1、Designation: D4634 11aD4634 16Standard Classification System and Basis for Specification forStyrene-Maleic Anhydride Molding and Extrusion Materials(S/MA)1This standard is issued under the fixed designation D4634; the number immediately following the designation indicates the year oforiginal adoptio
2、n 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1
3、. Scope*1.1 This classification system covers styrene-maleic anhydride materials suitable for molding or extrusion. This classificationsystem does not apply to alloys or blends of styrene-maleic anhydride materials with non-elastomeric thermoplastics.Styrene-maleic anhydride materials, being thermop
4、lastic, are reprocessable and recyclable. This classification system allows forthe use of those materials provided that all the specific requirements of this classification system are met.1.2 The properties included in this standard are those required to identify the compositions covered. Other requ
5、irementsnecessary to identify particular characteristics important to specialized applications are to be specified by using the suffixes as givenin Section 5.1.3 This classification system and subsequent line call out (specification) are intended to provide means of calling out propertiesof plastic
6、materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Materials shouldbe selected by those having expertise in the plastics field after careful consideration of the design and the performance requiredof the part, the environment to which it will
7、be exposed, the fabrication process to be employed, costs involved, and the inherentproperties of the material other than those covered by this classification system.1.4 The values stated in SI units are to be regarded as the standard.1.5 The following precautionary caveat pertains only to the test
8、methods portion, Section 11, of this classification system. 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 health practices and determine the applicability
9、of regulatory limitations priorto use.NOTE 1There is no known ISO equivalent to this standard.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 Pr
10、operties of PlasticsD648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise PositionD790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating MaterialsD883 Terminology Relating to PlasticsD1525 Test Method for Vica
11、t Softening Temperature of PlasticsD1600 Terminology for Abbreviated Terms Relating to PlasticsD3641 Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion MaterialsD3892 Practice for Packaging/Packing of PlasticsD4000 Classification System for Specifying Plastic Materi
12、als1 This classification system is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Sept. 1, 2011April 1, 2016. Published September 2011April 2016. Originally approved in 1986. Last pre
13、vious edition approved in 2011 asD4634 - 11.D4634 - 11a. DOI: 10.1520/D4634-11A.10.1520/D4634-16.2 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 Docume
14、nt Summary page on the ASTM website.This document 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 rec
15、ommends that users consult prior editions as appropriate. 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 C
16、700, West Conshohocken, PA 19428-2959. United States1D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products (Withdrawn2015)3E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications2.2 Military Standard:4MIL-
17、STD-1916 DOD Preferred Methods for Acceptance of Product2.3 Underwriters Laboratories Standard:5UL 94 Standard for Tests for Flammability for Parts in Devices and Appliances3. Terminology3.1 The terminology used in this classification system is in accordance with Terminologies D883 and D1600.4. Clas
18、sification4.1 Styrene-maleic anhydride materials are classified into groups according to their use either for injection molding, or forextrusion. These groups are subdivided into classes and grades, as shown in Table S/MA.NOTE 2An example of this classification system is as follows: The designation
19、S/MA 211 would indicate:S/MA = Styrene-maleic anhydride,2 = injection-molding resin (group),1 = general purpose (class),1 = requirements given in Table S/MA (grade).4.1.1 To facilitate the incorporation of future or special materials, the “other/unspecified” category (0) for group, class, andgrade i
