ASTM D5138-16

Standard Classification System and Basis for Specification for Liquid Crystal Polymers Molding and Extrusion Materials (LCP)

SCOPE
1.1 This classification system covers liquid crystal polymeric (LCP) materials suitable for injection molding and extrusion. This classification system allows the use of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered, or reprocessed, or a combination thereof, provided that the requirements as stated in this classification system are met. It is the responsibility of the supplier and the buyer of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered, or reprocessed, or a combination thereof, to ensure compliance.  
1.2 The properties included in this classification system are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are allowed. These shall be agreed upon between the user and the supplier, by using suffixes as given in Section 5.  
1.3 This classification system and subsequent line callout (specification) are intended to be a means of calling out plastic materials used in the fabrication of end-use items or parts. It is not intended for the selection of materials. Material selection can be made by those having expertise in the plastics field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification system.  
1.4 The values stated in SI units are to be regarded as standard.  
1.5 The following precautionary caveat pertains only to the test method portion, Section 11, of this classification system:  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 known ISO equivalent to this standard.

General Information

• Status: Historical
• Publication Date: 31-Mar-2016
• ICS: 31.120 - Electronic display devices
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5138 − 16
Standard Classification System and Basis for Specification for
Liquid Crystal Polymers Molding and Extrusion Materials
1
(LCP)
This standard is issued under the fixed designation D5138; 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.
1. Scope* health practices and determine the applicability of regulatory
limitations prior to use.
1.1 This classification system covers liquid crystal poly-
meric (LCP) materials suitable for injection molding and
NOTE 1—There is no known ISO equivalent to this standard.
extrusion. This classification system allows the use of liquid
2. Referenced Documents
crystal polymers that are recycled, reconstituted, recycled-
2
regrind, recovered, or reprocessed, or a combination thereof,
2.1 ASTM Standards:
provided that the requirements as stated in this classification
D256 Test Methods for Determining the Izod Pendulum
system are met. It is the responsibility of the supplier and the
Impact Resistance of Plastics
buyer of liquid crystal polymers that are recycled,
D618 Practice for Conditioning Plastics for Testing
reconstituted, recycled-regrind, recovered, or reprocessed, or a
D638 Test Method for Tensile Properties of Plastics
combination thereof, to ensure compliance.
D648 Test Method for Deflection Temperature of Plastics
Under Flexural Load in the Edgewise Position
1.2 The properties included in this classification system are
D790 Test Methods for Flexural Properties of Unreinforced
those required to identify the compositions covered. Other
and Reinforced Plastics and Electrical Insulating Materi-
requirements necessary to identify particular characteristics
als
important to specialized applications are allowed. These shall
D883 Terminology Relating to Plastics
be agreed upon between the user and the supplier, by using
D1238 Test Method for Melt Flow Rates of Thermoplastics
suffixes as given in Section 5.
by Extrusion Plastometer
1.3 This classification system and subsequent line callout
D1600 Terminology for Abbreviated Terms Relating to Plas-
(specification) are intended to be a means of calling out plastic
tics
materials used in the fabrication of end-use items or parts. It is
D3418 Test Method for Transition Temperatures and Enthal-
not intended for the selection of materials. Material selection
pies of Fusion and Crystallization of Polymers by Differ-
can be made by those having expertise in the plastics field after
ential Scanning Calorimetry
careful consideration of the design and the performance
D3641 Practice for Injection Molding Test Specimens of
required of the part, the environment to which it will be
Thermoplastic Molding and Extrusion Materials
exposed, the fabrication process to be employed, the costs
D3835 Test Method for Determination of Properties of
involved, and the inherent properties of the material other than
Polymeric Materials by Means of a Capillary Rheometer
those covered by this classification system.
D3892 Practice for Packaging/Packing of Plastics
1.4 The values stated in SI units are to be regarded as
D4000 Classification System for Specifying Plastic Materi-
standard.
als
D5630 Test Method for Ash Content in Plastics
1.5 The following precautionary caveat pertains only to the
D7209 Guide for Waste Reduction, Resource Recovery, and
test method portion, Section 11, of this classification system:
Use of Recycled Polymeric Materials and Products (With-
This standard does not purport to address all of the safety
3
drawn 2015)
concerns, if any, associated with its use. It is the responsibility
E29 Practice for Using Significant Digits in Test Data to
of the user of this standard to establish appropriate safety and
Determine Conformance with Specifications
1 2
This classification system 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 April 1, 2016. Published April 2016. Originally the ASTM website.
3
approved in 1990. Last previous edition approved in 2011 as D5138 - 11. DOI: The last approved version of this historical standard is referenced on
10.1520/D5138-16. www.astm.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
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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: D5138 − 11 D5138 − 16
Standard Classification System and Basis for Specification for
Liquid Crystal Polymers Molding and Extrusion Materials
1
(LCP)
This standard is issued under the fixed designation D5138; 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.
1. Scope*
1.1 This classification system covers liquid crystal polymeric (LCP) materials suitable for injection molding and extrusion. This
classification system allows the use of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered, or
reprocessed, or a combination thereof, provided that the requirements as stated in this classification system are met. It is the
responsibility of the supplier and the buyer of liquid crystal polymers that are recycled, reconstituted, recycled-regrind, recovered,
or reprocessed, or a combination thereof, to ensure compliance.
1.2 The properties included in this classification system are those required to identify the compositions covered. Other
requirements necessary to identify particular characteristics important to specialized applications are allowed. These shall be
agreed upon between the user and the supplier, by using suffixes as given in Section 5.
1.3 This classification system and subsequent line callout (specification) are intended to be a means of calling out plastic
materials used in the fabrication of end-use items or parts. It is not intended for the selection of materials. Material selection can
be made by those having expertise in the plastics field after careful consideration of the design and the performance required of
the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent
properties of the material other than those covered by this classification system.
1.4 The values stated in SI units are to be regarded as standard.
1.5 The following precautionary caveat pertains only to the test method portion, Section 11, of this classification system: 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 known ISO equivalent to this classification system.standard.
2. Referenced Documents
2
2.1 ASTM Standards:
D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
D618 Practice for Conditioning Plastics for Testing
D638 Test Method for Tensile Properties of Plastics
D648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
D883 Terminology Relating to Plastics
D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3418 Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential
Scanning Calorimetry
D3641 Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials
D3835 Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer
1
This classification system 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 Sept. 1, 2011April 1, 2016. Published September 2011April 2016. Originally approved in 1990. Last previous edition approved in 20062011 as
D5138 - 06.D5138 - 11. DOI: 10.1520/D5138-11.10.1520/D5138-16.
2
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.
*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
1

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D5138 − 16
D3892 Practice for Packaging/Packing of Plastics
D4000 Classification System for
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