ASTM D/DM: Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation. Designation: D – 07 Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation1 This standard is issued. ASTM D/DM Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation. standard by ASTM.
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Summary of Practice 3. The values given in parentheses ast, for information only. When removing a specimen for inspection, replace it with a blank so that the test conditions are not altered. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Axtm specimens should be mounted to avoid gaps between specimens that allow heat and moisture to escape. Approved June 1, Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
The test is therefore useful for evaluating coatings alone or complete coating systems. A recovery period from 12 to 24 h is generally sufficient.
The specimens form the roof r4585 walls of the test chamber so that the back sides of the specimens are exposed to the cooling effects of room temperature air. NOTE 4—A 3 mm glass plate in place of a sample will work to monitor whether condensation is occurring.
The removal of specimens for inspections during operation is permitted. Remove only as many specimens as can be rated within the speci? Other temperatures may be used provided that the temperature is reported in conformance with Section 8. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Last previous edition approved in as D — Coated wood specimens may be mounted in the same way. Satm the specimens cannot completely? The post-recovery rating allows evaluation of the permanent effects of the exposure as distinct from the transient effects, and is especially important for evaluation of color and gloss.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. For manual drying of specimens, remove them from the apparatus. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. This v4585 is derived from research of the Cleveland Society for Coatings Technology.
Cleveland Condensing Type Cabinet
Automatic drying requires the apparatus described in 5. The quality of the water in the pan does not affect the test since the evaporation and condensation process yields distilled water, but the use of tap water can result in the accumulation of residues in the water pan.
The resulting heat transfer causes vapor to condense on the test specimens as liquid water saturated with air. Check the samples periodically to make sure condensation is occurring.
Link to Active This link will always route to the current Active version of the standard. Such control specimens can provide warning of changes in test severity in a given apparatus, and can indicate variations in test severity between different apparatuses.
The water quality should be agreed upon between the customer and the supplier for running this test. Maximum thickness is 8 mm 3?
Certain substrates may deform from the heat and moisture. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens.
Originally approved in It does not specify specimen preparation, speci? Evaluate specimens no less than 5 min and no more than 10 min after removal from test, as the effects from water exposure can change within a short c4585. A number in parentheses indicates the year of last reapproval.
ASTM International – Standard References for ASTM D / DM – 18
These tests usually result in a pass or fail determination but the degree of failure also may be measured. It is the responsibility of the user of this standard to establish appropriate safety, health, and 4d585 practices and determine the applicability of regulatory limitations prior to use. These tests usually result in a pass or fail determination but the degree of failure also may be measured.
Current edition approved June 1, Locate the chamber away from air vents and direct drafts. Historical Version s – view previous versions ashm standard. X4585 standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Failure in a condensation test may be caused by a number of factors including a de?
The substrate composition and surface preparation, specimen preparation, and the number of specimens should be agreed upon prior to testing. Practice G 53 has been replaced by Practice G Materials thicker than 8 mm 3?