ASTM D3794-2018 Standard Guide for Testing Coil Coatings.pdf

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1、Designation: D3794 17D3794 18Standard Guide forTesting Coil Coatings1This standard is issued under the fixed designation D3794; 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 indi

2、cates 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 This guide covers procedures for testing coil coatings. The test methods in

3、cluded are listed in Table 1. Where more thanone test method is listed for the same characteristic, no attempt is made to indicate superiority of one method over another.Selection of test methods to be followed must be governed by the requirements in each individual case, together with agreementbetw

4、een the producer and user.1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this

5、standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Hazards.1.4 This international standard was developed in accordance with intern

6、ationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2B117 Pra

7、ctice for Operating Salt Spray (Fog) ApparatusB368 Test Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test)C1371 Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable EmissometersC1549 Test Method for Determination of Solar Reflectanc

8、e Near Ambient Temperature Using a Portable Solar ReflectometerD522 Test Methods for Mandrel Bend Test of Attached Organic CoatingsD523 Test Method for Specular GlossD610 Practice for Evaluating Degree of Rusting on Painted Steel SurfacesD660 Test Method for Evaluating Degree of Checking of Exterior

9、 PaintsD661 Test Method for Evaluating Degree of Cracking of Exterior PaintsD714 Test Method for Evaluating Degree of Blistering of PaintsD822 Practice for Filtered Open-Flame Carbon-Arc Exposures of Paint and Related CoatingsD823 Practices for Producing Films of Uniform Thickness of Paint, Coatings

10、 and Related Products on Test PanelsD870 Practice for Testing Water Resistance of Coatings Using Water ImmersionD968 Test Methods for Abrasion Resistance of Organic Coatings by Falling AbrasiveD1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using MicrometersD1014 Practice

11、 for Conducting Exterior Exposure Tests of Paints and Coatings on Metal SubstratesD1193 Specification for Reagent WaterD1200 Test Method for Viscosity by Ford Viscosity CupD1210 Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type GageD1212 Test Methods for Measurement of

12、 Wet Film Thickness of Organic CoatingsD1308 Test Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes1 This guide is under the jurisdiction ofASTM Committee D01 on Paint and Related Coatings, Materials, andApplications and is the direct responsibility of SubcommitteeD01.

13、53 on Coil Coated Metal.Current edition approved Feb. 1, 2017June 1, 2018. Published February 2017June 2018. Originally approved in 1979. Last previous edition approved in 20162017 asD3794 16.D3794 17. DOI: 10.1520/D3794-17.10.1520/D3794-18.2 For referencedASTM standards, visit theASTM website, www.

14、astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what

15、 changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the

16、official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D1474 Test Methods for Indentation Hardness of Organic CoatingsD1475 Test Method for Density of Liquid Coatings, Inks, and Related ProductsD1654 Test Method for Evaluat

17、ion of Painted or Coated Specimens Subjected to Corrosive EnvironmentsD1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque MaterialsD1735 Practice for Testing Water Resistance of Coatings Using Water Fog ApparatusD1823 Test Method for Apparent Viscosity

18、 of Plastisols and Organosols at High Shear Rates by Extrusion ViscometerD1824 Test Method for Apparent Viscosity of Plastisols and Organosols at Low Shear RatesD2092 Guide for Preparation of Zinc-Coated (Galvanized) Steel Surfaces for Painting (Withdrawn 2008)3D2196 Test Methods for Rheological Pro

19、perties of Non-Newtonian Materials by Rotational ViscometerD2197 Test Method for Adhesion of Organic Coatings by Scrape AdhesionD2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color CoordinatesD2247 Practice for Testing Water Resistance of Coatin

20、gs in 100 % Relative HumidityD2248 Practice for Detergent Resistance of Organic FinishesD2369 Test Method for Volatile Content of CoatingsD2454 Practice for Determining the Effect of Overbaking on Organic CoatingsD2697 Test Method for Volume Nonvolatile Matter in Clear or Pigmented CoatingsD2794 Tes

21、t Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)D2803 Guide for Testing Filiform Corrosion Resistance of Organic Coatings on MetalD3003 Test Method for Pressure Mottling and Blocking Resistance of Organic Coatings on Metal SubstratesD3134 Practice for Establis