20、s shown in Table S/MA. The basic properties can be obtained from Tables A and B as they apply (see 4.3).TABLE S/MA Requirements for Natural Color OnlyGroup Description Class Description Grade DescriptionTensileStrengthA(D638) min,MPaFlexuralModulusB(D790)min,MPaIzodImpactStrengthC(D256)min, J/mVicat
21、SofteningPointD(D1525)min, C1 Crystal 1 general purpose 10 other45.3000.10.120.2 high-heat resistant 1 45 2900 10 1300 other . . . .0 other 0 other . . . .2 Impact-modified,molding1 general purpose 1230 other403330.220021002000.140170200.115115115.2 high-impact 120 other4534.22002200.500300.115120.3
22、 high-heat resistant 1230 other353330.250022002200.12021080.135125125.4 plating 10 other30.2000.150.120.5 FR 120 other2822.19001800.13070.115115.0 other 0 other . . . .3 Impact modified,extrusion1 general purpose 1230 other403530.250023002200.140170200.115115115.2 high-heat resistant 120 other3330.2
23、2002200.21080.125125.3 FR 12282219001800130701151150 other 0 other . . . .0 Other 0 other 0 other . . . .A Tensile strength determined on 3.2-mm thick injection-molded D638, Type I specimen, tested at 5 mm/min.B Flexural modulus determined on centrally-loaded D638, Type I tensile bar, 2-in. span, ta
24、ngent, Method 1, 1.3 mm/s.C Izod impact strength determined on 12.5 by 3.2-mm injection molded specimen. The specimen shall be obtained from the central section of a D638, Type I tensile bar.3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from Standa
25、rdization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.5 Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http:/.D4634 162D Vicat softening point shall be 1-kg load, Rate B, 12.5
26、 by 3.2-mm injection-molded specimen obtained from the central section of a D638, Type I tensile bar.D4634 163TABLE A Detail Requirements for Reinforced S/MA MaterialsDesig-nationGradeProperty Cell Limits0 1 2 3 4 5 6 7 8 91 Tensile StrengthAD638,MPa, minUnspecified 40 50 60 70 80 90 100 120 B2 Flex
27、ural ModulusCD790,MPa, minUnspecified 3500 4500 5500 6500 7500 8500 10 500 14 000 B3 Izod Impact StrengthDD256,J/m, minUnspecified 20 50 100 150 200 250 300 350 B4 Heat DeflectionTemperatureED648,C, minUnspecified 90 100 110 120 130 150 170 190 B5 To be determined . . . . . . . . . .A Tensile streng
28、th shall be determined on 3.2-mm thick injection-molded D638, Type I specimen, tested at 5 mm/min.B Specific value appears on drawing or contract, or both.C Flexural modulus shall be determined on centrally-loaded D638, Type I tensile bar, 2-in. span, tangent, Method 1, 1.3 mm/s.D Izod impact streng
29、th shall be determined on 12.5 by 3.2-mm injection-molded specimen.The specimen shall be obtained from the central portion of a D638,Type I tensilebar.E Heat-deflection temperature: 1.8-MPa load, 12.5 by 3.2-mm injection molded specimen.TABLE B Detail Requirements for Unreinforced S/MA MaterialsDesi
30、g-nationGradeProperty 0 1 2 3 4 5 6 7 8 91 Tensile StrengthAD638,MPa, minUnspecified 20 30 40 50 60 70 80 90 B2 Flexural ModulusCD790,MPa, minUnspecified 1800 2000 2200 2400 2600 2800 3000 3200 B3 Izod Impact StrengthDD256,J/m, minUnspecified 20 50 100 150 200 250 300 350 B4 Vicat SofteningTemperatu
31、reED1525, C, minUnspecified 90 100 110 120 130 150 170 190 B5 To be determined . . . . . . . . . .A Tensile strength determined on 3.2-mm thick injection-molded D638, Type I specimen, tested at 5 mm/min.B Specific value appears on drawing or contract, or both.C Flexural modulus determined on a centr
32、ally-loaded D638, Type I tensile bar, 2-in. span, tangent, Method 1, 1.3 mm/s.D Izod impact strength determined on 12.5 by 3.2-mm injection-molded specimen. The specimen shall be obtained from the central portion of a D638, Type 1 tensile bar.E Vicat softening point shall be 1-kg load, Rate B, 12.5
33、by 3.2-mm injection-molded specimen obtained from the central section of a D638, Type I tensile bar.4.2 Reinforced versions of the materials are classified in accordance with Table A.4.2.1 A single letter shall be used for the major reinforcement or combination, or both, along with two numbers which
34、 indicatethe percentage of addition by mass with the tolerances as tabulated asin Table 1follows:Symbol Material ToleranceC carbon 2 %G glass-reinforced 2 %L lubricants (for example, PTFE)graphite, silicone, and molybdenumdisulfideBy agreement between sup-plier and userM mineral-reinforced 2 %R comb
