ASTM_D_866_-_99.pdf

Designation:D 866 99An American National StandardStandard Specification forCrosslinked Styrene-Butadiene(SBR)Synthetic RubberJacket for Wire and Cable1This standard is issued under the fixed designation D 866;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.1.Scope1.1 This specification covers a crosslinked styrene-butadiene(SBR)synthetic rubber compound suitable for use asthe outer covering or jacket on insulated electrical wires orcables for heavy-duty service.1.2 This jacket is not recommended for installation at atemperature lower than 35C.1.3 Whenever two sets of values are presented,in differentunits,the values in the first set are the standard,while those inparentheses are for information only.2.Referenced Documents2.1 ASTM Standards:D 470 Test Methods for Crosslinked Insulations and Jacketsfor Wire and Cable2D 1711 Terminology Relating to Electrical Insulation23.Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication,refer to Terminology D 1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 aging(act of),nexposure of materials to air at 70Cfor 168 h or oxygen at 70C for 96 h.4.Physical Properties4.1 The jacket shall conform to the requirements for physi-cal properties prescribed in Table 1.5.Sampling5.1 Sample the jacket in accordance with Test MethodsD 470.6.Test Methods6.1 Test the jacket in accordance with Test Methods D 470.7.Keywords7.1 crosslinked jacket;rubber jacket;styrene-butadienejacket;synthetic rubber jacketASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.Individual reprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585(phone),610-832-9555(fax),or serviceastm.org(e-mail);or through the ASTM website(www.astm.org).1This specification is under the jurisdiction of ASTM Committee D-9 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.18 on Solid Insulations,Nonmetallic Shieldings,and Coveringsfor Electrical and Telecommunications Wires and Cables.Current edition approved April 10,1999.Published June 1999.Originallypublished as D 866 46 T.Last previous edition D 866 95.2Annual Book of ASTM Standards,Vol 10.01.TABLE 1 Physical PropertiesAUnaged Requirements:Tensile strength,min,psi(MPa)1800(12.4)Elongation at rupture,min,%300Tension set,Bmax,%20Aged Requirements:After oxygen pressure test at 70 6 1C for 96 h:Tensile strength,min,psi(MPa)1400(9.7)Elongation at rupture,min,%200After Air Oven Test at 70 6 1C for 168 h:Tensile strength,min,psi(MPa)1400(9.7)Elongation at rupture,min,%200AThe values specified are applicable only to jacket having a nominal wallthickness of 0.030 in.(0.76 mm)or greater.BSet in 2 in.(50 mm).1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.