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Full Description

1.1 This practice covers the basic principles and operating procedures for testing water resistance of coatings by exposing coated specimens in an atmosphere maintained at 100 % relative humidity so that condensation forms on all surfaces of test specimens.

1.2 This practice uses the technique of creating a slight temperature differential within the exposure area to form condensation on the coated specimens. As the warmer saturated air passes the cooler specimens, water is deposited onto the specimens in the form of condensation.

1.3 This practice places the entire specimen in the exposure area allowing condensation to form on all surfaces. This makes this practice suitable for flat panels as well as large or 3D objects. This practice differs from other methods where condensation is only formed on the front coating surface, while the back surface is outside the exposure area. Other tests may also deposit water droplets on the surface but where the source is not from condensation (for example, water spray).

Note 1: Alternative practices for testing the water resistance of coatings include Practices D870, D1735, and D4585.

1.4 This practice is limited to the methods of obtaining, measuring, and controlling the conditions and procedures of tests conducted in 100 % relative humidity. It does not specify specimen preparation, or evaluation of results.

1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 

Document History

  1. ASTM D2247-15(2020)

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    Standard Practice for Testing Water Resistance of Coatings in 100 % Relative Humidity

    • Most Recent
  2. ASTM D2247-15


    Standard Practice for Testing Water Resistance of Coatings in 100 % Relative Humidity

    • Historical Version
  3. ASTM D2247-11


    Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity

    • Historical Version
  4. ASTM D2247-10


    Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity

    • Historical Version
  5. ASTM D2247-02


    Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity

    • Historical Version
  6. ASTM D2247-99


    Standard Practice for Testing Water Resistance of Coatings in 100% Relative Humidity

    • Historical Version