and Tolerances
ISO 1133-2:2011 Plastics—DeterminationoftheMeltMass-
Symbol Material Tolerance
FlowRate(MFR)andtheMeltVolume-FlowRate(MVR)
of Thermoplastics—Part 2: Method for Materials Sensi- C Carbon and graphite ±2 %
EClay ±2%
tive to Time-Temperature History and/or Moisture
G Glass ±2 %
ISO 1183-1:2012 Plastics—Methods for Determining the
K Calcium carbonate ±2 %
Density of Non-Cellular Plastics—Part 1: Immersion L Lubricants (such as PTFE, depends on material and
graphite, silicone, and process—to be specified
Method, Liquid Pyknometer Method, and Titration
molybdenum disulfide)
Method
M Mineral ±2 %
ISO 1183-2:2012 Plastics—Methods for Determining the PMica ±2%
R Combinations of reinforcements ±3 %
Density of Non-Cellular Plastics—Part 2: Density Gradi-
and/or fillers
ent Column Method
S Synthetic organic ±2 %
T Talcum ±2 %
ISO 1183-3:2012 Plastics—Methods for Determining the
X Not specified To be specified
Density of Non-Cellular Plastics—Part 3: Gas Pyknom-
A
Ash content of filled and/or reinforced materials can be determined using ISO
eter Method
3451-2 where applicable.
ISO 3451-2 Plastics—Determination of Ash—Part 2: Poly- B
Additional symbols can be added to this table as required.
alkylene Terephthalates
NOTE 3—An example of this classification system for reinforced
ISO 7792-1:2012 Plastics—SaturatedPolyester(SP)Mould-
thermoplastic polyester is given as follows. The designation TPES
ing and Extrusion Materials—Part 1: Designation System
021G30 indicates the following:
and Basis for Specification
TPES = thermoplastic polyester as found in Terminology
ISO 7792-2:2012 Plastics—Polyalkylene Terephthalates—
D1600,
02 (group) = PET,
Part 2: Preparation of Test Specimens and Determination
1 (class) = unmodified, and
of Properties
G30 (grade) = nominal 30 % glass with the requirements given in
Table TPES.
2.3 Underwriters Laboratories (UL):
UL 94 Test for Flammability of Plastic Materials for Parts in
NOTE 4—This part of the classification system uses the percent of
Devices and Appliances
reinforcements or fillers, or both, in the callout of the modified base
material. The types and percentages of reinforcements and fillers are
2.4 National Technical Information Service (NTIS):
sometimes shown on the supplier’s technical data sheet. If necessary,
AD297457 Procedure and Analytical Method for Determin-
additional callout of these reinforcements and additives can be accom-
ing Toxic Gases Produced by Synthetic Compounds
plished by use of the suffix part of the system (see Section 5).
NOTE 5—Materials containing reinforcements or fillers, or both, at
3. Terminology nominal levels not in multiples of five are included in the nearest TPES
designation. For example, a material with a nominal glass content of 28 %
3.1 Definitions—The terminology used in this specification
is included with Grade G30.
is in accordance with Terminologies D883 and D1600.
NOTE 6—The ash content of filled or reinforced materials is determined
using ISO 3451-4.
4. Classification
4.2 Variations of thermoplastic polyester materials that are
4.1 Thermoplastic polyester materials are classified into
not included in Table TPES are classified in accordance with
groups according to their composition. These groups are
Table TPES and Table A or B. Table TPES is used to specify
the group of thermoplastic polyester, and TableAor B is used
to specify property requirements.
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd.,
4.2.1 Specific requirements for variations of thermoplastic
Northbrook, IL 60062-2096, http://www.ul.com.
polyester materials shall be indicated by a six-character desig-
Available from National Technical Information Service (NTIS), 5285 Port
Royal Rd., Springfield, VA 22161, http://www.ntis.gov. nator. The designation will consist of the letter “A” or “B” and
D5927−14
A
TABLE A Detailed Requirements: Reinforced or Filled Thermoplastic Polyesters
Designation
Cell Limits
Order Property
0 12345678 9
Number
C
1 Tensile strength, ISO 527-1:2012 unspecified 35 50 70 95 115 140 175 210 specify value
and ISO
B
527-2:2012, min, MPa
C
2 Tensile modulus, ISO 527-1:2012 unspecified 1 400 2 700 4 100 5 500 6 900 8 000 10 000 12 500 specify value
and ISO 527-2:2012,
D
min, MPa
C
3 Charpy impact, ISO 179-1:2010, unspecified 1.5 3.0 4.5 6.0 8.5 11.0 13.5 17.5 specify value
2E
min, kJ/m
C
4 Deflection temperature under unspecified 50 100 120 150 185 205 220 235 specify value
load at 1.8 MPa, ISO
75-1:2013 and ISO
F
75-2:2013, min, °C
5 To be determined . . . . . . . . . .
A
Itisrecognizedthatdetailedtestvalues,particularlyCharpyimpact,donotnecessarilypredictnorevencorrelatewiththeperformanceofpartsmoldedofthesematerials.