35、inations of reinforcements orfillers, or both3 % for total reinforce-mentNOTE 3This part of the system uses percent of reinforcements or additives, or both, in the control of the modified basic material. The types andpercentages of reinforcements and additives should be shown on the suppliers techni
36、cal data sheet unless this information is proprietary in nature. Ifnecessary, additional control of these reinforcements and additives can be accomplished by the use of the suffix part of the system, Section 5.4.2.2 Specific requirements for reinforced, filled, or lubricated materials shall be shown
37、 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.TABLE 1 Reinforcement-FillerA SymbolsB and TolerancesSymbol Material ToleranceC carbon 2 %G glass-re
38、inforced 2 %L lubricants (for example, PTFE)graphite, silicone, and molybdenumdisulfideBy agreement betweensupplier and userM mineral-reinforced 2 %R combinations of reinforcements orfillers, or both3 % for total reinforcementAAsh content of filled, or reinforced material, or both, is determined usi
39、ng eitherTest Method D5630 or ISO 3451-1 where applicable.BAdditional symbols will be added to this table as required.D4634 1644.2.2.1 Although the values listed are necessary to include the range of properties available in existing materials, users shouldnot infer that every possible combination of
40、 the properties exists or can be obtained.4.2.3 When the grade of the basic material is not known, or is not important, the use of “0” grade classification shall be usedfor reinforced materials in this system.NOTE 4An example of a reinforced styrene-maleic anhydride of this classification system is
41、as follows: The designation S/MA210G30A22450 wouldindicate the following, with the material requirements from Table A:S/MA 210 = Styrene-maleic anhydride, molding resin, general-purposeG30 = Glass reinforced at 30 % nominal (see 4.2.1),A = Table A for Property Requirements,2 = 30 MPa Tensile Strengt
42、h, min,2 = 2000 MPa Flexural Modulus, min,4 = 150 J/M Izod Impact Strength, min,5 = 130C Heat-Deflection Temperature, min, and0 = Unspecified.If no properties are specified, the designation would be S/MA 210G30A00000.4.3 Table B has been incorporated into this specification to facilitate the classif
43、ication of special materials where Table S/MAor Table A does not reflect the required properties. Table B shall be used in the same manner as Table A.NOTE 5An example of a special material using this classification system is as follows: The designation S/MA310B54220 would indicate thefollowing, with
44、 the material requirements from Table B.S/MA 310 = Styrene-maleic anhydride, extrusion resin, general-purpose,B = Table B Property Requirements,5 = 60 MPa Tensile Strength, min,4 = 2400 MPa Flexural Modulus, min,2 = 50 J/m Izod Impact Strength, min,2 = 100C Vicat Softening Point, min, and0 = Unspeci
45、fied.NOTE 6Mechanical properties of pigmented or colored S/MAmaterials can differ from the mechanical properties of natural S/MAmaterial, dependingon the choice of colorants and the concentration. The main property affected is ductility, as illustrated by a reduction in Izod impact strength and tens
46、ileelongation values. If specific properties of pigmented S/MA materials are necessary, prior testing between the materials supplier and end user should beinitiated. Once these agreements are reached, a classification using Table B should be employed to ensure proper property compliance.5. Suffixes5
47、.1 When additional requirements are needed that are not covered in Table S/MA by the basic requirements or cell-tablerequirements, they shall be indicated through the 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 requir
48、ements asappropriate. Additional suffixes will be added to that classification system as test methods and requirements are developed andrequested.6. Basic Requirements6.1 Basic requirements from property or cell tables, as they apply, are always in effect unless these requirements are supersededby s
49、pecific suffix requirements, which always take precedence.7. General Requirements7.1 The material composition shall be uniform and shall conform to the requirements specified herein. in Tables S/MA, A, B,and suffix requirements as they apply. The color and form of the material shall be as specified in the purchase order or contract.Specification changes due to the effects of colorants shall be noted by both parties and, where necessary, covered by suffixes.8. Detail Requirements8.1 Test specimens and testing parameters for the various materials s
