1、Designation: D609 00 (Reapproved 2012)D609 17Standard Practice forPreparation of Cold-Rolled Steel Panels for Testing Paint,Varnish, Conversion Coatings, and Related CoatingProducts1This standard is issued under the fixed designation D609; the number immediately following the designation indicates t
2、he 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.
3、S. Department of Defense.1. Scope1.1 This practice covers various types of cold rolled steel panels and the procedures to be followed in their preparation fortesting paint, varnish, lacquer, conversion coatings, and related products.1.2 The procedures are as follows:Procedure AConversion coatings (p
4、hosphates, chromates,etc.)Procedure BVapor degreasingProcedure CSolvent brushingProcedure DSolvent wipingProcedure EAlkaline cleaning1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 This standard does not purport to ad
5、dress the safety concerns, if any, associated with its use. It is the responsibility of theuser of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitationsprior to use.1.5 This international standard was developed in accordance with
6、 internationally 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:2A
7、1008/A1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-StrengthLow-Alloy with Improved Formability, Solution Hardened, and Bake HardenableA109/A109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-RolledA366/A366M Specification
8、for Commercial Steel (CS) Sheet, Carbon, (0.15 Maximum Percent) Cold-Rolled (Withdrawn2000)3D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)3. Summary of Practice3.1 Several procedures are described for the preparation and cleaning of the steel test panel
9、s are described as shown in Table1.4. Significance and Use4.1 The procedures described in this practice are designed to provide steel panels with a uniform and reproducible surface fortesting of paint, varnish, lacquer, conversion coatings, and related products.1 This practice is under the jurisdict
10、ion of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.27 on Accelerated Testing.Current edition approved June 1, 2012July 1, 2017. Published July 2012July 2017. Originally approved in 1941. Last previous edition appro
11、ved in 20062012 as D609 00(2006).(2012). DOI: 10.1520/D0609-00R12.10.1520/D0609-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Su
12、mmary 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 changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommen
13、ds 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 official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Test Panels5.1
14、 Prepare the test panels from rust and stain-free cold-rolled steel as described in 5.2, 5.3, 5.4, and Table 1. The panels shallbe made to a size and thickness as agreed upon between the purchaser and seller. Edges shall be smooth and corners rounded. Thesteel may have been coated at the mill with a
15、 suitable rust preventive compound for protection during shipment and storage.However, long-term steel storage with oil on the surface may cause an oil/steel reaction known as oil stain. Since such stains inhibitchemical bonding, the steel selected for panels shall be free of oil stain and other vis
16、ible processing variation caused by picklingor annealing.5.2 Type 1 steel has a matte finish produced by steel mill rolls that have been grit blasted. This finish is typical of cold-rolledsteel used for painted surfaces on automobiles, appliances, etc. Such surfaces can be partially characterized by
17、 measuring theaverage peak-to-valley distance and the number of peaks per unit area. However, conversion coating and paint performance onsuch surfaces may vary because of different oxidation, annealing procedures, and surface conditions.5.3 Type 2 steel panels are flat polished (or “ground”) after t
18、he steel has been received from the mill. Flat polishing is a methodof mechanically grinding the surface with abrasive belts to remove surface contaminants and provide a more uniform andreproducible surface for testing. Flat-polished panels are not representative of the surface on which most coating
19、s are applied,because polishing significantly improves the corrosion resistance performance of coatings by altering the metallurgical nature ofthe steel substrate. To ensure complete removal of surface contaminants, the original surface shall be completely removed asdetermined by visual inspection;
20、in any case, a minimum of 7.5 m (0.3 mils) of surface shall be removed. Care must be used inthe operation of the polishing apparatus and after cleaning the test panel, to ensure complete removal of grit and steel particles fromthe polished surface.5.4 Type 3 steel panels have a smooth finish produce
21、d by steel mill rolls which have been smooth ground. This smooth finishis useful for measuring many paint properties such as color, gloss, flexibility, or adhesion, where it is desirable to minimize theeffects of variation in surface roughness.6. Methods of Preparation6.1 After preparation, the surf
22、ace of the panel should be water-break free, which is determined by immersing a representativepanel momentarily in distilled water. The water should form a continuous unbroken film over the entire surface, without beadingup into droplets or other water-breaks.6.2 Procedure A: Conversion CoatingsConv
