ASTM_D_4066_-_13_2019.pdf

Designation:D406613(Reapproved 2019)Standard Classification System forNylon Injection and Extrusion Materials(PA)1This standard is issued under the fixed designation D4066;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis standard is maintained in order to support products that must utilize ASTM D4066 in theproduct definition.This is necessary because there are some differences between the material propertytest requirements of ASTM D4066 and ASTM D6779,Standard Classification System for and Basisof Specification for Polyamide Molding and Extrusion Materials(PA).There are also differencesbetween the two specifications in some of the Group/Class/Grade callouts.Designers of new productsare urged to use ASTM D6779 rather than ASTM D4066.1.Scope1.1 This classification system covers nylon materials suit-able for injection molding and extrusion.Some of thesecompositions are also suitable for compression molding andapplication from solution.1.2 The properties included in this classification system arethose required to identify the compositions covered.There maybe other requirements necessary to identify particular charac-teristics important to specialized applications.These may bespecified 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 outplastic materials used in the fabrication of end items or parts.It is not intended for the selection of materials.Materialselection should be made by those having expertise in theplastic field after careful consideration of the design and theperformance required of the part,the environment to which itwill be exposed,the fabrication process to be employed,thecosts involved,and the inherent properties of the material otherthan those covered by this classification system.1.4 The values stated in SI units are to be regarded as thestandard.1.5 The following precautionary caveat pertains only to thetest methods portion,Section 11,of this classification system.This standard does not purport to address all of the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety,health,and environmental practices and determine the appli-cability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.NOTE2This classification system is being revised to include interna-tional 4-mm specimens and test procedures as the standard for compli-ance.The 3.2-mm specimens;test methods;and Tables PA,A,and B areincluded in Appendix X3 as a reference for those wishing to use them.Itis recommended that the material manufacturer be consulted on allcall-outs against this classification system.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load in the Edgewise Position1This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Nov.1,2019.Published November 2019.Originallyapproved in 1982.Last previous edition approved in 2013 as D4066-13.DOI:10.1520/D4066-13R19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Te