1、Designation:D420317Standard Specification for and Basis for Specifications forStyrene-Acrylonitrile(SAN)Injection and ExtrusionMaterials1This standard is issued under the fixed designation D4203;the number immediately following the designation indicates the year oforiginal adoption or,in the case of
2、 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specificat
3、ion covers unfilled,filled,and reinforcedstyrene acrylonitrile(SAN)materials suitable for injectionmolding and extrusion.1.2 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 pa
4、rts.It is not intended for the selection 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,t
5、hecosts involved,and the inherent properties of the material otherthan those covered by this standard.1.3 The properties included in this standard are thoserequired to identify the compositions covered.Other require-ments necessary to identify particular characteristics importantto specialized appli
6、cations are to be specified using the suffixesspecified in Section 5.1.4 The values stated in SI units are to be regarded as thestandard.The values in parentheses are given for informationonly.1.5 The following precautionary caveat pertains only to thetest methods portion,Section 11,of this specific
7、ation:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.NOTE1This standard
8、 and ISO 19064-1 and ISO 4894-2 address thesame subject matter,but differ in technical content.Although this standardand ISO 19064-1 and ISO 4894-2 differ in approach or detail,dataobtained using either are technically equivalent.1.6 This international standard was developed in accor-dance with inte
9、rnationally 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:2D256 Tes
10、t Methods for Determining the Izod PendulumImpact Resistance of PlasticsD618 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 PositionD790 Test Methods for Flexu
11、ral Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion Plastomet
12、erD1525 Test Method for Vicat Softening Temperature ofPlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2584 Test Method for Ignition Loss of Cured ReinforcedResinsD3641 Practice for Injection Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD3892 Practice for
13、 Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi-alsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility
14、 of Subcommittee D20.15 on ThermoplasticMaterials.15.03).Current edition approved Aug.1,2017.Published August 2017.Originallyapproved in 1989.Last previous edition approved in 2012 as D4203-12.DOI:10.1520/D4203-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Cust
15、omer 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 194
16、28-2959.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 Technical Barriers to Trade(TBT)Committee.1 E105 Practice for Probability Sampling of MaterialsIEEE/ASTM SI-10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System2.2 ISO Standar
