ASTM D4585 PDF

ASTM D4585 PDF

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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If you feel that your comments have not received a fair hearing you should r4585 your views known to the ASTM Committee on Standards, at the address shown below. Remove only as many specimens as can be rated within the speci? The specimens should be mounted to avoid gaps between specimens that allow heat and moisture to escape.

The test is therefore useful for evaluating coatings alone or complete coating systems.

Approved June 1, Originally approved asfm Materials thicker than 8 mm 3? Maximum thickness is 8 mm 3? If the specimens cannot completely? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Such control specimens can provide warning of changes in test severity ashm a given apparatus, and can indicate variations in test severity between different apparatuses.

Current edition approved June 1, Certain substrates may deform from the heat and moisture.

Cleveland Condensing Type Cabinet

A coating system is considered to pass if there is no evidence of water-related failure after a speci? If the test atm overshadow the upper shelf, do not put test panels on the upper shelf.

The specimens form d45855 roof or walls of the test atsm so that the back sides of the specimens are exposed to the cooling effects of room temperature air. It does not specify specimen preparation, speci? Locate the chamber away from air vents and direct drafts. Link to Active This link will always route to the current Active version of the standard. Vents, approximately 3 to 5 mm 0. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part aatm the standard.

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Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time.

The test is therefore useful for evaluating coatings alone or complete dd4585 systems. This practice is derived from research of the Cleveland Society for Coatings Technology.

Minimum size is mm 3-in. The removal of specimens for inspections during operation is permitted. Drying periods should be at least 4 h long.

Rate specimens for changes in color, blistering, etc. Practice G 53 has d4855 replaced by Practice G Work Item s – proposed revisions of this standard.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens.

Evaluate specimens no less than 5 min and no more than 10 min after removal from test, as d4855 effects from water exposure can change within a short time. Last previous edition approved in as D — The post-recovery rating d585 evaluation of the permanent effects of the exposure as distinct from the transient effects, and is especially important for evaluation of color and gloss.

This practice is derived from research of the Cleveland Society for Coatings Technology. Coated wood specimens may be mounted in the same way.

ASTM International – Standard References for ASTM D / DM – 18

The values given in parentheses are for information only. Mount coated metal panels with the coating to be tested facing the inside of the chamber. Users of aztm 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. Condensate usually seals cracks or holes smaller than 1 mm 0. Other temperatures may be used provided that the temperature is reported in conformance with Section 8.

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These tests usually result in a pass or fail determination but the degree of failure also may be measured. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. For manual drying of specimens, remove them from the asmt. It does not specify specimen preparation, specific test conditions, or evaluation of results.

Practices D cover application techniques for the production of uniform? Condensation is produced by exposing one surface of a coated specimen to a heated, saturated mixture of air and water vapor, while the reverse side of the specimen is exposed to the cooling effect of room temperature air.

These tests usually result in a pass or d45855 determination but the degree of failure also may be measured. Various types of tape can be used to seal the gaps that develop when the specimen deforms.

The water quality should be agreed upon between the customer and the supplier for running this test. NOTE 4—A 3 mm glass plate in place of a sample will work to monitor whether condensation is occurring.

ASTM D 控制冷凝法对涂层耐水性试验方法_百度文库

Condensation is produced by exposing one surface of a coated specimen to a heated, saturated mixture aetm air and water vapor, while the reverse side of the specimen is exposed to the cooling effect of room temperature air. Do not leave the specimens in the apparatus at the conclusion of the test as the specimens can remain wet for hours, or even days, when the apparatus is turned off.

Failure in a condensation test may be caused by a number of factors including a de? Summary of Practice 3.