1、Designation: D4203 12D4203 17Standard 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,
2、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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scop
3、e*1.1 This specification covers unfilled, filled, and reinforced styrene acrylonitrile (SAN) materials suitable for injection moldingand extrusion.1.2 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plasticmaterials used in the fa
4、brication of end items or parts. It is not intended for the selection of materials. Material selection can bemade by those having expertise in the plastic field only after careful consideration of the design and the performance required ofthe part, the environment to which it will be exposed, the fa
5、brication process to be employed, the costs involved, and the inherentproperties of the material other than those covered by this standard.1.3 The properties included in this standard are those required to identify the compositions covered. Other requirementsnecessary to identify particular characte
6、ristics important to specialized applications are to be specified using the suffixes specifiedin Section 5.1.4 The values stated in SI units are to be regarded as the standard. The values in parentheses are given for information only.1.5 The following precautionary caveat pertains only to the test m
7、ethods portion, Section 11, of this specification:This standarddoes not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulat
8、ory limitations prior to use.NOTE 1This standard and ISO 4894-119064-1 and ISO 4894-2 address the same subject matter, but differ in technical content.Although this standardand ISO 4894-119064-1 and ISO 4894-2 differ in approach or detail, data obtained using either are technically equivalent.1.6 Th
9、is international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (T
10、BT) Committee.2. Referenced Documents2.1 ASTM Standards:2D256 Test Methods for Determining the Izod Pendulum Impact Resistance of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of Plastics Unde
11、r Flexural Load in the Edgewise PositionD790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating MaterialsD792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Tes
12、t Method for Melt Flow Rates of Thermoplastics by Extrusion PlastometerD1525 Test Method for Vicat Softening Temperature of PlasticsD1600 Terminology for Abbreviated Terms Relating to PlasticsD2584 Test Method for Ignition Loss of Cured Reinforced Resins1 This specification is under the jurisdiction
13、 of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.15.03).Current edition approved Nov. 15, 2012Aug. 1, 2017. Published November 2012August 2017. Originally approved in 1989. Last previous edition approved in 20072012as D4203 - 07.D42
14、03 - 12. DOI: 10.1520/D4203-12.10.1520/D4203-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document
15、 is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appr
16、opriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*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 Sta
17、tes1D3641 Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion MaterialsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with Spe
18、cificationsE105 Practice for Probability Sampling of MaterialsIEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): The Modern Metric System2.2 ISO Standards:3ISO 75 PlasticsDetermination of Temperature of Deflection Under LoadISO 178 PlasticsDetermination of Flexural Propertie
19、sISO 180/1A PlasticsDetermination of Izod Impact StrengthISO 294 PlasticsInjection Moulding Test Specimens of Thermoplastic MaterialsISO 306 PlasticsThermoplastic materialsDetermination of Vicat Softening Temperature (VST)ISO 527 PlasticsDetermination of Tensile PropertiesISO 1133 PlasticsDeterminat
20、ion of the Melt Mass-Flow Rate (MFR) and Melt Volume-Flow Rate (MVR) of ThermoplasticsISO 1183 PlasticsMethods for Determining the Density of Non-Cellular PlasticsISO 48944894-2 PlasticsStyrene/Acrylonitrile (SAN) Molding and Extrusion Materials: Part 1: Designation System and Basisfor Specification
21、s, Part Moulding and Extrusion MaterialsPart 2: Preparation of Test Specimens and Determination ofPropertiesISO 19064-1 PlasticsStyrene/Acrylonitrile (SAN) Moulding and Extrusion MaterialsPart 1: Designation System and Basisfor Specifications3. Terminology3.1 The terminology used in this classificat
22、ion system is in accordance with Terminologies D883 and D1600.4. Classification4.1 SAN materials are typically general-purpose materials used in either molding or extrusion processes and applications. Thereis currently no group, class, or grade distinctions and no basic property table given.NOTE 2Wh
23、ere no basic property table exists, the generic family designation will be followed by three zeros, for example: SAN000.4.1.1 They are usually grouped as reinforced or unreinforced. Therefore, SAN materials are classified by Table Afor reinforcedmaterials and Table B for unreinforced materials. Spec
24、ialty products such as antistatic, barrier, etc. would also utilize the suffixsystem described in Section 5.4.1.2 Each compound is given a five-digit cell classification representing the physical properties in the order in which they arelisted in the cell table.4.2 Reinforced, filled, and lubricated
25、 versions of the SAN materials are classified in accordance with Table A, which specifiesthe properties after the addition of reinforcements or lubricants at the nominal level indicated (see 4.2.1).4.2.1 A single letter shall be used for the major reinforcement or combination, or both, along with tw
26、o digits that indicate thenominal quantity in percent by weight. (See Table 1.)NOTE 3This part of the system uses percent of reinforcements or additives, or both, in the callout of the modified basic material. The types andpercentages of reinforcements and additives are sometimes shown on the suppli
27、ers technical data sheet. If necessary, additional callout of thesereinforcements and additives can be accomplished by the use of the suffix part of the system, as described in Section 5.NOTE 4Materials containing reinforcements or fillers, or both, at nominal levels not in multiples of five are inc
