ASTM_D_4225_-_03.pdf

Designation:D 4225 03Standard Specification forStyrene-Butadiene Sheeting1This standard is issued under the fixed designation D 4225;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification covers styrene-butadiene sheeting inthicknesses of 0.25 mm 0.01 in.and greater.Sheetingconforming to this specification is intended for use in instru-ment housings and applications requiring resistance to impact.Methods of fabrication may require that the sheet be drawn orbent.1.2 This specification covers natural and colored sheeting.1.3 This specification covers quality requirements that in-clude degree of orientation,amount of warpage or twist,dimensions,tolerances,and workmanship.1.4 The values stated in SI units are to be regarded as thestandard.The units given in brackets are for information only.1.5 This specification allows for the use of recycled plasticsas defined in Guide D 5033.1.6 The following precautionary statement pertains to thetest method portion only,Section 12,of this specification:Thisstandard does not purport to address the safety concerns,ifany,associated 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.NOTE1There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:D 256 Test Methods for Determining the Izod PendulumImpact Resistance of Plastics2D 618 Practice for Conditioning Plastics for Testing2D 638 Test Method for Tensile Properties of Plastics2D 883 Terminology Relating to Plastics2D 1238 Test Method for Flow Rates of Thermoplastics byExtrusion Plastometer2D 1525 Test Method for Vicat Softening Temperature ofPlastics2D 1898 Practice for Sampling of Plastics3D 2732 Test Method for Unrestrained Linear ThermalShrinkage of Plastic Film and Sheeting4D 3892 Practice for Packaging/Packing of Plastics4D 4549 Specification for Polystyrene and Rubber-ModifiedPolystyrene Molding and Extrusion Materials(PS)5D 5033 Guide for the Development of ASTM StandardsRelating to Recycling and Use of Recycled Plastics52.2Federal Standard:6Fed.Std.No.406,Plastics:MethodsofTesting(Method 6051,Warpage)2.3Military Standard:7MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by Attributes3.Terminology3.1 Definitions:Unless otherwise indicated,the terminologyused in this specification is in accordance with definitionsgiven in Terminology D 883.4.Classification4.1 The styrene-butadiene sheeting in accordance with thisspecification is classified by Type(see Table 1)as follows:4.1.1 Type ILow shrinkage.4.1.2 Type IIIntermediate shrinkage.4.1.3 Type IIIHigh shrinkage.4.2 The styrene-butadiene sheeting is further divided intoclasses as follows:4.2.1 Class 1-Natural4.2.2 Class 2-As specified by user4.3 Sizes4.3.1 Size A:0.5 by 1 m.4.3.2 Size B:as specified by user.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.19 on Film andSheeting.Current edition approved July 10,2003.Published September 2003.Originallyapproved in 1983.Last previous edition approved in 1997 as D 4225 97.2Annual Book of ASTM Standards,Vol 08.01.3Discontinued;see 1997 Annual Book of ASTM Standards,Vol 08.01.4Annual Book of ASTM Standards,Vol 08.02.5Annual Book of ASTM Standards,Vol 08.03.6Available from Superintendent of Documents,U.S.Government PrintingOffice,North Capital and H Sts.,NW,Washington,DC 20401.7Available from Standardization Documents,Order Desk,Bldg.4 Section D,700 Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.4.4 The sheeting covered by this specification shall beidentified by a document-based part numbering system asfollows:where:D 4225=ASTM standard designation number,I=Type I(low shrinkage),A=Size(0.5 by 1 m),and1=Class(natural color).5.Ordering Information5.1 Purchasers shall select the preferred options permittedherein and include the following information in the purchasecontract.5.1.1 Title,number,and date of this specification.5.1.2 Classification in accordance with SpecificationD 4549 of the material to be used to manufacture the sheet(see6.1).5.1.3 Length and width of sheets(see 7.5).5.1.4 Thickness of sheets(see 7.5).5.1.5 Color(see 7.4).5.1.6 Requirements for packaging,packing,and marking(see 15.1).6.Materials and Manufacture6.1 MaterialsThe sheeting shall be manufactured fromstyrene-butadiene thermoplastic material of the classificationspecified in 5.