22、hing Color and Gloss TolerancesD3170 Test Method for Chipping Resistance of CoatingsD3278 Test Methods for Flash Point of Liquids by Small Scale Closed-Cup ApparatusD3359 Test Methods for Rating Adhesion by Tape TestD3361 Practice for Unfiltered Open-Flame Carbon-Arc Exposures of Paint and Related C

23、oatingsD3363 Test Method for Film Hardness by Pencil TestD3960 Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related CoatingsD4060 Test Method for Abrasion Resistance of Organic Coatings by the Taber AbraserD4138 Practices for Measurement of Dry Film Thickness of Pro

24、tective Coating Systems by Destructive, Cross-SectioningMeansD4141 Practice for Conducting Black Box and Solar Concentrating Exposures of CoatingsD4145 Test Method for Coating Flexibility of Prepainted SheetD4146 Test Method for Formability of Zinc-Rich Primer/Chromate Complex Coatings on SteelD4147

25、 Practice for Applying Coil Coatings Using Wire-Wound Drawdown BarsD4212 Test Method for Viscosity by Dip-Type Viscosity CupsD4214 Test Methods for Evaluating the Degree of Chalking of Exterior Paint FilmsD4287 Test Method for High-Shear Viscosity Using a Cone/Plate ViscometerD4518 Test Methods for

26、Measuring Static Friction of Coating Surfaces (Withdrawn 2000)3D4585 Practice for Testing Water Resistance of Coatings Using Controlled CondensationD4587 Practice for Fluorescent UV-Condensation Exposures of Paint and Related CoatingsD5031 Practice for Enclosed Carbon-Arc Exposure Tests of Paint and

27、 Related CoatingsD5178 Test Method for Mar Resistance of Organic CoatingsD5402 Practice for Assessing the Solvent Resistance of Organic Coatings Using Solvent RubsD5531 Guide for Preparation, Maintenance, and Distribution of Physical Product Standards for Color and GeometricAppearance of CoatingsD57

28、23 Practice for Determination of Chromium Treatment Weight on Metal Substrates by X-Ray FluorescenceD5796 Test Method for Measurement of Dry Film Thickness of Thin-Film Coil-Coated Systems by Destructive Means Usinga Boring DeviceD5894 Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alte

29、rnating Exposures in a Fog/Dry Cabinet and aUV/Condensation Cabinet)D6093 Test Method for Percent Volume Nonvolatile Matter in Clear or Pigmented Coatings Using a Helium Gas PycnometerD6491 Practice for Evaluation of Aging Resistance of Prestressed Prepainted Metal In a Dry Heat TestD6492 Practice f

30、or Detection of Hexavalent Chromium On Zinc and Zinc/Aluminum Alloy Coated SteelD6578 Practice for Determination of Graffiti ResistanceD6665 Practice for Evaluation of Aging Resistance of Pre-stressed Prepainted Metal in a Boiling Water TestD6695 Practice for Xenon-Arc Exposures of Paint and Related

31、 Coatings3 The last approved version of this historical standard is referenced on www.astm.org.D3794 182D6906 Test Method for Determination of Titanium Treatment Weight on Metal Substrates by Wavelength Dispersive X-RayFluorescenceD6944 Practice for Determining the Resistance of Cured Coatings to Th

32、ermal CyclingD7091 Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metalsand Nonmagnetic, Nonconductive Coatings Applied to Non-Ferrous MetalsD7376 Practice for Outdoor Evaluation of Wet Stack Storage Conditions on Coil-Coated MetalsD7639 Test

33、 Method for Determination of ZirconiumTreatmentWeight orThickness on Metal Substrates by X-Ray FluorescenceD7835 Test Method for Determining the Solvent Resistance of an Organic Coating using a Mechanical Rubbing MachineD7869 Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposur

34、e for Transportation CoatingsD7897 Practice for Laboratory Soiling and Weathering of Roofing Materials to Simulate Effects of Natural Exposure on SolarReflectance and Thermal EmittanceE70 Test Method for pH of Aqueous Solutions With the Glass ElectrodeE84 Test Method for Surface Burning Characterist

35、ics of Building MaterialsE284 Terminology of AppearanceE308 Practice for Computing the Colors of Objects by Using the CIE SystemE408 Test Methods for Total Normal Emittance of Surfaces Using Inspection-Meter TechniquesE643 Test Method for Ball Punch Deformation of Metallic Sheet MaterialE903 Test Me

