1、Designation: D 4634 04Standard Specification forStyrene-Maleic Anhydride Materials (S/MA)1This standard is issued under the fixed designation D 4634; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb
2、er in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers styrene-maleic anhydride ma-terials suitable for molding or extrusion. This specificationdoes not apply to allo
3、ys or blends of styrene-maleic anhydridematerials with non-elastomeric thermoplastics. Styrene-maleicanhydride materials, being thermoplastic, are reprocessableand recyclable. This specification allows for the use of thosematerials provided that all the specific requirements of thisspecification are
4、 met.1.2 The properties included in this standard 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 thesu
5、ffixes as given in Section 5.1.3 This classification system and subsequent line call out(specification) are intended to provide means of calling outproperties of plastic materials used in the fabrication of enditems or parts. It is not intended for the selection of materials.Materials should be sele
6、cted by those having expertise in theplastics field 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, costsinvolved, and the inherent properties of the material other thanthose covere
7、d by this classification system.1.4 The values stated in SI units are to be regarded as thestandard.1.5 The following precautionary caveat pertains only to thetest methods portion, Section 11, of this specification. Thisstandard does not purport to address all of the safety concerns,if any, associat
8、ed 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 1There is no equivalent or similar ISO standard for S/MA.2. Referenced Documents2.1 ASTM Standards:2D
9、 256 Test Methods for Impact Resistance of Plastics andElectrical Insulating MaterialsD 618 Practice for Conditioning Plastics and ElectricalInsulating Materials for TestingD 638 Test Method for Tensile Properties of PlasticsD 648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load
10、D 790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating MaterialsD 883 Terminology Relating to PlasticsD 1525 Test Method for Vicat Softening Temperature ofPlasticsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 3641 Practice for Inje
11、ction Molding Test Specimens ofThermoplastic Molding and Extrusion MaterialsD 3892 Practice for Packaging/Packing of PlasticsD 4000 Classification System for Specifying Plastic Mate-rialsE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Military S
12、tandard:3MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by Attributes2.3 Underwriters Laboratories Standard:4UL 94 Standard for Tests for Flammability for Parts inDevices and Appliances3. Terminology3.1 GeneralFor definitions of technical terms pertainingto plastics used in this specific
13、ation see Terminology D 883.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved October 1, 2004. Published October 2004. Originallyapproved in 1986. Last previous edi
14、tion approved in 1999 as D 4634 - 99.2For referenced ASTM standards, 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 Standard
15、ization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.4Available from Underwriters Laboratories, Inc., Publications Stock, 333Pfingsten Road, Northbrook, IL 60062.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM In
16、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Classification4.1 Styrene-maleic anhydride materials are classified intogroups according to their use either for injection molding, orfor extrusion. These groups are subdivided into classes andgrades,
17、 as shown in Table S/MA.NOTE 2An example of this classification system is as follows: Thedesignation 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 incorporat
18、ion of future or specialmaterials, the “other/unspecified” category (0) for group, class,and grade is shown in Table S/MA. The basic properties can beobtained from Tables A and B as they apply (see 4.3).TABLE S/MA Requirements for Natural Color OnlyGroup Description Class Description Grade Descripti
19、onTensileStrengthA(D 638) min,MPaFlexuralModulusB(D 790)min,MPaIzodImpactStrengthC(D 256)min, J/mVicatSofteningPointD(D 1525)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