B
Tensile strength shall be determined using a Type 1A tensile specimen as described in ISO 527-2:2012. Crosshead speed shall be 5 mm/min± 20 %.
C
If a specific value is required, it must appear on the drawing or contract, or both.
D
Tensile modulus shall be determined using a Type 1A tensile specimen as described in ISO 527-2:2012 at a test speed of 1 mm/min ± 20 %.
E
The test specimen shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type 1Atensile specimen and tested as described in ISO 179:2010, Method
1eA.
F
The test specimen size shall be 80±2by10±0.2by4±0.2mm,cutfromthe center of the Type 1Atensile specimen. The requirements are based on unannealed
test specimens.
A
TABLE B Detailed Requirements: Special Thermoplastic Polyesters
Designation
Cell Limits
Order Property
0 1 2 345 678 9
Number
C
1 Tensile strength, ISO 527-1:2012 and ISO unspecified 10 30 35 40 45 50 60 80 specify value
B
527-2:2012, min, MPa
C
2 Tensile modulus, ISO 527-1:2012 and ISO unspecified 100 350 1000 1500 2000 2500 3000 4000 specify value
D
527-2:2012, min, MPa
2E C
3 Charpy impact, ISO 179:2010, min, kJ/m unspecified 2.0 3.5 5.0 8.0 13.0 18.0 25.0 50.0 specify value
C
4 Deflection temperature under load at 1.8 unspecified 30 45 60 70 80 90 100 115 specify value
MPa,
ISO 75-1:2013 and ISO 75-2:2013, min,°
F
C
5 To be determined . . . . . . . . . .
A
Itisrecognizedthatdetailedtestvalues,particularlyCharpyimpact,donotnecessarilypredictnorevencorrelatewiththeperformanceofpartsmoldedofthesematerials.
B
Tensile strength shall be determined using a Type 1A tensile specimen as described in ISO 527-2:2012. Crosshead speed shall be 50 mm/min± 10 %.
C
If a specific value is required, it must appear on the drawing or contract, or both.
D
Tensile modulus shall be determined using a Type 1A tensile specimen as described in ISO 527-2:2012 at a test speed of 1 mm/min ± 20 %.
E
The test specimen shall be 80±2by10±0.2by4±0.2mm,cutfromthe center of the Type 1Atensile specimen and tested as described in ISO 179:2010, Method
1eA.
F
The test specimen size shall be 80±2by10±0.2by4±0.2mm,cutfromthe center of theType 1Atensile specimen.The requirements are based on unannealed test
specimens.
NOTE 7—An example of a reinforced thermoplastic polyester of this
the five digits comprising the cell numbers for the property
classification system is as follows. The designation TPES
requirements in the order as they appear in Table A or B.
0310G30A22450 would indicate the following material requirements
4.2.1.1 Although the values listed are necessary to include
from Table A:
the range of properties available in existing material, not every
possible combination of the properties exists or can be ob-
tained.
4.2.2 When the grade of the basic material is not known or
is not important, the use of “0” grade classification shall be
used for materials in this system (see Note 7).
