1、Designation:D574018Standard Guide forWriting Material Standards in the Classification D4000 For-mat1This standard is issued under the fixed designation D5740;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、 number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis guide has been prepared to aid in the writing of material standards using the ClassificationD4000 format.The following template is i
3、ncluded which might be used directly for a draft documentsimply by filling in the blanks.See appendixes for additional explanatory information.Standard Classification System for and Basis for Specification for _ Molding and Extrusion Materials(_)1.Scope*1.1 This classification system covers _ materi
4、als suitablefor _.The inclusion or exclusion of recycledplastics in this classification system must be addressed here.1.2 The properties included in this standard are thoserequired to identify the compositions covered.Other require-ments necessary to identify particular characteristics importantto s
5、pecialized applications are to be specified by using suffixesas given in Section 5.1.3 This classification system and subsequent line callout(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 selecti
6、on of materials.Materialselection can be made by those having expertise in the plasticfield only 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 prop
7、erties of the material otherthan those covered by this standard.NOTE1Insert Note 1 here to show the appropriate ISO equivalencystatement.1.4 The following precautionary caveat pertains only to thetest method portion,Section 11,of this classification system:This standard does not purport to address a
8、ll 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.1.5 This international standard was developed in acc
9、or-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 S
10、tandards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsD5205 Classification System and B
11、asis for Specification forPolyetherimide(PEI)MaterialsD5630 Test Method for Ash Content in PlasticsD6779 Classification System for and Basis of Specificationfor Polyamide Molding and Extrusion Materials(PA)1This guide is under the jurisdiction of ASTM Committee D20 on Plastics andis the direct respo
12、nsibility of Subcommittee D20.94 on Government/IndustryStandardization.Current edition approved May 1,2018.Published June 2018.Originallyapproved in 1995.Last previous edition approved in 2016 as D5740 16.DOI:10.1520/D5740-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orconta
13、ct 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 Conshoh
14、ocken,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 Organiza
15、tion Technical Barriers to Trade(TBT)Committee.1 D7209 Guide for Waste Reduction,Resource Recovery,andUse of Recycled Polymeric Materials and Products(With-drawn 2015)3NOTE2Omit D7209 if use of recycled plastic is not allowed.E29 Practice for Using Significant Digits in Test Data toDetermine Conform
16、ance with Specifications2.2 ISO Standards:4ISO 34511 PlasticsDetermination of Ash ContentPart1:General Methods3.Terminology3.1 Except for the terms defined below,the terminologyused in this classification system is in accordance with Termi-nologies D883 and D1600.4.Classification4.1 _ materials are classified into groups according totheir composition.These groups are subdivided into classesand grades as shown in the Basic Property Table(Table _).Anexample of a basic property table can be found i
