ASTM D610-01 pdf free.Standard Test Method for Evaluating Degree of Rusting on Painted Steel Surfaces.
This test 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-oped in cooperation with SSPC: The Society for ProtectiveCoatings to further standardization of methods.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 appropriate safety and health practices and determine the applica-bility of regulatory limitations prior to use.
ASTM Adjunct/SSPC: The Society for Protective Coatings
ssPC-VIS 2/ASTM D 610 Standard Method of EvaluatingDegrees of Rusting on Painted Steel Surfaces2
The amount of rusting beneath or through a paint film isa significant factor in determining whether a coating systemshould be repaired or replaced. This test method provides astandardized means for quantifying the amount and distributionof visible surface rust.The degree of rusting is evaluated using a zero to tenscale based on the percentage of visible surface rust.The visual examples that are part of this test method andthe associated rust-grade scale cover only rusting evidenced byvisible surface rust.
The use of the visual examples requires the followingcautions:
Some finishes are stained by rust.This staining mustnot be confused with the actual rusting involved.
Accumulated dirt or other material may make accuratedetermination of the degree of rusting difficult.
Certain types of deposited dirt that contain iron or ironcompounds may cause surface discoloration that should not bemistaken for corrosion.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 evaluation.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.ASTM D610 pdf download.