1、Designation: D 610 07Society for Protective CoatingsSSPC-VIS-2Standard Test Method forEvaluating Degree of Rusting on Painted Steel Surfaces1This standard is issued under the fixed designation D 610; the number immediately following the designation indicates the year oforiginal adoption or, in the c
2、ase of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. Scope1.1 This te
3、st method covers the evaluation of the degree ofrusting on painted steel surfaces. The visual examples whichdepict the percentage of rusting given in the written specifica-tions form part of the standard. In the event of a dispute, thewritten definition prevails. These visual examples were devel-ope
4、d in cooperation with SSPC: The Society for ProtectiveCoatings to further standardization of methods. The photo-graphs can be used to estimate the percentage of other coatingdefects on various substrates. This standard does not includeevaluation of rust propagation around an initially preparedscribe
5、, score, or holiday.1.2 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
6、 use.2. Referenced Documents2.1 ASTM Adjunct/SSPC: The Society for Protective Coat-ings:SSPC-VIS 2/ASTM D 610 Standard Method of EvaluatingDegrees of Rusting on Painted Steel Surfaces23. Significance and Use3.1 The amount of rusting beneath or through a paint film isa significant factor in determini
7、ng whether a coating systemshould be repaired or replaced. This test method provides astandardized means for quantifying the amount and distributionof visible surface rust.3.2 The degree of rusting is evaluated using a zero to tenscale based on the percentage of visible surface rust.3.3 The distribu
8、tion of the rust is classified as spot rust,general rust, pinpoint rust or hybrid rust.4. Interferences4.1 The visual examples that are part of this test method andthe associated rust-grade scale cover only rusting evidenced byvisible surface rust.4.2 The use of the visual examples requires the foll
9、owingcautions:4.2.1 Some finishes are stained by rust. This staining mustnot be confused with the actual rusting involved.4.2.2 Accumulated dirt or other material may make accuratedetermination of the degree of rusting difficult.4.2.3 Certain types of deposited dirt that contain iron or ironcompound
10、s may cause surface discoloration that should not bemistaken for corrosion.4.2.4 Failure may vary over a given area. Discretion musttherefore be used when selecting a single rust grade or rustdistribution that is to be representative of a large area orstructure, or in subdividing a structure for eva
11、luation.4.2.5 The color of the finish coating should be taken intoaccount in evaluating surfaces as failures will be more apparenton a finish that shows color contrast with rust, such as used inthese reference standards, than on a similar color, such as aniron oxide finish.5. Procedure5.1 Select an
12、area to be evaluated.5.2 Determine the type of rust distribution using definitionsin Table 1 and visual examples in Fig. 1, Fig. 2, and Fig. 3.5.3 Estimate percentage of surface area rusted using thevisual examples in Fig. 1, Fig. 2, and Fig. 3 or SSPC-VIS 2,orboth, by electronic scanning techniques
13、 or other method agreedupon by contracting parties.5.4 Do not consider flow of corrosion products onto thesurface of intact coating (that is, “rust bleed” or staining) aspart of the surface area rust. It may be helpful to wipe thesurface with a damp cloth to remove the rust bleed beforeevaluating.1T
14、his test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.46 on Industrial Protective Coatings.This test method has been jointly approved by ASTM and SSPC: The Society forProtective Co
15、atings.Current edition approved July 1, 2007. Published July 2007. Originally approvedin 1941. Last previous edition approved in 2001 as D 610 01.2Colored visual examples are available at a nominal cost from ASTM Interna-tional Headquarters (request Adjunct ADJD0610A), SSPC Publication No. 00-08from
16、 The Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, Pittsburgh,PA 15222-4656, http:/www.sspc.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.5 Use percentage of surface area rusted to identify rustgrade (see Ta
17、ble 1). Assign rust rating using rust grade of 0-10followed by the type of rust distribution identified by S forspot, G for general, P for pinpoint or H for Hybrid.NOTE 1The numerical rust grade scale is an exponential function ofthe area of rust. Plotting the rust grade versus area of rust results
18、in astraight line in semilogarithmic coordinates. The slope of the line changesat 10 % of the area rusted to allow it to resolve differences below 10 %across rust grades from 10 to 4 while including 10 to 100 % in rust grades3 through 0.5.6 The visual examples are not required for use of therust-gra
19、de scale since the scale is based upon the percent of thearea rusted and any method of assessing area rust may be usedto determine the rust grade.6. Report6.1 Identify sample or area evaluated.6.2 Report rust grade using rating of 0-10.6.3 Report rust distribution using S for Spot, G for General,P f
20、or Pinpoint and H for Hybrid.7. Precision and Bias7.1 No precision or bias statement can be made for this testmethod.8. Keywords8.1 corrosion; rustingTABLE 1 Scale and Description of Rust RatingsVisual ExamplesRust Grade Percent of Surface Rusted Spot(s) General (G) Pinpoint (P)10 Less than or equal
21、 to 0.01 percent None9 Greater than 0.01 percent and up to 0.03 percent 9S 9G 9P8 Greater than 0.03 percent and up to 0.1 percent 8S 8G 8P7 Greater than 0.1 percent and up to 0.3 percent 7S 7G 7P6 Greater than 0.3 percent and up to 1.0 percent 6S 6G 6P5 Greater than 1.0 percent and up to 3.0 percent
22、 5S 5G 5P4 Greater than 3.0 percent and up to 10.0 percent 4S 4G 4P3 Greater than 10.0 percent and up to 16.0 percent 3S 3G 3P2 Greater than 16.0 percent and up to 33.0 percent 2S 2G 2P1 Greater than 33.0 percent and up to 50.0 percent 1S 1G 1P0 Greater than 50 percent NoneRust Distribution Types:S:
23、 Spot RustingSpot rusting occurs when the bulk of the rusting is concentrated in a few localized areas of the painted surface. The visual examples depicting thistype of rusting are labeled 9-S through 1-S (See Fig. 1, Fig. 2, and Fig. 3).G: General RustingGeneral rusting occurs when various size rus
24、t spots are randomly distributed across the surface. The visual examples depicting this type of rustingare labeled 9-G through 1-G. (See Fig. 1, Fig. 2, and Fig. 3).P: Pinpoint RustingPinpoint rusting occurs when the rust is distributed across the surface as very small individual specks of rust. The
25、 visual examples depicting thistype of rusting are labeled 9-P through 1-P. (See Fig. 1, Fig. 2, and Fig. 3).H: Hybrid RustingAn actual rusting surface may be a hybrid of the types of rust distribution depicted in the visual examples. In this case, report the total percent ofrust to classify the sur
26、face. 9-H through 1-H.D610072FIG. 1 Examples of Area PercentagesD610073FIG. 2 Examples of Area PercentagesD610074FIG. 3 Examples of Area PercentagesD610075ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.
27、 Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof 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 e
28、very five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible tec
29、hnical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your 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 contacting 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).D610076