20、 1230 other403330.220021002000.140170200.115115115.2 high-impact 120 other4534.22002200.500300.115120.3 high-heat resistant 1230 other353330.250022002200.12021080.135125125.4 plating 10 other30.2000.150.120.5FR 120 other2822.19001800.13070.115115.0 other 0 other . . . .3 Impact modified,extrusion1 g
21、eneral purpose 1230 other403530.250023002200.140170200.115115115.2 high-heat resistant 120 other3330.22002200.21080.125125.3FR 12282219001800130701151150 other 0 other . . . .0 Other 0 other 0 other . . . .ATensile strength determined on 3.2-mm thick injection-molded D 638, Type I specimen, tested a
22、t 5 mm/min.BFlexural modulus determined on centrally-loaded D 638, Type I tensile bar, 2-in. span, tangent, Method 1, 1.3 mm/s.CIzod impact strength determined on 12.5 by 3.2-mm injection molded specimen. The specimen shall be obtained from the central section of a D 638, Type I tensilebar.DVicat so
23、ftening point shall be 1-kg load, Rate B, 12.5 by 3.2-mm injection-molded specimen obtained from the central section of a D 638, Type I tensile bar.D4634042TABLE A Detail Requirements for Reinforced S/MA MaterialsDesig-nationGradeProperty Cell Limits0 1234567891 Tensile StrengthAD 638,MPa, minUnspec
24、ified 40 50 60 70 80 90 100 120B2 Flexural ModulusCD 790,MPa, minUnspecified 3500 4500 5500 6500 7500 8500 10 500 14 000B3 Izod Impact StrengthDD 256,J/m, minUnspecified 20 50 100 150 200 250 300 350B4 Heat DeflectionTemperatureED 648,C, minUnspecified 90 100 110 120 130 150 170 190B5 To be determin
25、ed . . . . . . . . . .ATensile strength shall be determined on 3.2-mm thick injection-molded D 638, Type I specimen, tested at 5 mm/min.BSpecific value appears on drawing or contract, or both.CFlexural modulus shall be determined on centrally-loaded D 638, Type I tensile bar, 2-in. span, tangent, Me
26、thod 1, 1.3 mm/s.DIzod impact strength shall be determined on 12.5 by 3.2-mm injection-molded specimen. The specimen shall be obtained from the central portion of a D 638, TypeI tensile bar.EHeat-deflection temperature: 1.8-MPa load, 12.5 by 3.2-mm injection molded specimen.TABLE B Detail Requiremen
27、ts for Unreinforced S/MA MaterialsDesig-nationGradeProperty 0 1 2 3 4567891 Tensile StrengthAD 638,MPa, minUnspecified 20 30 40 50 60 70 80 90B2 Flexural ModulusCD 790,MPa, minUnspecified 1800 2000 2200 2400 2600 2800 3000 3200B3 Izod Impact StrengthDD 256,J/m, minUnspecified 20 50 100 150 200 250 3
28、00 350B4 Vicat Softening TemperatureED 1525, C, minUnspecified 90 100 110 120 130 150 170 190B5 To be determined . . . . . . . . . .ATensile strength determined on 3.2-mm thick injection-molded D 638, Type I specimen, tested at 5 mm/min.BSpecific value appears on drawing or contract, or both.CFlexur
29、al modulus determined on a centrally-loaded D 638, Type I tensile bar, 2-in. span, tangent, Method 1, 1.3 mm/s.DIzod impact strength determined on 12.5 by 3.2-mm injection-molded specimen. The specimen shall be obtained from the central portion of a D 638, Type 1 tensilebar.EVicat softening point sh
30、all be 1-kg load, Rate B, 12.5 by 3.2-mm injection-molded specimen obtained from the central section of a D 638, Type I tensile bar.4.2 Reinforced versions of the materials are classified inaccordance with Table A.4.2.1 A single letter shall be used for the major reinforce-ment or combination, or bo
31、th, along with two numbers whichindicate the percentage of addition by mass with the tolerancesas tabulated as follows:Symbol Material ToleranceC carbon 62%G glass-reinforced 62%L lubricants (for example, PTFE)graphite, silicone, and molybdenumdisulfideBy agreement between sup-plier and userM minera
32、l-reinforced 62%R combinations of reinforcements orfillers, or both63 % for total reinforce-mentNOTE 3This part of the system uses percent of reinforcements oradditives, or both, in the control of the modified basic material. The typesand percentages of reinforcements and additives should be shown o
33、n thesuppliers technical data sheet unless this information is proprietary innature. If necessary, additional control of these reinforcements andadditives can be accomplished by the use of the suffix part of the system,Section 5.4.2.2 Specific requirements for reinforced, filled, or lubri-cated mate
34、rials 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 necessary to includethe range of propertie
