1、Designation:D124816Standard 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 U.S.Department of Defense.1.Scope*1.1 This specification provides for the identificat
3、ion 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
4、to the 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
5、.The 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 a
6、ddress 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.NOT
7、E2This 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.NOTE3Se
8、e Guide 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 Condu
9、ctance 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 Displ
10、acementD1238 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 DisplacementProcedures(Withdrawn 2012)3D160
11、3 Test Method for Carbon 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 Pract
12、ice for Use of a Melt 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 responsibi
13、lity of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Nov.15,2016.Published December 2016.Originallyapproved in 1952.Last previous edition approved in 2012 as D1248-12.DOI:10.1520/D1248-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Cust
14、omer Service at serviceastm.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 standardCop
15、yright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International
16、 Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 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 Carbon BlackD3350 Specification for Polyethylene Plastics Pipe and Fit-tings MaterialsD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulati
