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Significance and Use
3.1 The amount of rusting beneath or through a paint film is a significant factor in determining whether a coating system should be repaired or replaced. This practice provides a standardized means for quantifying the amount and distribution of visible surface rust.
1.1 This practice covers the evaluation of the degree of rusting on painted steel surfaces. The visual examples which depict the percentage of rusting given in the written specifications form part of the standard. In the event of a dispute, the written definition prevails. These visual examples were developed in cooperation with SSPC: The Society for Protective Coatings to further standardization of methods. The photographs can be used to estimate the percentage of other coating defects on various substrates. This standard does not include evaluation of rust propagation around an initially prepared scribe, score, or holiday.
ICS Number Code 87.020 (Paint coating processes)
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ASTM D610-08(2012), Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top