1、Designation:D543615(Reapproved 2020)Standard Specification forCast Poly(Methyl Methacrylate)Plastic Rods,Tubes,andShapes1This standard is issued under the fixed designation D5436;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the ye
2、ar 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.Scope*1.1 This specification covers poly(
3、methyl methacrylate)rods,tubes,and other shapes produced by casting or machiningcast blanks.This specification does not apply to heat-formedand molded or extruded parts and shapes,or sections that aremade by assembling or joining two or more pieces.NOTE1The properties included in this specification
4、are those requiredto identify the types and grades of materials covered.There may be otherrequirements necessary to identify particular characteristics.1.2 The values stated in SI units are to be regarded asstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,assoc
5、iated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE2There is no known ISO equivalent to this standard.1.4 This international standard w
6、as developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced
7、Documents2.1 ASTM Standards:2D542 Test Method for Index of Refraction of TransparentOrganic PlasticsD570 Test Method for Water Absorption of PlasticsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of Pl
8、asticsUnder Flexural Load in the Edgewise PositionD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1003 Test Method for Haze and Luminous Transmittanceof Transparent PlasticsD1600 Terminology forAbbreviated Terms Re
9、lating to Plas-ticsD3892 Practice for Packaging/Packing of PlasticsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Terminology3.1 The terminology used in this specification is in accor-dance with Terminology D883 and Terminology D1600.4.Classificat
10、ion4.1 TypesThis specification covers two types of castmethacrylate plastics:4.1.1 Type UVAMaterial having ultraviolet-lightabsorbingproperties as shown in Table 1.4.1.2 Type UVTMaterial not subject to the light-absorbingproperties shown in Table 1.4.2 FinishCastings may be specified with the follow
11、ingfinishes:4.2.1 Finish 1Rods,tubes,and shapes having a smoothsurface finish obtained either in the casting process or byhighly polishing the surface.4.2.2 Finish 2Rods,tubes,and shapes having a rough,unfinished surface which may be frosted,abraded,sanded,machined,or as-cast.NOTE3The sawed ends of
12、Finish 1 and Finish 2 rods,tubes,andshapes are not polished.5.General Requirements5.1 Finish 1 and Finish 2 cast tubes are subject to thefollowing permissible variations from the specified dimen-sions:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct re
13、sponsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Dec.1,2020.Published December 2020.Originallyapproved in 1993.Last previous edition approved in 2015 as D5436 15.DOI:10.1520/D5436-15R20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact
14、 ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohoc
15、ken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organizati
16、on Technical Barriers to Trade(TBT)Committee.5.1.1 Cast tubes shall be specified with either Type A orType B wall thickness tolerances as listed in Table 2.Type Atolerances are specified for applications where wall thickness iscritical to performance,otherwise Type B is generally speci-fied.5.1.2 Cast tubes are subject to the outside-diameter toler-ances listed in Table 3.5.1.3 Cut-to-size lengths of cast tube are subject to thelength tolerances listed in Table 4.5.2 Finish 1 and Finish 2 cast r
