ASTM_D_1039_-_16_2022.pdf

Designation:D103916(Reapproved 2022)Standard Test Methods forGlass-Bonded Mica Used as Electrical Insulation1This standard is issued under the fixed designation D1039;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the evaluation of the charac-teristics of glass-bonded,natural,or synthetic mica materialsintended for use as electrical insulation.1.2 Glass bonded mica materials are commercially availablein both injection molded and compression molded types.Thesetest methods are applicable to both types except for tensilestrength methods.(See Section 41.)1.3 The test methods appear in the following sections:Test MethodSectionASTM Test MethodArc Resistance57 59D495Compressive Strength33 35D695Conditioning5D618Dielectric Strength48 51D149Dissipation Factor43 47D150 and D2149Heat Distortion Temperature24 29D648Impact Resistance36 39D256Modulus of Rupture30 32D790 and C674Permittivity43 47D150 and D2149Porosity13 16D116Resistivity,Volume and Surface52 56D257Rockwell Hardness10 12D785Specific Gravity6 9D792Specimens4Tensile Strength40 42D638 and D651Terminology3D1711Thermal Conductivity17 19C177 and E1225Thermal Expansion20 23E228 and E289Thickness49 and 54D3741.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See also Sections 45,49,54,and 58.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC674 Test Methods for Flexural Properties of CeramicWhiteware MaterialsD116 Test Methods for Vitrified Ceramic Materials forElectrical ApplicationsD149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD256 Test Methods for Determining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD374 Test Methods for Thickness of Solid Electrical Insu-lation(Metric)D0374_D0374MD495 Test Method for High-Voltage,Low-Current,Dry ArcResistance of Solid Electrical InsulationD618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD648 Test Method for Deflection Temperature of PlasticsUnder Flexural Load in the Edgewise PositionD651 Test Method for Test for Tensile Strength of MoldedElectrical Insulating Materials(Withdrawn 1989)3D695 Test Method for Compressive Properties of RigidPlasticsD785 Test Method for Rockwell Hardness of Plastics andElectrical Insulating MaterialsD790 Test Methods for Flexural Properties of Unreinforced1These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.01 on Electrical Insulating Products.Current edition approved May 1,2022.Published May 2022.Originallyapproved in 1949.Last previous edition approved in 2016 as D1039 16.DOI:10.1520/D1039-16R22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer 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.Copyright 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 Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1and Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD1711 Terminology Relating to Electrical InsulationD2149 Test Method for Permittivity(Dielect