Standard Classification System for Nylon Injection and Extrusion Materials (PA)

ABSTRACT
This classification system covers nylon injection and extrusion materials. Nylon materials are classified into groups according to their composition. Groups are further classified into classes and grades. Grades are identified by a single letter that indicates the reinforcement or filler used and two digits, in multiples of 5, which indicate the nominal quantity in weight percent. Specific requirements for variations of nylon materials shall be shown by a six-character designator. Suffixes shall be used for those properties not covered by basic requirements. Specific suffix requirements shall always take precedence over basic requirements. Tensile strength, flexural strength, Izod impact resistance, deflection temperature, and density shall be done on test pieces based on injection molded ISO 3167 type multipurpose test specimens. Conditioning, preparation, testing, inspection, packaging, and marking shall be in conformance to the requirements in this standard classification system.
SCOPE
1.1 This classification system covers nylon materials suitable for injection molding and extrusion. Some of these compositions are also suitable for compression molding and application from solution.
1.2 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 5.
1.3 This classification system and subsequent line call-out (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.
1.4 The values stated in SI units are to be regarded as the standard.
1.5 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 limitations prior to use.Note 1—This classification system is similar to ISO 1874-1/-2 1993, although the technical content is significantly different.Note 2—This classification system is being revised to include international 4-mm specimens and test procedures as the standard for compliance. The 3.2-mm specimens; test methods; and Tables PA, A, and B are included in Appendix X3 as a reference for those wishing to use them. It is recommended that the material manufacturer be consulted on all call-outs against this classification system.

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Historical
Publication Date
09-Aug-2001
Technical Committee
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ASTM D4066-01a - Standard Classification System for Nylon Injection and Extrusion Materials (PA)
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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: D 4066 – 01a
Standard Classification System for
1
Nylon Injection and Extrusion Materials (PA)
This standard is issued under the fixed designation D 4066; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * 2. Referenced Documents
1.1 This classification system covers nylon materials suit- 2.1 ASTM Standards:
able for injection molding and extrusion. Some of these D 149 Test Method for Dielectric Breakdown Voltage and
compositions are also suitable for compression molding and Dielectric Strength of Electrical Insulating Materials at
2
application from solution. Commercial Power Frequencies
1.2 The properties included in this classification system are D 150 Test Methods for A-C Loss Characteristics and
thoserequiredtoidentifythecompositionscovered.Theremay Permittivity (Dielectric Constant) of Solid Electrical Insu-
2
be other requirements necessary to identify particular charac- lation
teristics important to specialized applications. These may be D 256 Test Methods for Determining the Izod Pendulum
3
specified by using the suffixes as given in Section 5. Impact Resistance of Plastics
1.3 This classification system and subsequent line call-out D 257 Test Methods for D-C Resistance or Conductance of
2
(specification) are intended to provide a means of calling out Insulating Materials
3
plastic materials used in the fabrication of end items or parts. D 618 Practice for Conditioning Plastics for Testing
3
It is not intended for the selection of materials. Material D 638 Test Method for Tensile Properties of Plastics
selection should be made by those having expertise in the D 648 Test Method for Deflection Temperature of Plastics
3
plastic field after careful consideration of the design and the Under Flexural Load in the Edgewise Position
performance required of the part, the environment to which it D 789 Test Methods for Determination of Relative Viscos-
3
will be exposed, the fabrication process to be employed, the ity, and Moisture Content of Polyamide (PA)
costsinvolved,andtheinherentpropertiesofthematerialother D 790 TestMethodsforFlexuralPropertiesofUnreinforced
than those covered by this classification system. and Reinforced Plastics and Electrical Insulating Materi-
3
1.4 The values stated in SI units are to be regarded as the als
standard. D 792 TestMethodsforDensityandSpecificGravity(Rela-
3
1.5 The following precautionary caveat pertains only to the tive Density) of Plastics by Displacement
3
test methods portion, Section 11, of this classification system. D 883 Terminology Relating to Plastics
This standard does not purport to address all of the safety D 1600 Terminology for Abbreviated Terms Relating to
3
concerns, if any, associated with its use. It is the responsibility Plastics
4
of the user of this standard to establish appropriate safety and D 1898 Practice for Sampling of Plastics
health practices and determine the applicability of regulatory D 1999 Guide for Selection of Specimens and Test Param-
5
limitations prior to use. eters for International Commerce
D 3418 Test Method for Transition Temperatures of Poly-
NOTE 1—This classification system is similar to ISO 1874-1/-2 1993,
6
mers by Differential Scanning Calorimetry
although the technical content is significantly different.
D 3641 Practice for Injection Molding Test Specimens of
NOTE 2—This classification system is being revised to include interna-
6
Thermoplastic Molding and Extrusion Materials
tional 4-mm specimens and test procedures as the standard for compli-
6
ance. The 3.2-mm specimens; test methods; and Tables PA, A, and B are
D 3892 Practice for Packaging/Packing of Plastics
included in Appendix X3 as a reference for those wishing to use them. It
is recommended that the material manufacturer be consulted on all
call-outs against this classification system.
1 2
ThisclassificationsystemisunderthejurisdictionofASTMCommitteeD20on Annual Book of ASTM Standards, Vol 10.01.
3
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Annual Book of ASTM Standards, Vol 08.01.
4
Materials (Section D20.15.09). Discontinued; see 1997 Annual Book of ASTM Standards, Vol 08.01.
5
Current edition approved August 10, 2001. Published October 2001. Originally Discontinued; see 1999 Annual Book of ASTM Standards, Vol 08.01.
6
published as D 4066 – 82. Last previous edition D 4066 – 01. Annual Book of ASTM Standards, Vol 08.02.
*A Summary of Changes section appears at the end of this standard.
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