ASTM_C_656_-_07_2013.pdf

Designation:C65607(Reapproved 2013)Standard Specification forStructural Insulating Board,Calcium Silicate1This standard is issued under the fixed designation C656;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 This specification covers structural insulating board forgeneral thermal insulating,fire-resistive,and marine bulkheadapplications.The rigid,preformed structural insulating board isfor use at temperatures up to 1700F(927C).For specificapplications,the actual temperature limit shall be agreed uponbetween the manufacturer and the purchaser.1.2 The structural insulating board maintains its structuralintegrity after immersion in water.1.3 Rapid cycling over a wide temperature range is notrecommended because of potential damage due to thermalshock.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.1.5 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 and health practices and determine the applica-bility of regulatory limitations prior to use.1.6 When the installation or use of thermal insulationmaterials,accessories and systems,may pose safety or healthproblems,the manufacturer shall provide the user appropriatecurrent information regarding any known problems associatedwith the recommended use of the companys products,andshall also recommend protective measures to be employed intheir safe utilization.The user shall establish appropriate safetyand health practices and determine the applicability of regula-tory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2C165 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 InsulationC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC356 Test Method for Linear Shrinkage of Preformed High-Temperature Thermal Insulation Subjected to SoakingHeatC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC447 Practice for Estimating the Maximum Use Tempera-ture of Thermal InsulationsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC1045 Practice for Calculating Thermal Transmission Prop-erties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsE136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750C3.Terminology3.1 DefinitionsThe definitions in Terminology C168 shallapply to the terms used in this specification.4.Classification4.1 The structural insulating boards shall be of the followingtypes:4.1.1 Type IMaximum use temperature 1400F(760C).4.1.2 Type IIMaximum use temperature 1700F(927C).4.2 The structural insulating boards shall be of the followinggrades:4.2.1 Grade 1Typical density 36 lb/ft3(577 kg/m3).4.2.2 Grade 2Typical density 46 lb/ft3(737 kg/m3).4.2.3 Grade 3Typical density 60 lb/ft3(961 kg/m3).1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved March 1,2013.Published March 2013.Originallyapproved in 1970.Last previous edition approved in 2007 as C656 07.DOI:10.1520/C0656-07R13.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2.4 Grade 4Typical density 14 lb/ft3(224 kg/m3).4.2.5 Grade 5Typical density 18 lb/ft3(288 kg/m3).4.2.6 Grade 6Typical density 28 lb/ft3(449 kg/m3).4.2.7 Grade 7Typical density 40 lb/ft3(641 kg/m3).4.2.8 Grade 8Typical density 60 lb/ft3(961 kg/m3).5.Ordering Information5.1 The type,grade,and dimensions shall be specified bythe purchaser.5.2 When a certification or test report,or both,are required,it shall be specified by the purchaser.6.Materials and Manufacture6.