ASTM_C_647_-_19.pdf

Designation:C64719Standard Guide toProperties and Tests of Mastics and Coating Finishes forThermal Insulation1This standard is issued under the fixed designation C647;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 guide identifies properties of mastics and coatingfinishes characterizing their performance as finishes for ther-mal insulation.1.2 These properties relate to application and service.Eachproperty is defined,and its significance and suggested testmethods are described.1.3 The properties appear in the following order in thisguide.ParagraphApplication Properties6Consistency6.1Coverage6.2Build6.3Wet Flammability6.4Toxicity6.5Temperature and Humidity Range6.6Surface Wetting and Adhesion6.7Gap Filling and Bridging6.8Sizing and Sealing6.9Corrosion or Solvent Attack6.10Drying Time and Curing Time6.11Shrinkage6.12Storage Stability6.13Freeze-Thaw Stability6.14Service Properties7Specimen Preparation7.1Outdoor Durability7.2Environmental Resistance7.3Temperature Limits7.3.1Chemicals and Water Resistance7.3.2Mold and Mildew Resistance7.3.3Surface Flammability7.4Water-Vapor Transmission Rate7.5Adhesion7.6Damage Resistance7.7Impact Resistance7.7.1Abrasion Resistance7.7.2Stress Resistance7.8Flexure7.8.1Elongation7.8.2Color7.9Odor7.10Other Properties81.4 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 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:2C168 Terminology Relating to Thermal InsulationC419 Practice for Making and Curing Test Specimens ofMastic Thermal Insulation CoatingsC461 Test Methods for Mastics and Coatings Used WithThermal InsulationC488 Test Method for Conducting Exterior Exposure Testsof Finishes for Thermal InsulationC681 Test Method for Volatility of Oil-and Resin-Based,Knife-Grade,Channel Glazing CompoundsC755 Practice for Selection of Water Vapor Retarders forThermal InsulationC792 Test Method for Effects of HeatAging on Weight Loss,Cracking,and Chalking of Elastomeric SealantsD36/D36M Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D56 Test Method for Flash Point by Tag Closed Cup TesterD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD562 Test Method for Consistency of Paints Measuring1This guide is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.33 on InsulationFinishes and Moisture.Current edition approved March 1,2019.Published April 2019.Originallyapproved in 1969.Last previous edition approved in 2013 as C647 08(2013).DOI:10.1520/C0647-19.2For 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 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.1 Krebs Unit(KU)Viscosity Using a Stormer-Type Viscom-eterD638 Test Method for Tensile Properties of PlasticsD747 Test Method for Apparent Bending Modulus of Plas-tics by Means of a Cantilever Beam(Withdrawn 2019)3D790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD822/D822M Practice for Filtered Open-Flame Carbon-ArcExposures of Paint and Related CoatingsD903 Test Method for Peel or Stripping Strength of Adhe-sive BondsD968 Test Methods for Abrasion Resistance of OrganicCoatings by Falling AbrasiveD1310 Test Method for Flash Point and Fire Point of Liquidsby Tag Open-Cup ApparatusD1640 Test Methods for Drying,Curing,or Film Formationof Organic CoatingsD1654 Test Method for Evaluation of Painted or CoatedSpecimens Subjected to Corrosive EnvironmentsD1729 Practice for Visual Appraisal of Colors and ColorDifferences of Diffusely-Illuminated Opaque MaterialsD1849 Test Method