ASTM D4634-2016 Standard Classification System and Basis for Specification for Styrene-Maleic Anhydride Molding and Extrusion Materials (S MA)《苯乙烯-马来酸酐成型和挤压材料 (S MA) 规格的标准分类系统和基础》.pdf
《ASTM D4634-2016 Standard Classification System and Basis for Specification for Styrene-Maleic Anhydride Molding and Extrusion Materials (S MA)《苯乙烯-马来酸酐成型和挤压材料 (S MA) 规格的标准分类系统和基础》.pdf》由会员分享,可在线阅读,更多相关《ASTM D4634-2016 Standard Classification System and Basis for Specification for Styrene-Maleic Anhydride Molding and Extrusion Materials (S MA)《苯乙烯-马来酸酐成型和挤压材料 (S MA) 规格的标准分类系统和基础》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
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
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