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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. NOTE 1—There is no known ISO equivalent to this standard. 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.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D4066-13(2019) Referenced Document
ASTM D149 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
ASTM D150 Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D1600 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D256 Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics*, 2023-03-15 Update
ASTM D257 Standard Test Methods for DC Resistance or Conductance of Insulating Materials
ASTM D3418 Standard Test Method for Transition Temperatures of Polymers By Differential Scanning Calorimetry
ASTM D3641 Standard Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials
ASTM D3892 Standard Practice for Packaging/Packing of Plastics
ASTM D4000 Standard Classification System for Specifying Plastic Materials*, 2023-03-15 Update
ASTM D5630 Standard Test Method for Ash Content in Thermoplastics
ASTM D618 Standard Practice for Conditioning Plastics for Testing*, 2021-07-15 Update
ASTM D6260 Standard Test Method for Gravimetric Determination of Carbon Black in Nylon Materials (PA)
ASTM D638 Standard Test Method for Tensile Properties of Plastics
ASTM D648 Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position*, 2024-04-21 Update
ASTM D6779 Standard Classification System for and Basis of Specification for Polyamide Molding and Extrusion Materials (PA)*, 2023-03-15 Update
ASTM D789 Standard Test Methods for Determination of Relative Viscosity and Moisture Content of Polyamide (PA)
ASTM D790 Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials*, 2024-04-21 Update
ASTM D792 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
ASTM D883 Standard Terminology Relating to Plastics*, 2024-02-01 Update
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ISO 307 Plastics — Polyamides — Determination of viscosity number