1、Designation:D124812Standard Specification forPolyethylene Plastics Extrusion Materials for Wire andCable1This standard is issued under the fixed designation D1248;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revis
2、ion.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 Department of Defense.1.Scope*1.1 This specification provides for the identification
3、ofpolyethylene plastics extrusion materials for wire and cable insuch a manner that the seller and the purchaser can agree on theacceptability of different commercial lots or shipments.Thetests involved in this specification are intended to provideinformation for identifying materials according to t
4、he types,classes,categories,and grades covered.It is not the function ofthis specification to provide specific engineering data fordesign purposes.1.2 This specification does not allow for the use of recycledplastics(see Note 3).1.3 The values stated in SI units are to be regarded as thestandard.The
5、 values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.4 The following safety hazards caveat pertains only to thetest method portion,Section 12,of this specification:Thisstandard does not purport to addre
6、ss all of the safety concerns,if any,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.NOTE2Th
7、is standard has undergone major revision from the reap-proval of 1989 and now covers only polyethylene for wire and cableapplications.For information regarding molding and extrusion materials,see Specification D4976.For information regarding plastic pipe materials,see Specification D3350.NOTE3See Gu
8、ide D7209and 3.1.2 of this standard for informationand definitions related to recycled plastics.2.Referenced Documents2.1 ASTM Standards:2D150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductan
9、ce ofInsulating MaterialsD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by Displacem
10、entD1238 Test Method for Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1531 Test Methods for Relative Permittivity(DielectricConstant)and Dissipation Factor by Fluid DisplacementProceduresD1603 Test Method for Car
11、bon Black Content in OlefinPlasticsD1693 Test Method for Environmental Stress-Cracking ofEthylene PlasticsD2565 Practice for Xenon-Arc Exposure of Plastics In-tended for Outdoor ApplicationsD2633 Test Methods for Thermoplastic Insulations andJackets for Wire and CableD2839 Practice for Use of a Melt
12、 Index Strand for Deter-mining Density of PolyethyleneD2951 Test Method for Resistance of Types III and IVPolyethylene Plastics to Thermal Stress-Cracking(With-drawn 2006)31This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee
13、D20.15 on ThermoplasticMaterials.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 1952.Last previous edition approved in 2005 as D1248-05.DOI:10.1520/D1248-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceas
14、tm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International
15、,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3349 Test Method for Absorption Coefficient of EthylenePolymer Material Pigmented with
16、Carbon BlackD3350 Specification for Polyethylene Plastics Pipe and Fit-tings MaterialsD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsD3892 Practice for Packaging/Packing of PlasticsD4329 Practice for Fluorescent UV Exposure of PlasticsD4703 Practice for Compression Molding ThermoplasticMaterials into Test Specimens,Plaques,or SheetsD4976 Specification for Polyethylene Plastics Molding andExtrusion MaterialsD6360 Practice for Enclosed Carbon-Arc Exposures o