D5927−14
TABLE 1 Recommended Processing Conditions
Melt Temperature, Mold Temperature, Average Injection Hold Pressure Time, Total Cycle Time,
Material
°C °C Velocity, mm/s s s
PBT, unfilled semicrystalline 260 ± 3 80 ± 5 200 ± 100 20 ± 5 40 ± 5
PBT, filled semicrystalline 260 ± 3 80 ± 5 200 ± 100 20 ± 5 40 ± 5
PET, unfilled amorphous 285 ± 3 20 ± 5 200 ± 100 20 ± 5 40 ± 5
PET, unfilled semicrystalline 275 ± 3 135 ± 5 200± 100 20 ± 5 40 ± 5
PET, filled semicrystalline 285 ± 3 135 ± 5 200± 100 20 ± 5 40 ± 5
PET, filled semicrystalline, nucleated 285 ± 3 110 ± 5 200± 100 20 ± 5 40 ± 5
PET, filled semicrystalline, flame-retarded 275± 3 135 ± 5 200± 100 20 ± 5 40 ± 5
PET, filled semicrystalline, flame-retarded, 275 ± 3 110 ± 5 200± 100 20 ± 5 40 ± 5
nucleated
PCT, unfilled amorphous 300 ± 3 20 ± 3 200 ± 100 20 ± 5 40 ± 5
PCT, unfilled semicrystalline 300 ± 3 120 ± 5 200± 100 20 ± 5 40 ± 5
PCT, filled semicrystalline 300 ± 3 120 ± 5 200± 100 20 ± 5 40 ± 5
PEN, unfilled amorphous 300 ± 3 20 ± 3 200 ± 100 20 ± 5 40 ± 5
NOTE 8—The mechanical properties of pigmented or co
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5927 − 09 D5927 − 14
Standard Classification System for and
Basis for Specifications for
Thermoplastic Polyester (TPES) Injection and Extrusion
Materials Based on ISO Test Methods
This standard is issued under the fixed designation D5927; 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 material specification classification system is intended to provide a callout system for
thermoplastic polyester materials based on ISO test methods.
1. Scope*
1.1 This specification covers thermoplastic polyester materials suitable for molding or extrusion.
1.2 This specification allows for the use of recycled thermoplastic polyester materials provided that the requirements as stated
in this specification are met. The proportions of recycled material used, as well as the nature and amount of any contaminant,
however, cannot be covered practically in this specification.
1.3 The properties included in this specification are those required to identify the compositions covered. There may be other
requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using
the suffixes as given in Section 5.
1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic
materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should
be made by those having expertise in the plastic field after careful consideration of the design and performance required of the part,
the environment to which it will be exposed, the fabrication process to be used, the costs involved, and the inherent properties of
the material other than those covered by this specification.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 The following hazards caveat pertains only to the test methods portion, Section 11, 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—This specification is similar to ISO 7792-1:1995 and ISO 7792-2:1988, although the technical content is significantly different.
2. Referenced Documents
2.1 ASTM Standards:
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3892 Practice for Packaging/Packing of Plastics
D4000 Classification System for Specifying Plastic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 IEC and ISO Standards:
IEC 112 Recommended Method for Determining the Comparative Tracking Index of Solid Insulation Materials
IEC 243 Recommended Methods of Test for Electrical Strength of Solid Insulating Materials at Power Frequencies
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.
Current edition approved Feb. 1, 2009Dec. 1, 2014. Published February 2009December 2014. Originally approved in 1996. Last previous edition approved in 20032009
as D5927 – 03.D5927 – 09. DOI: 10.1520/D5927-09.10.1520/D5927-14.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*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
D5927 − 14
ISO 62 Plastics—Determination of Water Absorption
ISO 75-1:1993 Plastics—Determination of Temperature of Deflection Under Load—Part 1: General Test Methods
ISO 75-2:1993 Plastics—Determination of Temperature of Deflection Under Load—Part 2: Plastics and Ebonite
ISO 179-1:1993 Plastics—Determination of Charpy Impact Strength
ISO 291:1997 Plastics—Standard Atmospheres for Conditioning and Testing
ISO 294-1:1996 Plastics—Injection Moulding of Test Specimens of Thermoplastic Materials—Part 1: General Principles,
Multipurpose-Test Specimens (ISO Mould Type A) and Bars (ISO Mould Type B)
ISO 527-1:1993 Plastics—Determination of Tensile Properties—Part 1: General Principles
ISO 527-2:1993 Plastics—Determination of Tensile Properties—Part 2: Testing Conditions
ISO 604 Plastics—Determination of Compressive Properties
ISO 1133:1997 Plastics—Determination of the Melt Mass-Flow Rate (MFR) and the Melt Volume-Flow Rate (MVR) of
Thermoplastics
ISO 1183:1987 Plastics—Methods for Determining the Density and Relative Density of Non-Cellular Plastics
ISO 3451-4 Plastics—Determination of Ash—Part 2: Polyalkylene Terephthalates
ISO 7792-1:1995 Plastics—Saturated Polyester (SP) Moulding and Extrusion Materials—Part 1: Designation System and Basis
for Specification
ISO 7792-2:1988 Plastics—Polyalkylene Terephthalates—Part 2: Preparation of Test Specimens and Determination of Proper-
ties
2.3 Underwriters Laboratories (UL):
UL 94 Test for Flammability of Plastic Materials for Parts in Devices and Appliances
2.4 National Technical Information Service (NTIS):
AD297457 Procedure and Analytical Method for Determining Toxic Gases Produced by Synthetic Compounds
3. Terminology
3.1 Definitions—The terminology used in this specification is in accordance with Terminologies D883 and D1600.
4. Classification
4.1 Thermoplastic polyester materials are classified into groups according to their composition. These groups are subdivided
into classes and grades, as indicated in the basic property table (Table TPES).
