ASTM_D_1006_-_D_1006M_-_13.pdf

Designation:D1006/D1006M13Standard Practice forConducting Exterior Exposure Tests of Paints on Wood1This standard is issued under the fixed designation D1006/D1006M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This practice covers procedures to be followed for directexposure of house and trim paints on new,previously un-painted wood materials to the environment.When originatorsof a weathering test have the actual exposure conducted by aseparate agency,the specific conditions for the exposure of testand control specimens should be clearly defined and mutuallyagreed upon between all parties.1.2 This standard covers specimen preparation including theapplication of the test paint to the wood substrate.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 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.2.Referenced Documents2.1 ASTM Standards:2D358 Specification for Wood to Be Used as Panels inWeathering Tests of CoatingsE41 Terminology Relating To ConditioningG7 Practice for Atmospheric Environmental Exposure Test-ing of Nonmetallic MaterialsG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic MaterialsG147 Practice for Conditioning and Handling of Nonmetal-lic Materials for Natural and Artificial Weathering Tests3.Terminology3.1 DefinitionsThe definitions given in TerminologiesE41 and G113 are applicable to this practice.4.Significance and Use4.1 The procedure described in this practice is intended toaid in evaluating the performance of house and trim paints tonew,previously unpainted wood.4.2 The relative durability of paints in outdoor exposurescan be very different depending on the location of the exposurebecause of differences in solar radiation,time of wetness,temperature,pollutants,and other factors.Therefore,it cannotbe assumed that results from one exposure in a single locationwill be useful for determining relative durability in a differentlocation.Exposures in several locations with different climateswhich represent a broad range of anticipated service conditionsare recommended.4.2.1 Because of year-to-year climatological variations,re-sults from a single exposure test cannot be used to predict theabsolute rate at which a material degrades.Several years ofrepeat exposures are needed to get an“average”test result fora given location.4.2.2 Solar radiation varies considerably as function of timeof year.This can cause large differences in the apparent rate ofdegradation in many paints.Comparing results for materialsexposed for short periods(less than one year)is not recom-mended unless materials are exposed at the same time in thesame location.4.3 The Significance and Use section in Practice G7 ad-dresses many variables to be considered in exterior exposuretests.5.Location of Test Sites and Exposure Orientation5.1 Test SitesThe climatic conditions of the test sitesshould be representative of those of the area in which the paintsare to be used.The type and rate of failure of a paint film willvary when exposed to different combinations of climatic andatmospheric conditions.For reliable results,exposure sitesshould be selected that are representative geographically,1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.27 on Accelerated Testing.Current edition approved June 1,2013.Published August 2013.Originallyapproved in 1951.Last previous edition approved in 2006 as D1006 01(2006).DOI:10.1520/D1006_D1006M-13.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 climatically,and in atmospheric contaminations with those ofthe locality in which the paint will be used.To obtainconclusions that are valid for paints with national distributionrequires exposure at several sites,selected to cover a widera