ASTM_F_3019_-_F_3019M_-_14.pdf

Designation:F3019/F3019M14Standard Specification forChromium Free Zinc-Flake Composite,with or withoutIntegral Lubricant,Corrosion Protective Coatings forFasteners1This standard is issued under the fixed designation F3019/F3019M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the basic requirements fornon-electrolytically applied zinc-flake composite corrosionprotective coating systems for fasteners(See Note 1).NOTE1The coating systems do not contain hexavalent chromium,lead,cadmium,or mercury.1.2 This specification is intended for corrosion protection ofinch and metric series threaded fasteners with minimumnominal diameters of 0.250 in.for inch series and 6.00 mmfor metric as well as for non-threaded fasteners such as washersand pins.1.3 This coating system may be specified to consist of azinc-flake basecoat,or a zinc-flake basecoat and topcoat(SeeNote 2).NOTE2For threaded fasteners,the coating system will typicallyconsist of a zinc-flake basecoat and topcoat.1.3.1 The basecoat is a zinc-rich material containing alumi-num flakes dispersed in a compatible liquid medium.Thezinc-flake basecoat may be specified to contain integral lubri-cant.1.3.2 Topcoats may be organic or inorganic in compositiondepending upon the specified requirements.1.3.2.1 Organic topcoats consist of polymer resins,aluminum,dispersed pigments,and are colored in their appliedstate.1.3.2.2 Inorganic topcoats consist of water-dispersed silicatecompounds and are transparent in their applied state.1.3.2.3 Topcoats contain integral lubricants and are appliedin conjunction with zinc-flake basecoats to form a coatingsystem with enhanced performance attributes such as increasedcorrosion resistance,total coefficient of friction properties,chemical resistance,and color.1.4 These zinc-flake basecoats and topcoats are applied byconventional dip-spin,dip-drain,or spray methods to fastenerswhich can be handled through a cleaning,coating,and curingoperation.The maximum curing temperature is 482F 250C.1.5 The friction properties of the coating system may bedetermined by a standard test to verify process control or by apart specific test which requires the purchaser to establish andcommunicate technical criteria.1.6 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.1.7 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:2B117 Practice for Operating Salt Spray(Fog)ApparatusB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination ofCross SectionB499 Test Method for Measurement of Coating Thicknessesby the Magnetic Method:Nonmagnetic Coatings onMagnetic Basis MetalsB568 Test Method for Measurement of Coating Thicknessby X-Ray SpectrometryD610 Practice for Evaluating Degree of Rusting on PaintedSteel SurfacesD3359 Test Methods for Measuring Adhesion by Tape TestE376 Practice for Measuring Coating Thickness byMagnetic-Field or Eddy-Current(Electromagnetic)Test-ing Methods1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.03 on Coatings onFasteners.Current edition approved Oct.1,2014.Published November 2014.DOI:10.1520/F3019_F3019M14.2For 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 F606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers,Direct Tension Indicators,and RivetsF606M Test Methods for Determining the Mechanical Prop-erties of Externally and Internally Threaded Fasteners,Washers,and Rivets(Metric)F788 Specification for Surface Discontinuities of Bolts,Screws,and Studs,Inch and Metric SeriesF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1624 Test Method for Measurement of Hydrogen Em-brittlement Threshold in Steel by the Incremental StepLoading TechniqueF1789 Terminology for F16 Mechanical FastenersF1940 Test Method for Process Control Veri