1、Designation: D 4203 07Standard Specification forStyrene-Acrylonitrile (SAN) Injection and ExtrusionMaterials1This standard is issued under the fixed designation D 4203; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of last reapproval. Asuperscript 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*1.1 This specification covers unfilled, f
3、illed, and reinforcedstyrene acrylonitrile (SAN) materials suitable for injectionmolding and extrusion.1.2 This specification is not intended for the selection ofmaterials, but only as a means of calling out materials to beused in the manufacture of parts. Materials are to be selectedby personnel wi
4、th expertise in the plastics field where theeconomics, the environment to be encountered, the inherentproperties of the materials, the part design, the part perfor-mance required, and the manufacturing process to be employedall enter into the selection.1.3 The properties included in this specificati
5、on are thoserequired to identify the compositions covered. There may beother requirements necessary to identify particular character-istics important to specialized applications. These will beagreed upon between the user and the supplier, by using thesuffixes specified in Section 7.1.4 The values st
6、ated in SI units are to be regarded as thestandard. The values in parentheses are given for informationonly (see IEEE/ASTM SI 10.)1.5 The following precautionary caveat pertains only to thetest methods portion, Section 15, of this specification: Thisstandard does not purport to address all of the sa
7、fety 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.NOTE 1Although this specification and ISO 4894/1 differ in approachor detail
8、, data obtained using either are technically equivalent.2. Referenced Documents2.1 ASTM Standards:2D 256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD 618 Practice for Conditioning Plastics for TestingD 638 Test Method for Tensile Properties of PlasticsD 648 Test Metho
9、d for Deflection Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD 790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating MaterialsD 792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by Displacement
10、D 883 Terminology Relating to PlasticsD 1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD 1525 Test Method for Vicat Softening Temperature ofPlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 2584 Test Method for Ignition Loss of Cured ReinforcedResin
11、sD 3641 Practice for Injection Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD 3892 Practice for Packaging/Packing of PlasticsD 4000 Classification System for Specifying Plastic Mate-rialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Spec
12、ificationsE 105 Practice for Probability Sampling Of MaterialsIEEE/ASTM SI10 Standard for Use of the InternationalSystem of Units (SI): The Modern Metric System2.2 ISO Standards:3ISO 75 Plastics and EboniteDetermination of Tempera-ture of Deflection Under Load1This specification is under the jurisdi
13、ction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.15.03).Current edition approved March 1, 2007. Published March 2007. Originallyapproved in 1989. Last previous edition approved in 2000 as D 4203 - 00.2For referenced ASTM standar
14、ds, 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.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, N
15、ew York, NY 10036, http:/www.ansi.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ISO 178 PlasticsDetermination of Flexural Properties ofRigid PlasticsISO 180/1A P
16、lasticsDetermination of Izod ImpactStrength of Rigid MaterialsISO 294 PlasticsInjection Moulding Test Specimens ofThermoplastic MaterialsISO 306 PlasticsDetermination of Vicat Softening Tem-perature of ThermoplasticsISO 527 PlasticsDetermination of Tensile PropertiesISO 1133 PlasticsDetermination of
17、 the Melt Flow Rate ofThermoplasticsISO 1183 PlasticsMethods for Determining the Densityand Relative Density of Non-Cellular PlasticsISO 4894/1 PlasticsStyrene/Acrylonitrile (SAN) Copoly-mer Molding and 4894/2 Extrusion Materials Part 1:Designation, Part 2: Determination of Properties3. Terminology3
18、.1 DefinitionsDefinitions are in accordance with Termi-nology D 883 and abbreviations are in accordance with Termi-nology D 1600, unless otherwise indicated. The abbreviationfor styrene-acrylonitrile plastics is SAN.3.2 Definitions of Terms Specific to This Standard:3.2.1 lota unit of manufacture; m
19、ay consist of a blend oftwo or more production runs or batches of material.4. Classification4.1 SAN compounds are typically general-purpose materi-als used in either molding or extrusion processes and applica-tions. There is currently no group, class, or grade distinctionsand no basic property table