NOTE 2—An example of this classification system is as follows. The designation TPES 0113 would indicate:
TPES = thermoplastic polyester as found in Terminology
D1600,
01 (group) = PBT,
1 (class) = general purpose, and
3 (grade) = requirements given in Table TPES.
4.1.1 Grades of reinforced or filled versions, or both, of the basic materials are identified by a single letter that indicates the
reinforcement or filler used and two digits, in multiples of five, that indicate the nominal quantity in percent by weight. Thus, a
letter designation G for glass reinforced and 35 for percent or reinforcement, G35, specifies a material with a nominal glass level
of 35 %. The reinforcement letter designations and associated tolerance levels are shown as tabulated as follows:
Symbol Material Tolerance
C carbon- and graphite-fiber- ±2 %
reinforced
G glass-reinforced ±2 %
L lubricants (such as PTFE, depends on material and pro-
graphite, silicone, and mo- cess—to be specified
lybdenum disulfide)
M mineral-reinforced ±2 %
R combinations of reinforce- ±3 %
ments or fillers, or both
NOTE 3—An example of this classification system for reinforced thermoplastic polyester is given as follows. The designation TPES 021G30 indicates
the following:
TPES = thermoplastic polyester as found in Terminology
D1600,
02 (group) = PET,
1 (class) = unmodified, and
G30 (grade) = nominal 30 % glass with the requirements given in
Table TPES.
NOTE 4—This part of the classification system uses the percent of reinforcements or fillers, or both, in the callout of the modified base material. The
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http://www.ul.com.
Available from National Technical Information Service (NTIS), 5285 Port Royal Rd., Springfield, VA 22161, http://www.ntis.gov.
D5927 − 14
types and percentages of reinforcements and fillers should be shown on the supplier’s technical data sheet unless they are proprietary in nature. If
necessary, additional callout of these reinforcements and additives can be accomplished by use of the suffix part of the system (see Section 5).
NOTE 5—Materials containing reinforcements or fillers, or both, at nominal levels not in multiples of five are included in the nearest TPES designation.
For example, a material with a nominal glass content of 28 % is included with Grade G30.
NOTE 6—The ash content of filled or reinforced materials may be determined using ISO 3451-4.
4.2 Variations of thermoplastic polyester materials that are not included in Table TPES are classified in accordance with Table
TPES and Table A or B. Table TPES is used to specify the group of thermoplastic polyester, and Table A or B is used to specify
property requirements.
4.2.1 Specific requirements for variations of thermoplastic polyester materials shall be indicated by a six-character designator.
The designation will consist of the letter “A” or “B” and the five digits comprising the cell numbers for the property requirements
in the order as they appear in Table A or B.
4.2.1.1 Although the values listed are necessary to include the range of properties available in existing material, users should
not infer that every possible combination of the properties exists or can be obtained.
4.2.2 When the grade of the basic material is not known or is not important, the use of “0” grade classification shall be used
for materials in this system (see Note 7).