23、ersion coatings such as phosphates or chromates are available from a number ofsources as proprietary compounds or processes for application by either spray or immersion. Follow the manufacturers directionsas to the application of the conversion coating. Preparation of test panels may consist of one
24、or more steps of cleaning, rinsing,or conditioning prior to the application of the conversion coating. Additional rinsing with water will usually be required after theconversion coating is applied. To prevent rust, force dry immediately after rinsing.6.3 Procedure B: Vapor DegreasingSuspend the pane
25、ls in a vapor-phase type degreaser containing stabilized 1,1,1-trichloroethane and allow them to remain above the boiling solvent. When the panels attain vapor temperature, condensation ofvapor onto the panels no longer occurs. Prewiping with a clean, lintless cloth saturated with mineral spirits ma
26、y be necessary, sincevapor degreasing generally does not remove solid particulate matter such as dirt, etc. (see Note 1).TABLE 1 Steel PanelsNOTE 1 in. = microinches; nm = nanometer.Type No. Description Thickness, in. (mm) Hardness(Rockwell B) Roughness (Arithmetic Mean), in.(nm) ASTM Specification1
27、 Cold-rolled steel, as rolled(matte)0.024 to 0.038 (0.6 to 1.0) 4075 2565 (7601650) A109/A109M,A366/A366M2 Cold-rolled steel, flat-polishedone side0.024 to 0.038 (0.6 to 1.0) 4075 flat polished to 1550(3801270)A109/A109M,A366/A366M3 Cold-rolled steel, as rolled(smooth)0.010 to 0.024 (0.25 to 0.6) 40
28、75 less than 20 (500) A109/A109M,A366/A366MTABLE 1 Steel PanelsNOTE 1 in. = microinches; nm = nanometer.Type No. Description Thickness, in. (mm) Hardness(Rockwell B) Roughness (Arithmetic Mean), in.(nm) ASTM Specification1 Cold-rolled steel, as rolled(matte)0.024 to 0.038 (0.6 to 1.0) 4075 2565 (760
29、1650) A109/A109M,A1008/A1008M2 Cold-rolled steel, flat-polishedone side0.024 to 0.038 (0.6 to 1.0) 4075 flat polished to 1550(3801270)A109/A109M,A1008/A1008M3 Cold-rolled steel, as rolled(smooth)0.010 to 0.024 (0.25 to 0.6) 4075 less than 20 (500) A109/A109M,A1008/A1008MD609 172NOTE 1Other organic s
30、olvents or combinations of solvents that will produce a water-break free surface may be used if agreed upon between thepurchaser and the supplier.6.4 Procedure C: Solvent BrushingPower-brush scrub the panel with mineral spirits (Specification D235). When all solubleand loosely adhering soil has been
31、 washed off, flush with clean mineral spirits. Dry at a temperature of 52 to 93C (125 to 200F)before use or storage (see Note 1).6.5 Procedure D: Solvent WipingUsing clean, lintless cloth wet with mineral spirits, vigorously rub the panel surface until allsoluble and loosely adhering soil has been r
32、emoved. Flush with clean solvent. Dry at a temperature of 52 to 93C (125 to 200F)before use or storage (see Note 1).6.6 Procedure E: Alkaline CleaningAqueous alkaline cleaners are available from a number of sources as proprietarycompounds or processes. Clean the panels with an alkaline solution or c
33、leaner applied by spray or immersion. Brush or wipe inaccordance with the recommendations of the cleaner manufacturer. One or more steps of rinsing with water will be required afterthis procedure of cleaning. To prevent rust, force dry immediately after rinsing.7. Protection After Preparation7.1 To
34、prevent rust, wrap panels that are not to be used immediately after preparation, in a paper impregnated withdicyclohexylammonium nitrite, or an equivalent volatile corrosion inhibitor (VCI), and place in a plastic bag or envelope.7.1.1 Bare steel panels used after prolonged storage in VCI paper may
35、have a residue of VCI that may affect some kinds of tests.The VCI residue can generally be removed by wiping the panel several times with a clean, lint-free cloth wetted with warmdistilled water.3 ItsIts important to dry the panel thoroughly immediately after wiping to prevent flash rust. For critic
36、al tests, theoperator can verify the presence and effect of VCI residue by testing a representative paint on both a panel wiped with water andon a panel straight out of the VCI wrap. Wiping with water is not recommended for phosphated panels, because of the difficultyof removing water from the phosp
37、hate coating.7.2 To avoid contamination from fingerprints, do not touch the surface of the panels after preparation. Its preferable that thepanels be handled only with clean, lint-free gloves. Handle the panels only by the edges, even if wearing gloves.8. Keywords8.1 panels; sheet metal; steel panel
38、s; substrate-coatings applicationASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof
39、 infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this st
40、andard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your
41、 views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by cont
42、acting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ The last approved version of this historical standard is referenced on www.astm.org.3 Skerry, B., “Prewashing Commercially Supplied Cold-Rolled Steel Test Panels and Its Effect on Coating Adhesion,” Journal of Coatings Technology, Vol 62, No. 788,September 1990, pp. 5558.D609 173