20、 given.NOTE 2Where no basic property table exists, the generic familydesignation will be followed by three zeros, for example: SAN000.4.1.1 They are usually grouped as reinforced or unrein-forced. Therefore, SAN materials are classified by Table A forreinforced materials and Table B for unreinforced
21、 materials.Specialty products such as antistatic, barrier, etc. would alsoutilize the suffix system described in Section 7.4.1.2 Each compound is given a five-digit cell classificationrepresenting the physical properties in the order in which theyare listed in the cell table.4.2 Reinforced and lubri
22、cated versions of the SAN materialsare classified in accordance with Table A, which specifies theproperties after the addition of reinforcements or lubricants atthe nominal level indicated (see 4.2.1).4.2.1 A single letter shall be used for the major reinforce-ment or combination, or both, along wit
23、h two digits thatindicate the percentage of addition by mass, with the toleranceas tabulated below:Symbol Material ToleranceC Carbon- and graphite-fiber rein-forced62%G Glass-reinforced 62%L Lubricants (PTFE, for example)graphite, silicone and molybde-num disulfideby agreement between the supplieran
24、d the userM Mineral-reinforced 62%R Combinations of reinforcementsor filler, or both63 % for the total reinforcementNOTE 3This part of the system uses percent of reinforcements oradditives, or both, in the callout of the modified basic material. The typesand percentages of reinforcements and additiv
25、es should be shown on thesuppliers technical data sheet unless this information is proprietary innature. If necessary, additional callout of these reinforcements andadditives can be accomplished by the use of the suffix part of the system,as described in Section 7.4.2.2 Specific requirements for rei
26、nforced, filled, or lubri-cated materials shall be shown by a six-character designation.The designation shall consist of the letter A and the five digitscomprising the cell numbers for the property requirements inthe order in which they appear in Table A.4.2.2.1 Although the values listed are necess
27、ary to includethe range of properties available in existing materials, usersshould not infer that every possible combination of theproperties exists or can be obtained.NOTE 4An example of this classification for a reinforced SAN is asfollows:The designation SAN000G30A34421:SAN000 = Styrene acrylonit
28、rile material,G30 = Glass reinforced at 30 % nominal level,A = Table A for property requirements,3 = % AN, 30 %, min,4 = Deflection temperature under load, 105C, min,4 = Specific gravity, 1.6, min,2 = Tensile strength, 80 MPa, min, and1 = Flexural modulus, 3000 MPa, min,If no properties are specifie
29、d, the designation would be SAN000G30A00000.4.3 Table B classifies all unreinforced SAN materials. TableB shall be used in the same manner as Table A.NOTE 5An example of this classification for an unreinforced SAN isas follows:The designation SAN000B22320 indicates:SAN000 = Styrene acrylonitrile mat
30、erial,B = Cell Table B, property requirements,2 = % AN, 20 %, min,2 = Vicat softening temperature, 100C, min,3 = Flow rate, 10 g/10 min, min2 = Tensile strength, 60 MPa, min, and0 = Flexural modulus, unspecified,4.3.1 Mechanical properties of pigmented or colored SANmaterials can differ from the mec
31、hanical properties of naturalSAN material, depending on the choice and concentration ofcolorants. The main property affected is ductility, as illustratedby a reduction in Izod impact strength and tensile-elongationvalues. If specific properties of pigmented SAN materials arenecessary, prior testing
32、between the materials supplier and enduser should be initiated. Once these agreements are reached, aclassification using Cell Table B should be employed to ensureproper property compliance.4.4 ISO test methods and correlated cell values have beenincluded for informational purposes. They have been pr
33、ovidedfor those international users wishing to determine the corre-sponding ISO test values for a particular SAN callout.NOTE 6Using the example ASTM callout in Note 5, (ISO)SAN000B22320 would indicate:(ISO) = ISO line-property requirements,SAN000 = Styrene acrylonitrile material,B = Table B,2 = % A
34、N, 20%, min,2 = Vicat softening point, 95C, min,3 = Flow rate, 25 g/10 min, min,2 = Tensile strength, 60 MPa, min,0 = Flexural modulus, unspecified.D4203072NOTE 7Internationally, ANSI has been working with ISO to harmo-nize specification and designation documents in three specific areas,including SA
