ASTM D5138-11

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 classification system.

General Information

• Status: Historical
• Publication Date: 31-Aug-2011
• ICS: 31.120 - Electronic display devices
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.15 - Thermoplastic Materials

Relations

• Replaces: ASTM D5138-06 - Standard Classification System for Liquid Crystal Polymers (LCP)
• Effective Date: 01-Sep-2011
• Referred By: ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
• Effective Date: 01-Sep-2011

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 −11
StandardClassification 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.Anumber 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 classification
extrusion. This classification system allows the use of liquid
system.
crystal polymers that are recycled, reconstituted, recycled-
regrind, recovered, or reprocessed, or a combination thereof,
2. Referenced Documents
provided that the requirements as stated in this classification
2
2.1 ASTM Standards:
system are met. It is the responsibility of the supplier and the
D256Test Methods for Determining the Izod Pendulum
buyer of liquid crystal polymers that are recycled,
Impact Resistance of Plastics
reconstituted, recycled-regrind, recovered, or reprocessed, or a
D618Practice for Conditioning Plastics for Testing
combination thereof, to ensure compliance.
D638Test Method for Tensile Properties of Plastics
1.2 The properties included in this classification system are
D648Test Method for Deflection Temperature of Plastics
those required to identify the compositions covered. Other
Under Flexural Load in the Edgewise Position
requirements necessary to identify particular characteristics
D790Test Methods for Flexural Properties of Unreinforced
important to specialized applications are allowed. These shall
and Reinforced Plastics and Electrical Insulating Materi-
be agreed upon between the user and the supplier, by using
als
suffixes as given in Section 5.
D883Terminology Relating to Plastics
1.3 This classification system and subsequent line callout D1238Test Method for Melt Flow Rates of Thermoplastics
(specification) are intended to be a means of calling out plastic by Extrusion Plastometer
materials used in the fabrication of end-use items or parts. It is D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
not intended for the selection of materials. Material selection
tics
canbemadebythosehavingexpertiseintheplasticsfieldafter D3418Test Method for Transition Temperatures and En-
careful consideration of the design and the performance
thalpies of Fusion and Crystallization of Polymers by
required of the part, the environment to which it will be
Differential Scanning Calorimetry
exposed, the fabrication process to be employed, the costs
D3641Practice for Injection Molding Test Specimens of
involved, and the inherent properties of the material other than
Thermoplastic Molding and Extrusion Materials
those covered by this classification system.
D3835Test Method for Determination of Properties of
Polymeric Materials by Means of a Capillary Rheometer
1.4 The values stated in SI units are to be regarded as
D3892Practice for Packaging/Packing of Plastics
standard.
D4000Classification System for Specifying Plastic Materi-
1.5 The following precautionary caveat pertains only to the
als
test method portion, Section 11, of this classification system:
D5630Test Method for Ash Content in Plastics
This standard does not purport to address all of the safety
D7209Guide for Waste Reduction, Resource Recovery, and
concerns, if any, associated with its use. It is the responsibility
Use of Recycled Polymeric Materials and Products
of the user of this standard to establish appropriate safety and
E29Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1
ThisclassificationsystemisunderthejurisdictionofASTMCommitteeD20on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
2
Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2011. Published September 2011. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1990. Last previous edition approved in 2006 as D5138-06. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5138-11. 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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D5138−11
3 5
2.2 IEC and ISO Standards: 2.4 Underwriters Laboratories (UL):
IEC112Recommended Method for Determining the Com- U
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:D5138–06
Standard Classification System for Liquid Crystal Polymers
(LCP)Designation: D5138 – 11
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.Anumber 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 Thisclassificationsystemcoversliquidcrystalpolymeric(LCP)materialssuitableforinjectionmoldingandextrusion.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
responsibilityofthesupplierandthebuyerofliquidcrystalpolymersthatarerecycled,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. There may be
other 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
shouldcan 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.
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
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 March 15, 2006. Published May 2006. Originally approved in 1990. Last previous edition approved in 1999 as D5138-99a. DOI:
10.1520/D5138-06.
Current edition approved Sept. 1, 2011. Published September 2011. Originally approved in 1990. Last previous edition approved in 2006 as D5138-06. DOI:
10.1520/D5138-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] 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 – 11
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
...