35、s available in existing materials, usersshould not infer that every possible combination of theproperties exists or can be obtained.4.2.3 When the grade of the basic material is not known, oris not important, the use of “0” grade classification shall beused for reinforced materials in this system.NO
36、TE 4An example of a reinforced styrene-maleic anhydride of thisclassification system is as follows: The designation S/MA 210G30A22450would indicate the following, with the material requirements from TableA:S/MA 210 = Styrene-maleic anhydride, molding resin, general-purposeG30 = Glass reinforced at 3
37、0 % nominal (see 4.2.1),A = Table A for Property Requirements,2 = 30 MPa Tensile Strength, min,D46340432 = 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
38、210G30A00000.4.3 Table B has been incorporated into this specification tofacilitate the classification of special materials where TableS/MA or Table A does not reflect the required properties. TableB shall be used in the same manner as Table A.NOTE 5An example of a special material using this classi
39、ficationsystem is as follows: The designation S/MA310B54220 would indicatethe following, with 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,
40、 min,2 = 50 J/m Izod Impact Strength, min,2 = 100C Vicat Softening Point, min, and0 = Unspecified.NOTE 6Mechanical properties of pigmented or colored S/MA mate-rials can differ from the mechanical properties of natural S/MA material,depending on the choice of colorants and the concentration. The mai
41、nproperty affected is ductility, as illustrated by a reduction in Izod impactstrength and tensile elongation values. If specific properties of pigmentedS/MA materials are necessary, prior testing between the materials supplierand end user should be initiated. Once these agreements are reached, aclas
42、sification using Table B should be employed to ensure proper propertycompliance.5. Suffixes5.1 When requirements are needed that are not covered inTable S/MA they shall be indicated through the use of suffixes.5.2 A list of suffixes can be found in Classification SystemD 4000 (Table 3) and may be us
43、ed for additional requirementsas appropriate. Additional suffixes will be added to thatclassification system as test methods and requirements aredeveloped and requested.6. Basic Requirements6.1 Basic requirements from property or cell tables, as theyapply, are always in effect unless these requireme
44、nts aresuperseded by specific suffix requirements, which always takeprecedence.7. General Requirements7.1 The material composition shall be uniform and shallconform to the requirements specified herein. The color andform of the material shall be as specified in the purchase orderor contract. Specifi
45、cation changes due to the effects of colo-rants shall be noted by both parties and, where necessary,covered by suffixes.8. Detail Requirements8.1 Test specimens and testing parameters for the variousmaterials shall conform to the requirements prescribed inTables S/MA, A, and B, and suffix requiremen
46、ts as they apply.8.2 Observed or calculated values obtained from analysis,measurement, or test shall be rounded off to the nearest unitin the last right-hand place of figures used in expressing thespecified limiting value, in accordance with the rounding-offmethod of Practice E 29. The value obtaine
47、d is compareddirectly with the specified limiting value. Conformance ornonconformance with the specification is based on this com-parison.9. Sampling9.1 The materials shall be sampled in accordance with asampling procedure statistically adequate to satisfy the require-ments of 12.4. A lot of resin s
48、hall be considered as a unit ofmanufacture as prepared for shipment and may consist of ablend of two or more “production runs” or batches of material.10. Specimen Preparation10.1 Physical property requirements in Table S/MA arebased on injection molded specimens 3.2 mm thick. Testspecimens shall be
49、molded in accordance with PracticeD 3641.10.2 Group 3 (extrusion) materials may be compressionmolded or machined from extruded sheet.11. Test Methods11.1 The following specimen conditioning and test methodsare required:11.2 Condition test specimens in standard laboratory atmo-sphere in accordance with Procedure A (40/23/50) of PracticeD 618 before performing the required tests. Specimens will notbe annealed.11.3 Perform all tests in the standard laboratory atmosphere(23/50) in accordance with Practice D 618.11.4 Tensile Strength (Maximum Stress)Test MethodD 638, Type 1, 3