36、thod for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating SpheresE1164 Practice for Obtaining Spectrometric Data for Object-Color EvaluationE1356 Test Method for Assignment of the Glass Transition Temperatures by Differential Scanning CalorimetryE1541 Practice for Spe

37、cifying and Matching Color Using the Colorcurve System (Withdrawn 2007)3E1545 Test Method for Assignment of the Glass Transition Temperature by Thermomechanical AnalysisE1640 Test Method for Assignment of the Glass Transition Temperature By Dynamic Mechanical AnalysisE1808 Guide for Designing and Co

38、nducting Visual ExperimentsE1918 Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the FieldE1980 Practice for Calculating Solar Reflectance Index of Horizontal and Low-Sloped Opaque SurfacesG7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic

39、MaterialsG60 Practice for Conducting Cyclic Humidity ExposuresG85 Practice for Modified Salt Spray (Fog) TestingG87 Practice for Conducting Moist SO2 TestsG90 Practice for Performing Accelerated Outdoor Weathering of Materials Using Concentrated Natural SunlightG113 Terminology Relating to Natural a

40、nd Artificial Weathering Tests of Nonmetallic MaterialsG151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light SourcesG152 Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic MaterialsG153 Practice for Operating Encl

41、osed Carbon Arc Light Apparatus for Exposure of Nonmetallic MaterialsG154 Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials3. Terminology3.1 Definitions:

42、3.1.1 coil coating, napplication of coatings or films to continuous metal coil stock.3.1.2 direct roller coat, ncoating with the applicator or coating roll revolving in the same direction as the strip.3.1.3 metal pretreatment, nchemical treatment normally applied to the metal substrate prior to prim

43、e or finish coating.3.1.3.1 DiscussionThe treatment is designed to react with and modify the metal substrate to produce a surface suitable for coating or adhesivebonding.3.1.4 reverse roller coat, ncoating with the applicator or coating roll revolving in a direction opposite to that of the strip.3.2

44、 The definitions given in Terminology G113 are applicable to this guide.4. Significance and Use4.1 This guide represents a collection of pertinent ASTM test methods used within the coil coatings industry. In the past coilcoaters world wide depended on industry standards written by the National Coil

45、CoatersCoating Association. That association,working cooperatively with ASTM, will no longer issue new, nor update old, standards.D3794 183TABLE 1 List of Test Methods and Recommended PracticesSection ASTM StandardLiquid Coatings Properties: 7Viscosity: 7.1Ford cup viscosity 7.1.2 D1200Zahn cup visc

46、osity 7.1.2 D4212High-Shear extrusion viscometer 7.1.3 D1823Plastisol and organosol low-shear viscosity 7.1.4 D1824Brookfield-type viscometer 7.1.5 D2196Rotational viscometer 7.1.5 D2196Cone and Plate viscometer 7.1.6 D4287Weight Solids 7.2 D2369Volatile Content 7.2 D2369Volume Solids 7.3 D2697, D60

47、93Fineness of dispersion 7.4 D1210Density (weight per gallon) 7.5 D1475VOC Determination 7.6 D3960pH 7.7 E70Flash Point 7.8 D3278Metal Pretreatment: 8Preparation of galvanized steel for painting 8.2 D2092Detecting Cr+6 8.3.1 D6492X-ray fluorescence, chrome determination 8.3.2 D5723X-ray fluorescence

48、, titanium determination 8.3.3 D6906X-ray fluorescence, zirconium determination 8.3.4 D7639Panel Preparation: 9Wire-wound drawdown bars 9.4.1.1 D4147Blade film applicator 9.4.1.2 D823Wet film thickness 9.5 D1212Material Properties of a Cured Coil Coating System: 10Dry film thickness (DFT) 10.1DFT, d

49、estructive methods 10.1.1DFT, micrometer 10.1.1.1 D1005DFT, microscope 10.1.1.2 D4138DFT, boring method 10.1.1.3 D5796DFT, non-destructive methods 10.1.2DFT, eddy current, non-ferrous base 10.1.2.1 D7091DFT, magnetic flux, ferrous base 10.1.2.2 D7091Color: 10.2Glossary of color 10.2.1 E284Preparation and control of color standards 10.2.1 D5531Color and gloss tolerances 10.2.1 D3134Conducting visual experiments 10.2.1 E1808Color differences by visual evaluation 10.2.2Visual evaluation of color and color difference 10.2.2.1 D1729Color differences by instrumental evaluation