ASTM D6779-06e1
(Classification)Standard Classification System for Polyamide Molding and Extrusion Materials (PA)
Standard Classification System for Polyamide Molding and Extrusion Materials (PA)
SCOPE
1.1 This classification system covers polyamide materials suitable for molding and extrusion. Some of these compositions are also suitable for application from solution.
1.2 This classification system allows for the use of recycled polyamide materials provided that the requirements as stated in this classification system 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 classification system 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 .
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 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.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 The following precautionary caveat pertains only to the test methods 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 requirements prior to use.Note 1
This classification system is similar to ISO 1874-1/-2,although the technical content is significantly different.
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Standards Content (Sample)
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Designation: D 6779 – 06
Standard Classification System for
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Polyamide Molding and Extrusion Materials (PA)
This standard is issued under the fixed designation D 6779; 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 (e) indicates an editorial change since the last revision or reapproval.
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e NOTE—Editorially added Group 13 to Table PA in May 2006.
NOTE 1—This classification system is similar to ISO 1874-1/-2,
1. Scope*
although the technical content is significantly different.
1.1 This classification system covers polyamide materials
suitable for molding and extrusion. Some of these composi- 2. Referenced Documents
tions are also suitable for application from solution. 2
2.1 ASTM Standards:
1.2 This classification system allows for the use of recycled
D 257 Test Methods for DC Resistance or Conductance of
polyamidematerialsprovidedthattherequirementsasstatedin
Insulating Materials
this classification system are met. The proportions of recycled
D 789 Test Methods for Determination of Solution Viscosi-
material used, as well as the nature and amount of any
ties of Polyamide (PA)
contaminant, however, cannot be covered practically in this
D 792 TestMethodsforDensityandSpecificGravity(Rela-
specification.
tive Density) of Plastics by Displacement
1.3 The properties included in this classification system are
D 883 Terminology Relating to Plastics
thoserequiredtoidentifythecompositionscovered.Theremay
D 1600 Terminology for Abbreviated Terms Relating to
be other requirements necessary to identify particular charac-
Plastics
teristics important to specialized applications. These may be
D 3892 Practice for Packaging/Packing of Plastics
specified by using the suffixes as given in Section 5.
D 4000 Classification System for Specifying Plastic Mate-
1.4 This classification system and subsequent line callout
rials
(specification) are intended to provide a means of calling out
D 6260 Test Method for Gravimetric Determination of Car-
plastic materials used in the fabrication of end items or parts. 3
bon Black in Nylon Materials (PA)
It is not intended for the selection of materials. Material
E29 Practice for Using Significant Digits in Test Data to
selection should be made by those having expertise in the
Determine Conformance with Specifications
plastic field after careful consideration of the design and the 4
2.2 IEC/ISO Standards:
performance required of the part, the environment to which it
IEC 60243-1 Electrical Strength of Insulating Materials—
will be exposed, the fabrication process to be employed, the
Test Methods—Part 1: Tests at Power Frequencies
costsinvolved,andtheinherentpropertiesofthematerialother
IEC 60250 Recommended Methods for the Determination
than those covered by this classification system.
of the Permittivity and Dielectric Dissipation Factor of
1.5 The values stated in SI units are to be regarded as
Electrical Insulating Materials at Power,Audio and Radio
standard. No other units of measurement are included in this
Frequencies Including Metre Wavelengths
standard.
ISO 75-1 Plastics—Determination of Temperature of De-
1.6 The following precautionary caveat pertains only to the
flection Under Load—Part 1: General Test Methods
test methods portion, Section 11, of this classification system.
ISO 75-2 Plastics—Determination of Temperature of De-
This standard does not purport to address all of the safety
flection Under Load—Part 2: Plastic and Ebonite
concerns, if any, associated with its use. It is the responsibility
ISO 179-1 Plastics—Determination of Charpy Impact
of the user of this standard to establish appropriate safety and
Strength—Part 1: Non-instrumented Impact Test
health practices and determine the applicability of regulatory
ISO 294-1 Plastics—Injection Moulding of Test Specimens
requirements prior to use.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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ThisclassificationsystemisunderthejurisdictionofASTMCommitteeD20on Standards volume information, refer to the standard’s Document Summary page on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic the ASTM website.
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Materials. Withdrawn.
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Current edition approved March 15, 2006. Published April 2006. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 2002. Last previous edition approved in 2005 as D 6779 - 05. 4th Floor, New York, NY 10036.
*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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