1、41De.lgnatlon:D752-73(Reapproved 1978)An American Ntltional StandardStandard SpecificationforHEAVY-DUTY BLACK POLYCHLOROPRENEJACKETFORWIRE ANDCABLE1This standardisissued under thefIXeddesignation0752;the number immediately following tbe designation indicates theyearoforiginal adoption or,in thecaseo
2、frevision,the yearoflast revision.Anumber in parentheses indicates the year oflsstreapprovaI.1.ScopeJ.IThis specification covers a durable vul-canizedblackpolychloroprenecompoundsuitable for use as the outside coveringorjacket on insulated electrical wires and cablesfor heavy-duty service.Theaccepta
3、bilityofthe jacketcompound.underthis specification.shall be determined solelybythe test require-ments specified herein.J.2 This jackctcompoundisnot recom-mended for installationoruseinservice at atemperature lower than-25cC.2.Applicable Document2.1ASTMStandard:D470TestingThermosettingInsulated and24
4、1jacketedWire and Cable23.Physical Requirements3.1Thevulcanized jacket shall conform totherequirementsfor physicalpropertiesspec-ifiedinTableI.4.Test Methods4.1 Test thejacketinaccordancewithMethodsD470.IThis specificationisunder the jurisdictionofASTMCommittee0-9on Electrical Insulating Materials a
5、ndisthe direct responsibility of SubcommitteeD09.18on Elas-tomeric Insulation on Cables.Current edition approvedMay22.1973.PublishedJune 1973.Originally published asD752-43 T.Lastprevious editionD752-62(1968).Annual BookofASTMStandards.Part40.NOTICE:This standard has either been superseded and repla
6、ced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.41D752TABLEIP1ay.lul Test Requlre.eat.r.HeaYDutyBlllCkPoIycldoropreae JllCkerPbysi1RequiremenlS.Tensile strength.min.psi(MPa)Tensile stressat200%elongation.min.psi(MPa)Elongation at rupture.min.%S
7、et in 2-in.(50-mm)gage length,max,%Aging RequiremenlS:After Air Oven Test at 1001C for168b:Tensile strength.min,%ofunagedvalueElongationatrupture.min,%ofunaged valueAfter oil immersion testat1211C for18h:Tensile strength.min,%ofunagedvalueElongation at rupture.min.%ofunagedvalue1800(12.4)500(3.4)300
8、20soso6060.Thevalues specified areappJibleonly tojackelS hav-ing a nominaJwallthicknessof30mils(0.76 mm)orgreater.ThAmuicanSocietyforTesting tmd Materillis takes no(!osition respecting the validityofany patent rights assertedinconnectionwithany itma mentionedinthis standard.Users0lthisstandard are e
9、xpressly advised that determinationofthvalidityofany such patent rights,and the riskofinfringementofsuch rights.isentirely their ownrsponsjbility.This standardissubjcttorvisionat anytimby thersponsibletechnical committee and must be reviewedeveryfiveyarsandifnotrevisd.ithrrapprovdorwithdrawn.Your co
10、mments are invited either forrvisionofthis standardorfor additional standards and shouldbaddressedtoASTMHadquarters.Your commentswillreceive careful considerationat a meetingoftheresponsibltechnical committee.whichyoumay attend.Ifyou feel that your comments have not receiveda fair hearing you should make yourviwsknowntotheASTMCommitteeonStandards.1916Race St.Philadelphia.Po.19103.whichwillschduleafurthrhearingrgardingyou,comments.Failing satisfoction there.you may appeal10theASTMBoardofDirectors.242