A
TABLE A Detailed Requirements: Reinforced or Filled Thermoplastic Polyesters
Designation
Cell Limits
Order Property
0 1 2 3 4 5 6 7 8 9
Number
C
1 Tensile strength, ISO unspecified 35 50 70 95 115 140 175 210 specify value
527-1:1993 and ISO
B
527-2:1993, min, MPa
C
1 Tensile strength, ISO unspecified 35 50 70 95 115 140 175 210 specify value
527-1:2012 and ISO
B
527-2:2012, min, MPa
C
2 Tensile modulus, ISO 527-1:1993 unspecified 1 400 2 700 4 100 5 500 6 900 8 000 10 000 12 500 specify value
and ISO 527-2:1993,
D
min, MPa
C
2 Tensile modulus, ISO 527-1:2012 unspecified 1 400 2 700 4 100 5 500 6 900 8 000 10 000 12 500 specify value
and ISO 527-2:2012,
D
min, MPa
C
3 Charpy impact, ISO 179:1993, unspecified 1.5 3.0 4.5 6.0 8.5 11.0 13.5 17.5 specify value
2E
min, kJ/m
C
3 Charpy impact, ISO 179-1:2010, unspecified 1.5 3.0 4.5 6.0 8.5 11.0 13.5 17.5 specify value
2E
min, kJ/m
C
4 Deflection temperature under unspecified 50 100 120 150 185 205 220 235 specify value
load at 1.8 MPa, ISO
75-1:1993 and ISO
F
75-2:1993, min, °C
C
4 Deflection temperature under unspecified 50 100 120 150 185 205 220 235 specify value
load at 1.8 MPa, ISO
75-1:2013 and ISO
F
75-2:2013, min, °C
5 To be determined . . . . . . . . . .
A
It is recognized that detailed test values, particularly Charpy impact, maydo not necessarily predict nor even correlate with the performance of parts molded of these
materials.
B
Tensile strength shall be determined using a Type 1A tensile specimen as described in ISO 527-2:1993.527-2:2012. Crosshead speed shall be 5 mm/min± 20 %.
C
If a specific value is required, it must appear on the drawing or contract, or both.
D
Tensile modulus shall be determined using a Type 1A tensile specimen as described in ISO 527-2:1993527-2:2012 at a test speed of 1 mm/min ± 20 %.
E
The test specimen shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type 1A tensile specimen and tested as described in ISO 179:1993,179:2010,
Method 1eA.
F
The test specimen size shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type 1A tensile specimen. The requirements are based on unannealed
test specimens.
D5927 − 14
A
TABLE B Detailed Requirements: Special Thermoplastic Polyesters
Designation
Cell Limits
Order Property
0 1 2 3 4 5 6 7 8 9
Number
C
1 Tensile strength, ISO 527-1:1993 and ISO unspecified 10 30 35 40 45 50 60 80 specify value
B
527-2:1993, min, MPa
C
1 Tensile strength, ISO 527-1:2012 and ISO unspecified 10 30 35 40 45 50 60 80 specify value
B
527-2:2012, min, MPa
C
2 Tensile modulus, ISO 527-1:1993 and ISO unspecified 100 350 1000 1500 2000 2500 3000 4000 specify value
D
527-2:1993, min, MPa
C
2 Tensile modulus, ISO 527-1:2012 and ISO unspecified 100 350 1000 1500 2000 2500 3000 4000 specify value
D
527-2:2012, min, MPa
2E C
3 Charpy impact, ISO 179:1993, min, kJ/m unspecified 2.0 3.5 5.0 8.0 13.0 18.0 25.0 50.0 specify value
2E C
3 Charpy impact, ISO 179:2010, min, kJ/m unspecified 2.0 3.5 5.0 8.0 13.0 18.0 25.0 50.0 specify value
C
4 Deflection temperature under load at 1.8 unspecified 30 45 60 70 80 90 100 115 specify value
MPa,
ISO 75-1:1993 and ISO 75-2:1993, min,°
F
C
C
4 Deflection temperature under load at 1.8 unspecified 30 45 60 70 80 90 100 115 specify value
MPa,
ISO 75-1:2013 and ISO 75-2:2013, min,°
F
C
5 To be determined . . . . . . . . . .
A
ItIt is recognized that detailed test values, particularly Charpy impact, maydo not necessarily predict nor even correlate with the performance of parts molded of these
materials.
B
TensileTensile strength shall be determined using a Type 1A tensile specimen as described in ISO 527-2:1993.527-2:2012. Crosshead speed shall be 50 mm/min± 10 %.
C
IfIf a specific value is required, it must appear on the drawing or contract, or both.
D
TensileTensile modulus shall be determined using a Type 1A tensile specimen as described in ISO 527-2:1993527-2:2012 at a test speed of 1 mm/min ± 20 %.
E
TheThe test specimen shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type 1A tensile specimen and tested as described in ISO 179:1993,179:2010,
Method 1eA.
F
TheThe test specimen size shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type 1A tensile specimen. The requirements are based on unannealed
test specimens.
TABLE 1 Recommended Processing Conditions
Melt Temperature, Mold Temperature, Average Injection Hold Pressure Time, Total Cycle Time,
Material
°C °C Velocity, mm/s s s
PBT, unfilled semicrystalline 260 ± 3 80 ± 5 200 ± 100 20 ± 5 40 ± 5
PBT, filled semicrystalline 260 ± 3 80 ± 5 200 ± 100 20 ± 5 40 ± 5
PET, unfilled amorphous 285 ± 3 20 ± 5 200 ± 100 20 ± 5 40 ± 5
PET, unfilled semicrystalline 275 ± 3 135 ± 5 200± 1
...