1、I N D-S T D ASTM D702-L N O T I C E L 73 7779778 000237Ll 5 I AOOPlION NOTICE 1 06 June 1989 for ASTM O 702-81 June 26,1981 ASTM D 702-81 was adopted on 06 June 1989 and is approved For use by the Department of efense(OoD).ASTM has furnished clearances required by existing regulations.Copies of this
2、 document are stocked by DoD Single Stock Point,Naval Publications and Forms Center,5801 Tabor Avenue,Philadelphia,PA 19120,for issue to DoD activities only.All other requestors must obtain documents from:AST M 1916 Race Street Philadelphia,PA 19103 Title of Document:Standard Specification for Cast
3、Methacrylate Plastic Sheets,Rods,Tubes,and Shapes Date of Specific Issue Adopted:June 26,1981 Releasing Non-Government Standards Body:ASTM-*Custodians:Army-MR Navy-YD Air Force-99 Military Coorc,nating Activity:Navy-YD(Project 9330-1084)Review Activities:Navy-SH Air Force-84 DLA-GS.I FSC 9330:&-p”DI
4、STRIBUTION STATEMENT A.Approved for public release;distribution is unimited.THIS DOCUMENT CONTAINS PAGES.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.ASTM D702 81=0759510 0039294 7=Des
5、ignation:D 702-81 4 C T b AMERICAN SOCIETY FOR TESTING AND MATtHIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Specification for CAST METHACRYLATE PLASTIC SH
6、EETS,RODS,TUBES,AND SHAPES This standard i s issued under the fixed designation D 702;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscr
7、ipt epsilon(E)indicates an editorial change since the last revisionor reapproval.1.scope 1.1 This specification covers methacrylate plastic sheets,rods,tubes,and other shapes produced by casting or machining cast blanks.This specifcation does not apply to heat-formed and molded or extruded parts and
8、 shapes,or sections that are made by assembling two or more pieces.NOTE 1-The properties included in this specifi-cation are those required to identify the types and grades of materials covered.There may be other requirements necessary to identify particular char-acteristics.2.Applicable Documents 2
9、.1 ASTM Standards:D256 Tests for Impact Resistanceof Plastics D 542 Tests for Index of Refraction of Trans-D570 Test for Water Absorption of Plastics3 D618 Conditioning Plastics and Electrical D637 Test for Surface Irregularities of Flat D638 Test for Tensile Properties of Plastics3 D648 Test for De
10、flection Temperature of Plastics Under Flexural Load3 D 792 Tests for Specific Gravity and Density of Plastics by Displacement3 D 1003 Test for Haze and Luminous Trans-mittance of Transparent Plastics3 D 1898 RecommendedPractice for Sampling of Plastics3 D3892 Practice for Packaging/Packing of Plast
11、ics3 E 29 Recommended Practice for Indicating Which Places of Figures Are to Be Con-sidered Significant in Specified Limiting and Electrical Insulating Materials parent Organic plastics3 Insulating Materials for Testing4 Transparent Plastic Sheets3 Values E 308 Recommended Practice for Spectro-photo
12、metry and Description of Color i n CIE 1931 System 2.2 Military Standard:MIL-STD-105 Sampling Procedures and Ta-bles for Inspection by Attributes7 3.Classification 3.1 This specification covers two types of cast methacrylate plastics:3.1.1 Type 11-Heat-resistant material hav-ing characteristics of d
13、eflection temperature versus thickness conforming to the GUN=in Fig.1 and having ultraviolet light absorbing properties shown in Tables 5 and 6.3.1.2 Type III-Heat-resistant material hav-ing characteristics of deflection temperature versus thickness conforming to the curves in Fig.1.3.2 This specifi
14、cation covers the following three grades of castings:3.2.1 Grade I-Rods,tubes,and shrunk sheet having a smooth surface finish obtained either in the casting process or by highly pol-ishing the surface.Rods,tubes,and blocks are unshrunk unless otherwise specified in the or-der.T h i s specification i
15、s under the jurisdiction of ASTM Committee D-20 on Plastics and is the direct responsibility of SubcommitteeD20.19 on Sheeting.Current edition approved June 26,1981.Published Oc-tober 1981.Originally published as D 702-43 T.h s t pre-vious edition D 702-80.Annual Book of ASTM Standards,Parts 35,38,a
16、nd 39.Annuril Book of ASTM Standards,Part 35.Annual Book of ASTM Standards,Parts 22,35,and 39.Annual Book of ASTM Standards,Parts 10,1 I,12,35,Available from Naval Publications and Forms Center,39,and 41.5801 Tabor Ave.,Philadelphia,Pa.19120.Annual Book ofASTM Standards,Parts 21,and 46.I I _-_y_-ASTM D702 81 0757530 0037275 7 3.2.2 Grade 2-Rods,tubes,and shrunk sheets having a rough,unfinshed surface which may be frosted,abraded,sanded,machined,or as cast.3.2.3 Grade 3-Unshrunk sheet having a sm