35、N. A correlation was carried out and has been appended forinformation purposes. This study provided the basis for the correlated ISOvalues found in the cell tables and the novel approach of being able todetermine a specified products property requirements by either ASTM orISO test methods.TABLE A SA
36、N Compounds (Reinforced)DesignationOrder NumberPropertyCell Limits0 1234591 AN Content, % AN, min Unspecified 10 20 30 40 50A(ISO, % AN, min) (Unspecified) (10) (20) (30) (40) (50)A2 Deflection temperature under load, ASTM D 648,C, minBUnspecified 90 95 100 105 110A(ISO 75, C, min) (Unspecified) (90
37、) (95) (100) (105) (110)A3 Specific gravity, ASTM D 792, min Unspecified 1.1 1.2 1.4 1.6 1.8A(ISO 1183, min) (Unspecified) (1.1) (1.2) (1.4) (1.6) (1.8)A4 Tensile strength, ASTM D 638, MPa, minBUnspecified 60 80 100 120 140A(ISO 527, MPa, min) (Unspecified) (60) (80) (100) (120) (140)A5 Flexural tan
38、gent modulus, ASTM D 790 MPa, minBUnspecified 3000 4500 6000 7500 9000A(ISO 178, MPa, min) (Unspecified) (2800) (4200) (5600) (7000) (8500)AAIf specific value is required, it must appear on drawing or contract, or both.BMPa 3 145 = psi.TABLE B SAN Compounds (Unreinforced)DesignationOrder NumberPrope
39、rtyCell Limits01234591 AN Content,% AN, min Unspecified 10 20 30 40 50A(ISO, % AN, min) (Unspecified) (10) (20) (30) (40) (50)A2 Vicat softening point, ASTM D 1525, C, min Unspecified 90 100 105 110 120A(ISO 306, C, min) (Unspecified) (85) (95) (100) (105) (110)A3 Flow rate, ASTM D 1238, g/10 minute
40、s, min Unspecified 2 5 10 15 20A(ISO 1133, g/10 minutes, min) (Unspecified) (5) (15) (25) (40) (50)A4 Tensile strength, ASTM D 638, MPa, minBUnspecified 50 60 70 80 95A(ISO 527, MPa, min) (Unspecified) (50) (60) (70) (80) (95)A5 Flexural tangent modulus, ASTM D 790, MPa, minBUnspecified 2600 3000 34
41、00 3800 4200A(ISO 178, MPa, min) (Unspecified) (2400) (2800) (3200) (3600) (3900)AAIf specific value is required, it must appear on drawing or contract, or both.BMPa 3 145 = psi.5. Ordering Information5.1 The SAN compound shall be as agreed upon betweenthe purchaser and seller, and the following inf
42、ormation shouldbe included in the purchase order:5.1.1 Quantity and packaging;5.1.2 Cell classification, as described in Table A or Table B;5.1.3 Color reference should be made to color chip number,if available;5.1.4 Form, for example, pellets, granules, or powder; and5.1.5 This ASTM designation, “D
43、 4203,” and the year ofissue.6. Materials and Manufacture6.1 The SAN compounds are produced by the polymeriza-tion of the monomers acrylonitrile and styrene.6.2 The SAN compound shall be uniform in composition, asdefined by the cell classification, and shall be of size, shape,and color, as specified
44、 by the product specification, or purchaseorder or contract.6.3 Colorants may be added in concentrate form to the SANcompounds.Additives necessary for compounding may also bepresent.7. Suffx Requirements Suffix Requirements7.1 When requirements are needed that supersede or supple-ment the cell-table
45、 requirements, they shall be specifiedthrough the use of suffixes. In general, the first suffix letterindicates the special requirement needed and the second letterindicates the condition or test method, or both, with a three-digit number indicating the specific requirement. The suffixesthat may be
46、used are listed in the Suffix Symbols andRequirements Table 3 of Classification System D 4000.8. Basic Requirements8.1 Basic requirements from the cell tables, as they apply,are always in effect unless these requirements are supersededby specific suffix requirements, which always take precedence.9.
47、General Requirements9.1 The material composition shall be uniform and shallconform to the requirements specified herein. Specificationchanges due to the effects of colorants shall be noted by thematerials supplier and the end user and, where necessary, shallbe covered by suffixes.10. Detail Requirem
48、ents10.1 Test specimens and testing parameters for the materialsshall conform to the requirements prescribed in Cell Table A,and Table B, and suffix requirements as they apply.10.2 Observed or calculated values obtained from analysis,measurement, or test shall be rounded off to the nearest unit inth
49、e last right-hand place of figures used in expressing theD4203073specified limiting value in accordance with the roundingmethod of Practice E29.11. Sampling11.1 Sample the materials in accordance with the samplingprocedure prescribed in Practice E 105. Statistical samplingshall be considered as an acceptable alternative.12. Number of Tests12.1 One set of specimens, as prescribed in the test meth-ods, shall be considered sufficient for each lot. The averageresult for the specimens tested shall meet the requirements ofthe applicable Table when tested in acco
