ASTM_D_480_-_88_2014.pdf

Designation:D48088(Reapproved 2014)Standard Test Methods forSampling and Testing of Flaked Aluminum Powders andPastes1This standard is issued under the fixed designation D480;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 These test methods cover procedures for sampling,qualitative analysis,and physical testing of flaked aluminumpowders and pastes(leafing and nonleafing)for coatings.1.2 These test methods apply equally to leafing and non-leafing flaked aluminum powders and pastes except wherenoted to the contrary.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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.For a specifichazard statement,see 7.3.1.2.Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse Particles in PigmentsD235 Specification for Mineral Spirits(Petroleum Spirits)(Hydrocarbon Dry Cleaning Solvent)D329 Specification for AcetoneD962 Specification for Aluminum Powder and Paste Pig-ments for PaintsD3980 Practice for Interlaboratory Testing of Paint andRelated Materials(Withdrawn 1998)3E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE34 Test Methods for Chemical Analysis of Aluminum andAluminum-Base AlloysE607 Test Method for Atomic Emission SpectrometricAnalysis Aluminum Alloys by the Point to Plane Tech-nique Nitrogen Atmosphere(Withdrawn 2011)3E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Significance and Use3.1 Flaked aluminum pigments are produced in a variety offorms.These test methods allow the user to determine theapplicability of a given product to this use.4.Sampling4.1 Sampling is subject to mutual agreement between theseller and the purchaser.Place each sample in a clean,drymetal or glass container which shall be nearly filled,then closewith a tight cover,seal,mark,and send to the laboratory fortesting.4.2 When requested,duplicate samples may be taken fromthe same container and delivered to the seller,and the inspectormay take a third set of samples to hold for test in case ofdisagreement.5.Qualitative Analysis5.1 Significance and UseThis test method determines ifthere are chemical impurities,other than fatty and oily matter,as specified in Specification D962,to ensure the absence offillers or extender pigments.5.2 Procedure:5.2.1 Total ImpuritiesDetermine the total impurities byweight in accordance with Test Methods E34 and E607 or byatomic absorption.5.2.2 Total AluminumDetermine the total aluminum byweight difference with elemental impurities in accordance with5.2.1.6.Leafing Properties6.1 The leafing test conditions specified are selectedarbitrarily,and even though the numerical leafing value ob-tained by this test method appears to be low,the pigment may1These test methods are under the jurisdiction of ASTM Committee D01 onPaint and Related Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.31 on Pigment Specifications.Current edition approved Dec.1,2014.Published December 2014.Originallyapproved in 1938.Last previous edition approved in 2008 as D480 88(2008).DOI:10.1520/D0480-88R14.2For 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 States1 give substantially perfect leafing under the conditions ofpractical application in a paint.6.2 Significance and UseThis leafing test method has beenestablished to determine the percent of leafed aluminum flakesat the surface of a simulated paint formula to ensure a brightmetallic luster.Minimum leafing characteristics must conformto Specification D962.6.3 Apparatus:6.3.1 Leafing Spatula,nonmagnetic,stainless steel spatulahaving the following dimensions:Length of blade min,in.(mm)5.5(139.7)Width of blade,in.(mm)0.540 0.002(13.72 0.05)Thickness of blade,in.(mm):10 mm from tip0.013 0.003(0.33 0.08)100 mm from tip0.038 0.004(0.97 0.10)Shape of tiprounded or straightThe surface of the spatula shall be polished with 3/0 emeryor silicon carbide metallographic paper wet with mineralspirits;polishing shall be repeated for 1-min inte