ASTM_C_578_-_17.pdf

Designation:C57817Standard Specification forRigid,Cellular Polystyrene Thermal Insulation1This standard is issued under the fixed designation C578;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification2covers the types,physical properties,and dimensions of cellular polystyrene boards with or withoutfacings or coatings made by molding(EPS)or extrusion(XPS)of expandable polystyrene.Products manufactured to thisspecification are intended for use as thermal insulation fortemperatures from-65 to+165F(-53.9 to+73.9C).Thisspecification does not apply to laminated products manufac-tured with any type of rigid board facer including fiberboard,perlite board,gypsum board,or oriented strand board.1.1.1 For Type XIII only,this specification covers thephysical properties,and dimensions of cellular polystyreneintended for use as thermal insulation for temperatures from297 to+165F(183 to+73.9C).1.2 Consult the manufacturer for specific recommendationsand properties in cryogenic conditions.1.2.1 This specification does not cover cryogenic propertiesexcept for the k-factors for Type XIII in Appendix X1.ForType XIII in specific cryogenic applications,the manufacturerand purchaser shall agree upon the actual temperature limitsand physical property requirements in addition to the k-factorsin Appendix X1.1.3 The use of thermal insulation materials covered by thisspecification may be regulated by building codes that addressfire performance.For some end uses,specifiers should alsoaddress the effect of moisture and wind pressure resistance.Guidelines regarding these end use considerations are includedin Appendix X1.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5This 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 and health practices and determine the applica-bility of regulatory limitations prior to use.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:3C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Proper-ties of Block-Type Thermal InsulationC272 Test Method for Water Absorption of Core Materialsfor Structural Sandwich ConstructionsC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Propertiesof Pipe InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC550 Test Method for Measuring Trueness and Squarenessof Rigid Block and Board Thermal InsulationC870 Practice for Conditioning of Thermal Insulating Ma-terials1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.22 onOrganic and Nonhomogeneous Inorganic Thermal Insulations.Current edition approved June 1,2017.Published June 2017.Originallyapproved in 1965.Last previous edition approved in 2016 as C578 16.DOI:10.1520/C0578-17.2This specification is similar to ISO 4898-1984,“Cellular PlasticsSpecificationfor Rigid Cellular Materials Used in the Thermal Insulation of Buildings,”in titleonly.The scope and technical content are significantly different.ISO standards are available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.3For 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.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