28、luded in the nearest grade designation.For example, a material with a nominal glass fiber level of 33 % is included with a Grade G35.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Reinforcement-FillerA Symbols
29、and TolerancesBSymbol Material ToleranceC Carbon- and graphite-fiberreinforced2 %G Glass-reinforced 2 %L Lubricants (PTFE, for example)graphite, silicone andmolybdenum disulfideDepends upon material andprocessto be specified.M Mineral-reinforced 2 %R Combinations of reinforcementsor filler, or both3
30、 % for the total reinforcementAAsh content or filled and/or reinforced materials is determined using either TestMethod D5630 or ISO 3451-1 where applicable.BAdditional symbols will be added to this table as required.D4203 1724.2.2 Specific requirements for reinforced, filled, or lubricated materials
31、 shall be shown by a six-character designation. Thedesignation shall consist of the letter A and the five digits comprising the cell numbers for the property requirements in the orderin which they appear in Table A.4.2.2.1 Although the values listed are necessary to include the range of properties a
32、vailable in existing materials, users shouldnot infer that every possible combination of the properties exists or can be obtained.NOTE 5An example of this classification for a reinforced SAN is as follows:The designation SAN000G30A34421:SAN000 = Styrene acrylonitrile material,G30 = Glass reinforced
33、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 specified, the designation would be SAN000G30
34、A00000.4.3 Table B classifies all unreinforced SAN materials. Table B shall be used in the same manner as Table A.NOTE 6An example of this classification for an unreinforced SAN is as follows:The designation SAN000B22320 indicates:SAN000 = Styrene acrylonitrile material,B = Cell Table B, property re
35、quirements,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 SAN materials can differ from the mechanical properties of natural SANm
36、aterial, depending on the choice and concentration of colorants. The main property affected is ductility, as illustrated by areduction in Izod impact strength and tensile-elongation values. If specific properties of pigmented SAN materials are necessary,a classification using Cell Table B is employe
37、d.4.4 ISO test methods and correlated cell values have been included for informational purposes. They have been provided forthose international users wishing to determine the corresponding ISO test values for a particular SAN callout.NOTE 7Using the example ASTM callout in Note 6, (ISO) SAN000B22320
38、 would indicate:(ISO) = ISO line-property requirements,SAN000 = Styrene acrylonitrile material,B = Table B,2 = % AN, 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.NOTE 8Internationally, ANSI has been w
39、orking with ISO to harmonize specification and designation documents in three specific areas, includingSAN. A correlation was carried out and has been appended for information purposes. This study provided the basis for the correlated ISO values foundin the cell tables and the novel approach of bein
40、g able to determine a specified products property requirements by either ASTM or ISO test methods.TABLE A SAN Compounds (Reinforced)DesignationOrder Number PropertyCell Limits0 1 2 3 4 5 91 AN Content, % AN, min Unspecified 10 20 30 40 50 A(ISO, % AN, min) (Unspecified) (10) (20) (30) (40) (50) A(IS
41、O 4894-2, % AN, min) (Unspecified) (10) (20) (30) (40) (50) A2 Deflection temperature under load, ASTM D648,C, minBUnspecified 90 95 100 105 110 A(ISO 75, C, min) (Unspecified) (90) (95) (100) (105) (110) A3 Specific gravity, ASTM D792, min Unspecified 1.1 1.2 1.4 1.6 1.8 A(ISO 1183, min) (Unspecifi
42、ed) (1.1) (1.2) (1.4) (1.6) (1.8) A4 Tensile strength, ASTM D638, MPa, minB Unspecified 60 80 100 120 140 A(ISO 527, MPa, min) (Unspecified) (60) (80) (100) (120) (140) A5 Flexural tangent modulus, ASTM D790 MPa, minB Unspecified 3000 4500 6000 7500 9000 A(ISO 178, MPa, min) (Unspecified) (2800) (42
43、00) (5600) (7000) (8500) AA If specific value is required, it must appear on drawing or contract, or both.B MPa 145 = psi.D4203 173TABLE B SAN Compounds (Unreinforced)DesignationOrder Number PropertyCell Limits0 1 2 3 4 5 91 AN Content,% AN, min Unspecified 10 20 30 40 50 A(ISO, % AN, min) (Unspecif
44、ied) (10) (20) (30) (40) (50) A(ISO 4894-2, % AN, min) (Unspecified) (10) (20) (30) (40) (50) A2 Vicat softening point, ASTM D1525, C, min Unspecified 90 100 105 110 120 A(ISO 306, C, min) (Unspecified) (85) (95) (100) (105) (110) A3 Flow rate, ASTM D1238, g/10 minutes, min Unspecified 2 5 10 15 20
45、A(ISO 1133, g/10 minutes, min) (Unspecified) (5) (15) (25) (40) (50) A4 Tensile strength, ASTM D638, MPa, minB Unspecified 50 60 70 80 95 A(ISO 527, MPa, min) (Unspecified) (50) (60) (70) (80) (95) A5 Flexural tangent modulus, ASTM D790, MPa, minB Unspecified 2600 3000 3400 3800 4200 A(ISO 178, MPa,
46、 min) (Unspecified) (2400) (2800) (3200) (3600) (3900) AA If specific value is required, it must appear on drawing or contract, or both.B MPa 145 = psi.5. Suffix Requirements5.1 When additional requirements are needed that are not covered by the cell-table requirements, they shall be indicated throu
47、ghthe use of suffixes.5.2 A list of suffixes can be found in Classification System D4000 (Table 3) and are to be used for additional requirements asappropriate. Additional suffixes will be added to that standard as test methods and requirements are developed and requested.6. Basic Requirements6.1 Ba
48、sic requirements from the cell tables, as they apply, are always in effect unless superseded by specific suffix requirements,which always take precedence.6.2 The plastics composition shall be uniform and shall conform to the requirements specified herein.7. Detail Requirements7.1 The materials shall
49、 conform to the requirements in Tables SAN, A, and B, and suffix requirements as they apply.7.2 For purposes of determining conformance, all specified limits for a specification (line callout) based on this classificationsystem are absolute limits, as defined in Practice E29.7.2.1 With the absolute method, an observed value or a calculated value is not rounded, but is to be compared directly with thelimiting value. Conformance or nonconformance is based on this comparison.8. Sampling8.1 Sampling shall be statistically adequate to satisfy the
