Astm D 610
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ScribdTranslationsASTM - D 610 - 2001 (Translation)
Standard method for assessing the percentage of rusting on Steel Surfaces
Painted
This standard is issued under the fixed designation D 610; the number following the designation indicates in this case,
the review or the year of last revision. A number in parentheses indicates the year of the last revision. A
‘upsilon’s overwritten( Indicates an editorial change since the last review or re-approval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This testing method determines the degree of rusting on painted steel, against visual standards. This
The visual standard was developed in cooperation with the Steel Structure Painting Council (SSPC).
for standardization of methods.
1.2 This standard does not provide total security, as it relies on the user's personal assessment. It is
user responsibility for evaluating the inspected area in order to safely establish the
percentage of rusting.
2. Reference Documents
2.1 ASTM / SSPC Supplements: Protective Coatings Society
SSPC-VIS 2 / ASTM D 610 Standard method for evaluating the percentage of rust on surfaces
Painted Steel
3. Definitions and Use
The amount of rust beneath the paint film is a significant factor in determining which
The painting system must be used in the repair. This testing method provides means to quantify the
rust present on the surface of painted steel.
3.2 The degree of rusting is evaluated on a scale of 0% to 10%, the assessment is made
visually.
3.3 The type of rusting progression is classified as: `spot rust` - localized rust,
generalized rust
4. Interferences
4.1 The reference photographic standard is part of this test method, to be considered when evaluating the area of
penetration of rust (film with blistering)
4.2 The use of the standard photographic reference requires the following precautions:
4.2.1 Some points are stained by rust. These stains should not be confused with the current.
involved rusting.
4.2.2 Accumulated dirt or other foreign material can cause inaccuracies in the determination of the degree of
rusting.
Certain types of impurities may contain iron or iron compounds causing discoloration of the
painted surface confused with the evaluation.
4.2.4 Caution when assessing a very large area, as the risk of error is high.
4.2.5 Consider the color of the paint layer in order to avoid errors in assessment, colors similar to the color
rust can lead to errors.
5. Procedure
5.1 Compare the surface visually with the reference photographic standards, determine the percentage.
of the rusty area.
5.2 The reference photographic standard is not required for use in assessing the degree of rust.
used for percentage assessment.
6. Report
6.1 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 for Pinpoint and H for Hybrid.
7. Precision
7.1 No precision or statement of bias can be constituted by this testing method.
8. Keyword
Corrosion; rust
Table 1 Assessment and Description of Ferruginous Grades:
Note 1 - Initial SSPC Surface Conditions are described E, F, G, and H in 'Systems and Specifications'.
Surface Preparation Comment, 'Vol 2 of Structural Steel Manual Painting, 6th Edition, 1991.
Degrees of Visual Examples
CorrosionA Percentage of Rusty Surface Spot(S) General(G) Pinpoint(P)
10 No rust or less than 0.01% of rusted surface None
9 From 0.01 to 0.03% of rusted surface 9-S 9-G 9-P
8 From 0.03 to 0.1% of rusted surface 8-S 8-G 8-P
7 From 0.1 to 0.3% of the rusted surface 7-S 7-G 7-P
6 From 0.3 to 1% of rusted surface 6-S 6-G 6-P
5 From 1 to 3% of rusted surface 5-S 5-G 5-P
4 From 3 to 10% of rusted surface 4-S 4-G 4-P
3 From 10 to 16% of rusted surface 3-S 3-G 3-P
2 From 16 to 33% of rusted surface 2-S 2-G 2-P
1 From 33 to 50% rusted surface 1-S 1-G 1-P
0 Above 50% of rusty surface None
This standard is subject to review by the responsible technical committee at any time and must be reviewed every
five years and if not reviewed, re-approved or withdrawn.